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hardware_interfaces/security/keymint/aidl/vts/functional/KeyMintTest.cpp
Shawn Willden d659c7c181 Add performOperation stub. 
Test: VtsAidlKeyMintTargetTest
Change-Id: I3689fd2993941343c6b9ba503fbe56153742fb3e
2021-03-01 09:29:39 -07:00

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/*
* Copyright (C) 2020 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#define LOG_TAG "keymint_1_test"
#include <cutils/log.h>
#include <signal.h>
#include <iostream>
#include <openssl/ec.h>
#include <openssl/evp.h>
#include <openssl/mem.h>
#include <openssl/x509v3.h>
#include <cutils/properties.h>
#include <aidl/android/hardware/security/keymint/KeyFormat.h>
#include <keymint_support/key_param_output.h>
#include <keymint_support/openssl_utils.h>
#include "KeyMintAidlTestBase.h"
using aidl::android::hardware::security::keymint::AuthorizationSet;
using aidl::android::hardware::security::keymint::KeyCharacteristics;
using aidl::android::hardware::security::keymint::KeyFormat;
namespace std {
using namespace aidl::android::hardware::security::keymint;
template <>
struct std::equal_to<KeyCharacteristics> {
bool operator()(const KeyCharacteristics& a, const KeyCharacteristics& b) const {
if (a.securityLevel != b.securityLevel) return false;
// this isn't very efficient. Oh, well.
AuthorizationSet a_auths(a.authorizations);
AuthorizationSet b_auths(b.authorizations);
a_auths.Sort();
b_auths.Sort();
return a_auths == b_auths;
}
};
} // namespace std
namespace aidl::android::hardware::security::keymint::test {
namespace {
template <TagType tag_type, Tag tag, typename ValueT>
bool contains(const vector<KeyParameter>& set, TypedTag<tag_type, tag> ttag,
ValueT expected_value) {
auto it = std::find_if(set.begin(), set.end(), [&](const KeyParameter& param) {
if (auto p = authorizationValue(ttag, param)) {
return *p == expected_value;
}
return false;
});
return (it != set.end());
}
template <TagType tag_type, Tag tag>
bool contains(const vector<KeyParameter>& set, TypedTag<tag_type, tag>) {
auto it = std::find_if(set.begin(), set.end(),
[&](const KeyParameter& param) { return param.tag == tag; });
return (it != set.end());
}
constexpr char hex_value[256] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 0, 0, 0, 0, 0, // '0'..'9'
0, 10, 11, 12, 13, 14, 15, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 'A'..'F'
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //
0, 10, 11, 12, 13, 14, 15, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 'a'..'f'
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
string hex2str(string a) {
string b;
size_t num = a.size() / 2;
b.resize(num);
for (size_t i = 0; i < num; i++) {
b[i] = (hex_value[a[i * 2] & 0xFF] << 4) + (hex_value[a[i * 2 + 1] & 0xFF]);
}
return b;
}
string rsa_key =
hex2str("30820275020100300d06092a864886f70d01010105000482025f3082025b"
"02010002818100c6095409047d8634812d5a218176e45c41d60a75b13901"
"f234226cffe776521c5a77b9e389417b71c0b6a44d13afe4e4a2805d46c9"
"da2935adb1ff0c1f24ea06e62b20d776430a4d435157233c6f916783c30e"
"310fcbd89b85c2d56771169785ac12bca244abda72bfb19fc44d27c81e1d"
"92de284f4061edfd99280745ea6d2502030100010281801be0f04d9cae37"
"18691f035338308e91564b55899ffb5084d2460e6630257e05b3ceab0297"
"2dfabcd6ce5f6ee2589eb67911ed0fac16e43a444b8c861e544a05933657"
"72f8baf6b22fc9e3c5f1024b063ac080a7b2234cf8aee8f6c47bbf4fd3ac"
"e7240290bef16c0b3f7f3cdd64ce3ab5912cf6e32f39ab188358afcccd80"
"81024100e4b49ef50f765d3b24dde01aceaaf130f2c76670a91a61ae08af"
"497b4a82be6dee8fcdd5e3f7ba1cfb1f0c926b88f88c92bfab137fba2285"
"227b83c342ff7c55024100ddabb5839c4c7f6bf3d4183231f005b31aa58a"
"ffdda5c79e4cce217f6bc930dbe563d480706c24e9ebfcab28a6cdefd324"
"b77e1bf7251b709092c24ff501fd91024023d4340eda3445d8cd26c14411"
"da6fdca63c1ccd4b80a98ad52b78cc8ad8beb2842c1d280405bc2f6c1bea"
"214a1d742ab996b35b63a82a5e470fa88dbf823cdd02401b7b57449ad30d"
"1518249a5f56bb98294d4b6ac12ffc86940497a5a5837a6cf946262b4945"
"26d328c11e1126380fde04c24f916dec250892db09a6d77cdba351024077"
"62cd8f4d050da56bd591adb515d24d7ccd32cca0d05f866d583514bd7324"
"d5f33645e8ed8b4a1cb3cc4a1d67987399f2a09f5b3fb68c88d5e5d90ac3"
"3492d6");
string ec_256_key =
hex2str("308187020100301306072a8648ce3d020106082a8648ce3d030107046d30"
"6b0201010420737c2ecd7b8d1940bf2930aa9b4ed3ff941eed09366bc032"
"99986481f3a4d859a14403420004bf85d7720d07c25461683bc648b4778a"
"9a14dd8a024e3bdd8c7ddd9ab2b528bbc7aa1b51f14ebbbb0bd0ce21bcc4"
"1c6eb00083cf3376d11fd44949e0b2183bfe");
string ec_521_key =
hex2str("3081EE020100301006072A8648CE3D020106052B810400230481D63081D3"
"02010104420011458C586DB5DAA92AFAB03F4FE46AA9D9C3CE9A9B7A006A"
"8384BEC4C78E8E9D18D7D08B5BCFA0E53C75B064AD51C449BAE0258D54B9"
"4B1E885DED08ED4FB25CE9A1818903818600040149EC11C6DF0FA122C6A9"
"AFD9754A4FA9513A627CA329E349535A5629875A8ADFBE27DCB932C05198"
"6377108D054C28C6F39B6F2C9AF81802F9F326B842FF2E5F3C00AB7635CF"
"B36157FC0882D574A10D839C1A0C049DC5E0D775E2EE50671A208431BB45"
"E78E70BEFE930DB34818EE4D5C26259F5C6B8E28A652950F9F88D7B4B2C9"
"D9");
string ec_256_key_rfc5915 =
hex2str("308193020100301306072a8648ce3d020106082a8648ce3d030107047930"
"770201010420782370a8c8ce5537baadd04dcff079c8158cfa9c67b818b3"
"8e8d21c9fa750c1da00a06082a8648ce3d030107a14403420004e2cc561e"
"e701da0ad0ef0d176bb0c919d42e79c393fdc1bd6c4010d85cf2cf8e68c9"
"05464666f98dad4f01573ba81078b3428570a439ba3229fbc026c550682f");
string ec_256_key_sec1 =
hex2str("308187020100301306072a8648ce3d020106082a8648ce3d030107046d30"
"6b0201010420782370a8c8ce5537baadd04dcff079c8158cfa9c67b818b3"
"8e8d21c9fa750c1da14403420004e2cc561ee701da0ad0ef0d176bb0c919"
"d42e79c393fdc1bd6c4010d85cf2cf8e68c905464666f98dad4f01573ba8"
"1078b3428570a439ba3229fbc026c550682f");
struct RSA_Delete {
void operator()(RSA* p) { RSA_free(p); }
};
std::string make_string(const uint8_t* data, size_t length) {
return std::string(reinterpret_cast<const char*>(data), length);
}
template <size_t N>
std::string make_string(const uint8_t (&a)[N]) {
return make_string(a, N);
}
class AidlBuf : public vector<uint8_t> {
typedef vector<uint8_t> super;
public:
AidlBuf() {}
AidlBuf(const super& other) : super(other) {}
AidlBuf(super&& other) : super(std::move(other)) {}
explicit AidlBuf(const std::string& other) : AidlBuf() { *this = other; }
AidlBuf& operator=(const super& other) {
super::operator=(other);
return *this;
}
AidlBuf& operator=(super&& other) {
super::operator=(std::move(other));
return *this;
}
AidlBuf& operator=(const string& other) {
resize(other.size());
for (size_t i = 0; i < other.size(); ++i) {
(*this)[i] = static_cast<uint8_t>(other[i]);
}
return *this;
}
string to_string() const { return string(reinterpret_cast<const char*>(data()), size()); }
};
} // namespace
class NewKeyGenerationTest : public KeyMintAidlTestBase {
protected:
void CheckBaseParams(const vector<KeyCharacteristics>& keyCharacteristics) {
// TODO(swillden): Distinguish which params should be in which auth list.
AuthorizationSet auths;
for (auto& entry : keyCharacteristics) {
auths.push_back(AuthorizationSet(entry.authorizations));
}
EXPECT_TRUE(auths.Contains(TAG_ORIGIN, KeyOrigin::GENERATED));
EXPECT_TRUE(auths.Contains(TAG_PURPOSE, KeyPurpose::SIGN));
EXPECT_TRUE(auths.Contains(TAG_PURPOSE, KeyPurpose::VERIFY));
// Verify that App data and ROT are NOT included.
EXPECT_FALSE(auths.Contains(TAG_ROOT_OF_TRUST));
EXPECT_FALSE(auths.Contains(TAG_APPLICATION_DATA));
// Check that some unexpected tags/values are NOT present.
EXPECT_FALSE(auths.Contains(TAG_PURPOSE, KeyPurpose::ENCRYPT));
EXPECT_FALSE(auths.Contains(TAG_PURPOSE, KeyPurpose::DECRYPT));
EXPECT_FALSE(auths.Contains(TAG_AUTH_TIMEOUT, 301U));
auto os_ver = auths.GetTagValue(TAG_OS_VERSION);
ASSERT_TRUE(os_ver);
EXPECT_EQ(*os_ver, os_version());
auto os_pl = auths.GetTagValue(TAG_OS_PATCHLEVEL);
ASSERT_TRUE(os_pl);
EXPECT_EQ(*os_pl, os_patch_level());
}
};
/*
* NewKeyGenerationTest.Rsa
*
* Verifies that keymint can generate all required RSA key sizes, and that the resulting keys
* have correct characteristics.
*/
TEST_P(NewKeyGenerationTest, Rsa) {
for (auto key_size : ValidKeySizes(Algorithm::RSA)) {
vector<uint8_t> key_blob;
vector<KeyCharacteristics> key_characteristics;
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.RsaSigningKey(key_size, 65537)
.Digest(Digest::NONE)
.Padding(PaddingMode::NONE)
.SetDefaultValidity(),
&key_blob, &key_characteristics));
ASSERT_GT(key_blob.size(), 0U);
CheckBaseParams(key_characteristics);
AuthorizationSet crypto_params = SecLevelAuthorizations(key_characteristics);
EXPECT_TRUE(crypto_params.Contains(TAG_ALGORITHM, Algorithm::RSA));
EXPECT_TRUE(crypto_params.Contains(TAG_KEY_SIZE, key_size))
<< "Key size " << key_size << "missing";
EXPECT_TRUE(crypto_params.Contains(TAG_RSA_PUBLIC_EXPONENT, 65537U));
CheckedDeleteKey(&key_blob);
}
}
/*
* NewKeyGenerationTest.RsaWithAttestation
*
* Verifies that keymint can generate all required RSA key sizes, and that the resulting keys
* have correct characteristics.
*/
TEST_P(NewKeyGenerationTest, RsaWithAttestation) {
for (auto key_size : ValidKeySizes(Algorithm::RSA)) {
auto challenge = "hello";
auto app_id = "foo";
vector<uint8_t> key_blob;
vector<KeyCharacteristics> key_characteristics;
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.RsaSigningKey(key_size, 65537)
.Digest(Digest::NONE)
.Padding(PaddingMode::NONE)
.AttestationChallenge(challenge)
.AttestationApplicationId(app_id)
.Authorization(TAG_NO_AUTH_REQUIRED)
.SetDefaultValidity(),
&key_blob, &key_characteristics));
ASSERT_GT(key_blob.size(), 0U);
CheckBaseParams(key_characteristics);
AuthorizationSet crypto_params = SecLevelAuthorizations(key_characteristics);
EXPECT_TRUE(crypto_params.Contains(TAG_ALGORITHM, Algorithm::RSA));
EXPECT_TRUE(crypto_params.Contains(TAG_KEY_SIZE, key_size))
<< "Key size " << key_size << "missing";
EXPECT_TRUE(crypto_params.Contains(TAG_RSA_PUBLIC_EXPONENT, 65537U));
EXPECT_TRUE(ChainSignaturesAreValid(cert_chain_));
ASSERT_GT(cert_chain_.size(), 0);
AuthorizationSet hw_enforced = HwEnforcedAuthorizations(key_characteristics);
AuthorizationSet sw_enforced = SwEnforcedAuthorizations(key_characteristics);
EXPECT_TRUE(verify_attestation_record(challenge, app_id, //
sw_enforced, hw_enforced, SecLevel(),
cert_chain_[0].encodedCertificate));
CheckedDeleteKey(&key_blob);
}
}
/*
* NewKeyGenerationTest.LimitedUsageRsa
*
* Verifies that KeyMint can generate all required RSA key sizes with limited usage, and that the
* resulting keys have correct characteristics.
*/
TEST_P(NewKeyGenerationTest, LimitedUsageRsa) {
for (auto key_size : ValidKeySizes(Algorithm::RSA)) {
vector<uint8_t> key_blob;
vector<KeyCharacteristics> key_characteristics;
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.RsaSigningKey(key_size, 65537)
.Digest(Digest::NONE)
.Padding(PaddingMode::NONE)
.Authorization(TAG_USAGE_COUNT_LIMIT, 1)
.SetDefaultValidity(),
&key_blob, &key_characteristics));
ASSERT_GT(key_blob.size(), 0U);
CheckBaseParams(key_characteristics);
AuthorizationSet crypto_params = SecLevelAuthorizations(key_characteristics);
EXPECT_TRUE(crypto_params.Contains(TAG_ALGORITHM, Algorithm::RSA));
EXPECT_TRUE(crypto_params.Contains(TAG_KEY_SIZE, key_size))
<< "Key size " << key_size << "missing";
EXPECT_TRUE(crypto_params.Contains(TAG_RSA_PUBLIC_EXPONENT, 65537U));
// Check the usage count limit tag appears in the authorizations.
AuthorizationSet auths;
for (auto& entry : key_characteristics) {
auths.push_back(AuthorizationSet(entry.authorizations));
}
EXPECT_TRUE(auths.Contains(TAG_USAGE_COUNT_LIMIT, 1U))
<< "key usage count limit " << 1U << " missing";
CheckedDeleteKey(&key_blob);
}
}
/*
* NewKeyGenerationTest.LimitedUsageRsaWithAttestation
*
* Verifies that KeyMint can generate all required RSA key sizes with limited usage, and that the
* resulting keys have correct characteristics and attestation.
*/
TEST_P(NewKeyGenerationTest, LimitedUsageRsaWithAttestation) {
for (auto key_size : ValidKeySizes(Algorithm::RSA)) {
auto challenge = "hello";
auto app_id = "foo";
vector<uint8_t> key_blob;
vector<KeyCharacteristics> key_characteristics;
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.RsaSigningKey(key_size, 65537)
.Digest(Digest::NONE)
.Padding(PaddingMode::NONE)
.AttestationChallenge(challenge)
.AttestationApplicationId(app_id)
.Authorization(TAG_NO_AUTH_REQUIRED)
.Authorization(TAG_USAGE_COUNT_LIMIT, 1)
.SetDefaultValidity(),
&key_blob, &key_characteristics));
ASSERT_GT(key_blob.size(), 0U);
CheckBaseParams(key_characteristics);
AuthorizationSet crypto_params = SecLevelAuthorizations(key_characteristics);
EXPECT_TRUE(crypto_params.Contains(TAG_ALGORITHM, Algorithm::RSA));
EXPECT_TRUE(crypto_params.Contains(TAG_KEY_SIZE, key_size))
<< "Key size " << key_size << "missing";
EXPECT_TRUE(crypto_params.Contains(TAG_RSA_PUBLIC_EXPONENT, 65537U));
// Check the usage count limit tag appears in the authorizations.
AuthorizationSet auths;
for (auto& entry : key_characteristics) {
auths.push_back(AuthorizationSet(entry.authorizations));
}
EXPECT_TRUE(auths.Contains(TAG_USAGE_COUNT_LIMIT, 1U))
<< "key usage count limit " << 1U << " missing";
// Check the usage count limit tag also appears in the attestation.
EXPECT_TRUE(ChainSignaturesAreValid(cert_chain_));
ASSERT_GT(cert_chain_.size(), 0);
AuthorizationSet hw_enforced = HwEnforcedAuthorizations(key_characteristics);
AuthorizationSet sw_enforced = SwEnforcedAuthorizations(key_characteristics);
EXPECT_TRUE(verify_attestation_record(challenge, app_id, //
sw_enforced, hw_enforced, SecLevel(),
cert_chain_[0].encodedCertificate));
CheckedDeleteKey(&key_blob);
}
}
/*
* NewKeyGenerationTest.NoInvalidRsaSizes
*
* Verifies that keymint cannot generate any RSA key sizes that are designated as invalid.
*/
TEST_P(NewKeyGenerationTest, NoInvalidRsaSizes) {
for (auto key_size : InvalidKeySizes(Algorithm::RSA)) {
vector<uint8_t> key_blob;
vector<KeyCharacteristics> key_characteristics;
ASSERT_EQ(ErrorCode::UNSUPPORTED_KEY_SIZE,
GenerateKey(AuthorizationSetBuilder()
.RsaSigningKey(key_size, 65537)
.Digest(Digest::NONE)
.Padding(PaddingMode::NONE)
.SetDefaultValidity(),
&key_blob, &key_characteristics));
}
}
/*
* NewKeyGenerationTest.RsaNoDefaultSize
*
* Verifies that failing to specify a key size for RSA key generation returns
* UNSUPPORTED_KEY_SIZE.
*/
TEST_P(NewKeyGenerationTest, RsaNoDefaultSize) {
ASSERT_EQ(ErrorCode::UNSUPPORTED_KEY_SIZE,
GenerateKey(AuthorizationSetBuilder()
.Authorization(TAG_ALGORITHM, Algorithm::RSA)
.Authorization(TAG_RSA_PUBLIC_EXPONENT, 3U)
.SigningKey()
.SetDefaultValidity()));
}
/*
* NewKeyGenerationTest.Ecdsa
*
* Verifies that keymint can generate all required EC key sizes, and that the resulting keys
* have correct characteristics.
*/
TEST_P(NewKeyGenerationTest, Ecdsa) {
for (auto key_size : ValidKeySizes(Algorithm::EC)) {
vector<uint8_t> key_blob;
vector<KeyCharacteristics> key_characteristics;
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.EcdsaSigningKey(key_size)
.Digest(Digest::NONE)
.SetDefaultValidity(),
&key_blob, &key_characteristics));
ASSERT_GT(key_blob.size(), 0U);
CheckBaseParams(key_characteristics);
AuthorizationSet crypto_params = SecLevelAuthorizations(key_characteristics);
EXPECT_TRUE(crypto_params.Contains(TAG_ALGORITHM, Algorithm::EC));
EXPECT_TRUE(crypto_params.Contains(TAG_KEY_SIZE, key_size))
<< "Key size " << key_size << "missing";
CheckedDeleteKey(&key_blob);
}
}
/*
* NewKeyGenerationTest.LimitedUsageEcdsa
*
* Verifies that KeyMint can generate all required EC key sizes with limited usage, and that the
* resulting keys have correct characteristics.
*/
TEST_P(NewKeyGenerationTest, LimitedUsageEcdsa) {
for (auto key_size : ValidKeySizes(Algorithm::EC)) {
vector<uint8_t> key_blob;
vector<KeyCharacteristics> key_characteristics;
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.EcdsaSigningKey(key_size)
.Digest(Digest::NONE)
.Authorization(TAG_USAGE_COUNT_LIMIT, 1)
.SetDefaultValidity(),
&key_blob, &key_characteristics));
ASSERT_GT(key_blob.size(), 0U);
CheckBaseParams(key_characteristics);
AuthorizationSet crypto_params = SecLevelAuthorizations(key_characteristics);
EXPECT_TRUE(crypto_params.Contains(TAG_ALGORITHM, Algorithm::EC));
EXPECT_TRUE(crypto_params.Contains(TAG_KEY_SIZE, key_size))
<< "Key size " << key_size << "missing";
// Check the usage count limit tag appears in the authorizations.
AuthorizationSet auths;
for (auto& entry : key_characteristics) {
auths.push_back(AuthorizationSet(entry.authorizations));
}
EXPECT_TRUE(auths.Contains(TAG_USAGE_COUNT_LIMIT, 1U))
<< "key usage count limit " << 1U << " missing";
CheckedDeleteKey(&key_blob);
}
}
/*
* NewKeyGenerationTest.EcdsaDefaultSize
*
* Verifies that failing to specify a key size for EC key generation returns
* UNSUPPORTED_KEY_SIZE.
*/
TEST_P(NewKeyGenerationTest, EcdsaDefaultSize) {
ASSERT_EQ(ErrorCode::UNSUPPORTED_KEY_SIZE,
GenerateKey(AuthorizationSetBuilder()
.Authorization(TAG_ALGORITHM, Algorithm::EC)
.SigningKey()
.Digest(Digest::NONE)
.SetDefaultValidity()));
}
/*
* NewKeyGenerationTest.EcdsaInvalidSize
*
* Verifies that specifying an invalid key size for EC key generation returns
* UNSUPPORTED_KEY_SIZE.
*/
TEST_P(NewKeyGenerationTest, EcdsaInvalidSize) {
for (auto key_size : InvalidKeySizes(Algorithm::EC)) {
vector<uint8_t> key_blob;
vector<KeyCharacteristics> key_characteristics;
ASSERT_EQ(ErrorCode::UNSUPPORTED_KEY_SIZE, GenerateKey(AuthorizationSetBuilder()
.EcdsaSigningKey(key_size)
.Digest(Digest::NONE)
.SetDefaultValidity(),
&key_blob, &key_characteristics));
}
ASSERT_EQ(ErrorCode::UNSUPPORTED_KEY_SIZE, GenerateKey(AuthorizationSetBuilder()
.EcdsaSigningKey(190)
.Digest(Digest::NONE)
.SetDefaultValidity()));
}
/*
* NewKeyGenerationTest.EcdsaMismatchKeySize
*
* Verifies that specifying mismatched key size and curve for EC key generation returns
* INVALID_ARGUMENT.
*/
TEST_P(NewKeyGenerationTest, EcdsaMismatchKeySize) {
if (SecLevel() == SecurityLevel::STRONGBOX) return;
ASSERT_EQ(ErrorCode::INVALID_ARGUMENT,
GenerateKey(AuthorizationSetBuilder()
.EcdsaSigningKey(224)
.Authorization(TAG_EC_CURVE, EcCurve::P_256)
.Digest(Digest::NONE)
.SetDefaultValidity()));
}
/*
* NewKeyGenerationTest.EcdsaAllValidSizes
*
* Verifies that keymint supports all required EC key sizes.
*/
TEST_P(NewKeyGenerationTest, EcdsaAllValidSizes) {
auto valid_sizes = ValidKeySizes(Algorithm::EC);
for (size_t size : valid_sizes) {
EXPECT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.EcdsaSigningKey(size)
.Digest(Digest::NONE)
.SetDefaultValidity()))
<< "Failed to generate size: " << size;
CheckedDeleteKey();
}
}
/*
* NewKeyGenerationTest.EcdsaInvalidCurves
*
* Verifies that keymint does not support any curve designated as unsupported.
*/
TEST_P(NewKeyGenerationTest, EcdsaAllValidCurves) {
Digest digest;
if (SecLevel() == SecurityLevel::STRONGBOX) {
digest = Digest::SHA_2_256;
} else {
digest = Digest::SHA_2_512;
}
for (auto curve : ValidCurves()) {
EXPECT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.EcdsaSigningKey(curve)
.Digest(digest)
.SetDefaultValidity()))
<< "Failed to generate key on curve: " << curve;
CheckedDeleteKey();
}
}
/*
* NewKeyGenerationTest.Hmac
*
* Verifies that keymint supports all required digests, and that the resulting keys have correct
* characteristics.
*/
TEST_P(NewKeyGenerationTest, Hmac) {
for (auto digest : ValidDigests(false /* withNone */, true /* withMD5 */)) {
vector<uint8_t> key_blob;
vector<KeyCharacteristics> key_characteristics;
constexpr size_t key_size = 128;
ASSERT_EQ(ErrorCode::OK,
GenerateKey(
AuthorizationSetBuilder().HmacKey(key_size).Digest(digest).Authorization(
TAG_MIN_MAC_LENGTH, 128),
&key_blob, &key_characteristics));
ASSERT_GT(key_blob.size(), 0U);
CheckBaseParams(key_characteristics);
AuthorizationSet crypto_params = SecLevelAuthorizations(key_characteristics);
EXPECT_TRUE(crypto_params.Contains(TAG_ALGORITHM, Algorithm::HMAC));
EXPECT_TRUE(crypto_params.Contains(TAG_KEY_SIZE, key_size))
<< "Key size " << key_size << "missing";
CheckedDeleteKey(&key_blob);
}
}
/*
* NewKeyGenerationTest.LimitedUsageHmac
*
* Verifies that KeyMint supports all required digests with limited usage Hmac, and that the
* resulting keys have correct characteristics.
*/
TEST_P(NewKeyGenerationTest, LimitedUsageHmac) {
for (auto digest : ValidDigests(false /* withNone */, true /* withMD5 */)) {
vector<uint8_t> key_blob;
vector<KeyCharacteristics> key_characteristics;
constexpr size_t key_size = 128;
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.HmacKey(key_size)
.Digest(digest)
.Authorization(TAG_MIN_MAC_LENGTH, 128)
.Authorization(TAG_USAGE_COUNT_LIMIT, 1),
&key_blob, &key_characteristics));
ASSERT_GT(key_blob.size(), 0U);
CheckBaseParams(key_characteristics);
AuthorizationSet crypto_params = SecLevelAuthorizations(key_characteristics);
EXPECT_TRUE(crypto_params.Contains(TAG_ALGORITHM, Algorithm::HMAC));
EXPECT_TRUE(crypto_params.Contains(TAG_KEY_SIZE, key_size))
<< "Key size " << key_size << "missing";
// Check the usage count limit tag appears in the authorizations.
AuthorizationSet auths;
for (auto& entry : key_characteristics) {
auths.push_back(AuthorizationSet(entry.authorizations));
}
EXPECT_TRUE(auths.Contains(TAG_USAGE_COUNT_LIMIT, 1U))
<< "key usage count limit " << 1U << " missing";
CheckedDeleteKey(&key_blob);
}
}
/*
* NewKeyGenerationTest.HmacCheckKeySizes
*
* Verifies that keymint supports all key sizes, and rejects all invalid key sizes.
*/
TEST_P(NewKeyGenerationTest, HmacCheckKeySizes) {
for (size_t key_size = 0; key_size <= 512; ++key_size) {
if (key_size < 64 || key_size % 8 != 0) {
// To keep this test from being very slow, we only test a random fraction of
// non-byte key sizes. We test only ~10% of such cases. Since there are 392 of
// them, we expect to run ~40 of them in each run.
if (key_size % 8 == 0 || random() % 10 == 0) {
EXPECT_EQ(ErrorCode::UNSUPPORTED_KEY_SIZE,
GenerateKey(AuthorizationSetBuilder()
.HmacKey(key_size)
.Digest(Digest::SHA_2_256)
.Authorization(TAG_MIN_MAC_LENGTH, 256)))
<< "HMAC key size " << key_size << " invalid";
}
} else {
EXPECT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.HmacKey(key_size)
.Digest(Digest::SHA_2_256)
.Authorization(TAG_MIN_MAC_LENGTH, 256)))
<< "Failed to generate HMAC key of size " << key_size;
CheckedDeleteKey();
}
}
}
/*
* NewKeyGenerationTest.HmacCheckMinMacLengths
*
* Verifies that keymint supports all required MAC lengths and rejects all invalid lengths. This
* test is probabilistic in order to keep the runtime down, but any failure prints out the
* specific MAC length that failed, so reproducing a failed run will be easy.
*/
TEST_P(NewKeyGenerationTest, HmacCheckMinMacLengths) {
for (size_t min_mac_length = 0; min_mac_length <= 256; ++min_mac_length) {
if (min_mac_length < 64 || min_mac_length % 8 != 0) {
// To keep this test from being very long, we only test a random fraction of
// non-byte lengths. We test only ~10% of such cases. Since there are 172 of them,
// we expect to run ~17 of them in each run.
if (min_mac_length % 8 == 0 || random() % 10 == 0) {
EXPECT_EQ(ErrorCode::UNSUPPORTED_MIN_MAC_LENGTH,
GenerateKey(AuthorizationSetBuilder()
.HmacKey(128)
.Digest(Digest::SHA_2_256)
.Authorization(TAG_MIN_MAC_LENGTH, min_mac_length)))
<< "HMAC min mac length " << min_mac_length << " invalid.";
}
} else {
EXPECT_EQ(ErrorCode::OK,
GenerateKey(AuthorizationSetBuilder()
.HmacKey(128)
.Digest(Digest::SHA_2_256)
.Authorization(TAG_MIN_MAC_LENGTH, min_mac_length)))
<< "Failed to generate HMAC key with min MAC length " << min_mac_length;
CheckedDeleteKey();
}
}
}
/*
* NewKeyGenerationTest.HmacMultipleDigests
*
* Verifies that keymint rejects HMAC key generation with multiple specified digest algorithms.
*/
TEST_P(NewKeyGenerationTest, HmacMultipleDigests) {
if (SecLevel() == SecurityLevel::STRONGBOX) return;
ASSERT_EQ(ErrorCode::UNSUPPORTED_DIGEST,
GenerateKey(AuthorizationSetBuilder()
.HmacKey(128)
.Digest(Digest::SHA1)
.Digest(Digest::SHA_2_256)
.Authorization(TAG_MIN_MAC_LENGTH, 128)));
}
/*
* NewKeyGenerationTest.HmacDigestNone
*
* Verifies that keymint rejects HMAC key generation with no digest or Digest::NONE
*/
TEST_P(NewKeyGenerationTest, HmacDigestNone) {
ASSERT_EQ(ErrorCode::UNSUPPORTED_DIGEST,
GenerateKey(AuthorizationSetBuilder().HmacKey(128).Authorization(TAG_MIN_MAC_LENGTH,
128)));
ASSERT_EQ(ErrorCode::UNSUPPORTED_DIGEST,
GenerateKey(AuthorizationSetBuilder()
.HmacKey(128)
.Digest(Digest::NONE)
.Authorization(TAG_MIN_MAC_LENGTH, 128)));
}
INSTANTIATE_KEYMINT_AIDL_TEST(NewKeyGenerationTest);
typedef KeyMintAidlTestBase SigningOperationsTest;
/*
* SigningOperationsTest.RsaSuccess
*
* Verifies that raw RSA signature operations succeed.
*/
TEST_P(SigningOperationsTest, RsaSuccess) {
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.RsaSigningKey(2048, 65537)
.Digest(Digest::NONE)
.Padding(PaddingMode::NONE)
.Authorization(TAG_NO_AUTH_REQUIRED)
.SetDefaultValidity()));
string message = "12345678901234567890123456789012";
string signature = SignMessage(
message, AuthorizationSetBuilder().Digest(Digest::NONE).Padding(PaddingMode::NONE));
}
/*
* SigningOperationsTest.RsaUseRequiresCorrectAppIdAppData
*
* Verifies that using an RSA key requires the correct app data.
*/
TEST_P(SigningOperationsTest, RsaUseRequiresCorrectAppIdAppData) {
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.Authorization(TAG_NO_AUTH_REQUIRED)
.RsaSigningKey(2048, 65537)
.Digest(Digest::NONE)
.Padding(PaddingMode::NONE)
.Authorization(TAG_APPLICATION_ID, "clientid")
.Authorization(TAG_APPLICATION_DATA, "appdata")
.SetDefaultValidity()));
EXPECT_EQ(ErrorCode::INVALID_KEY_BLOB,
Begin(KeyPurpose::SIGN,
AuthorizationSetBuilder().Digest(Digest::NONE).Padding(PaddingMode::NONE)));
AbortIfNeeded();
EXPECT_EQ(ErrorCode::INVALID_KEY_BLOB,
Begin(KeyPurpose::SIGN, AuthorizationSetBuilder()
.Digest(Digest::NONE)
.Padding(PaddingMode::NONE)
.Authorization(TAG_APPLICATION_ID, "clientid")));
AbortIfNeeded();
EXPECT_EQ(ErrorCode::INVALID_KEY_BLOB,
Begin(KeyPurpose::SIGN, AuthorizationSetBuilder()
.Digest(Digest::NONE)
.Padding(PaddingMode::NONE)
.Authorization(TAG_APPLICATION_DATA, "appdata")));
AbortIfNeeded();
EXPECT_EQ(ErrorCode::OK,
Begin(KeyPurpose::SIGN, AuthorizationSetBuilder()
.Digest(Digest::NONE)
.Padding(PaddingMode::NONE)
.Authorization(TAG_APPLICATION_DATA, "appdata")
.Authorization(TAG_APPLICATION_ID, "clientid")));
AbortIfNeeded();
}
/*
* SigningOperationsTest.RsaPssSha256Success
*
* Verifies that RSA-PSS signature operations succeed.
*/
TEST_P(SigningOperationsTest, RsaPssSha256Success) {
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.RsaSigningKey(2048, 65537)
.Digest(Digest::SHA_2_256)
.Padding(PaddingMode::RSA_PSS)
.Authorization(TAG_NO_AUTH_REQUIRED)
.SetDefaultValidity()));
// Use large message, which won't work without digesting.
string message(1024, 'a');
string signature = SignMessage(
message,
AuthorizationSetBuilder().Digest(Digest::SHA_2_256).Padding(PaddingMode::RSA_PSS));
}
/*
* SigningOperationsTest.RsaPaddingNoneDoesNotAllowOther
*
* Verifies that keymint rejects signature operations that specify a padding mode when the key
* supports only unpadded operations.
*/
TEST_P(SigningOperationsTest, RsaPaddingNoneDoesNotAllowOther) {
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.RsaSigningKey(2048, 65537)
.Digest(Digest::NONE)
.Authorization(TAG_NO_AUTH_REQUIRED)
.Padding(PaddingMode::NONE)
.SetDefaultValidity()));
string message = "12345678901234567890123456789012";
string signature;
EXPECT_EQ(ErrorCode::INCOMPATIBLE_PADDING_MODE,
Begin(KeyPurpose::SIGN, AuthorizationSetBuilder()
.Digest(Digest::NONE)
.Padding(PaddingMode::RSA_PKCS1_1_5_SIGN)));
}
/*
* SigningOperationsTest.NoUserConfirmation
*
* Verifies that keymint rejects signing operations for keys with
* TRUSTED_CONFIRMATION_REQUIRED and no valid confirmation token
* presented.
*/
TEST_P(SigningOperationsTest, NoUserConfirmation) {
if (SecLevel() == SecurityLevel::STRONGBOX) return;
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.RsaSigningKey(1024, 65537)
.Digest(Digest::NONE)
.Padding(PaddingMode::NONE)
.Authorization(TAG_NO_AUTH_REQUIRED)
.Authorization(TAG_TRUSTED_CONFIRMATION_REQUIRED)
.SetDefaultValidity()));
const string message = "12345678901234567890123456789012";
EXPECT_EQ(ErrorCode::OK,
Begin(KeyPurpose::SIGN,
AuthorizationSetBuilder().Digest(Digest::NONE).Padding(PaddingMode::NONE)));
string signature;
EXPECT_EQ(ErrorCode::NO_USER_CONFIRMATION, Finish(message, &signature));
}
/*
* SigningOperationsTest.RsaPkcs1Sha256Success
*
* Verifies that digested RSA-PKCS1 signature operations succeed.
*/
TEST_P(SigningOperationsTest, RsaPkcs1Sha256Success) {
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.RsaSigningKey(2048, 65537)
.Digest(Digest::SHA_2_256)
.Authorization(TAG_NO_AUTH_REQUIRED)
.Padding(PaddingMode::RSA_PKCS1_1_5_SIGN)
.SetDefaultValidity()));
string message(1024, 'a');
string signature = SignMessage(message, AuthorizationSetBuilder()
.Digest(Digest::SHA_2_256)
.Padding(PaddingMode::RSA_PKCS1_1_5_SIGN));
}
/*
* SigningOperationsTest.RsaPkcs1NoDigestSuccess
*
* Verifies that undigested RSA-PKCS1 signature operations succeed.
*/
TEST_P(SigningOperationsTest, RsaPkcs1NoDigestSuccess) {
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.RsaSigningKey(2048, 65537)
.Digest(Digest::NONE)
.Authorization(TAG_NO_AUTH_REQUIRED)
.Padding(PaddingMode::RSA_PKCS1_1_5_SIGN)
.SetDefaultValidity()));
string message(53, 'a');
string signature = SignMessage(message, AuthorizationSetBuilder()
.Digest(Digest::NONE)
.Padding(PaddingMode::RSA_PKCS1_1_5_SIGN));
}
/*
* SigningOperationsTest.RsaPkcs1NoDigestTooLarge
*
* Verifies that undigested RSA-PKCS1 signature operations fail with the correct error code when
* given a too-long message.
*/
TEST_P(SigningOperationsTest, RsaPkcs1NoDigestTooLong) {
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.RsaSigningKey(2048, 65537)
.Digest(Digest::NONE)
.Authorization(TAG_NO_AUTH_REQUIRED)
.Padding(PaddingMode::RSA_PKCS1_1_5_SIGN)
.SetDefaultValidity()));
string message(257, 'a');
EXPECT_EQ(ErrorCode::OK,
Begin(KeyPurpose::SIGN, AuthorizationSetBuilder()
.Digest(Digest::NONE)
.Padding(PaddingMode::RSA_PKCS1_1_5_SIGN)));
string signature;
EXPECT_EQ(ErrorCode::INVALID_INPUT_LENGTH, Finish(message, &signature));
}
/*
* SigningOperationsTest.RsaPssSha512TooSmallKey
*
* Verifies that undigested RSA-PSS signature operations fail with the correct error code when
* used with a key that is too small for the message.
*
* A PSS-padded message is of length salt_size + digest_size + 16 (sizes in bits), and the
* keymint specification requires that salt_size == digest_size, so the message will be
* digest_size * 2 +
* 16. Such a message can only be signed by a given key if the key is at least that size. This
* test uses SHA512, which has a digest_size == 512, so the message size is 1040 bits, too large
* for a 1024-bit key.
*/
TEST_P(SigningOperationsTest, RsaPssSha512TooSmallKey) {
if (SecLevel() == SecurityLevel::STRONGBOX) return;
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.RsaSigningKey(1024, 65537)
.Digest(Digest::SHA_2_512)
.Authorization(TAG_NO_AUTH_REQUIRED)
.Padding(PaddingMode::RSA_PSS)
.SetDefaultValidity()));
EXPECT_EQ(ErrorCode::INCOMPATIBLE_DIGEST,
Begin(KeyPurpose::SIGN, AuthorizationSetBuilder()
.Digest(Digest::SHA_2_512)
.Padding(PaddingMode::RSA_PSS)));
}
/*
* SigningOperationsTest.RsaNoPaddingTooLong
*
* Verifies that raw RSA signature operations fail with the correct error code when
* given a too-long message.
*/
TEST_P(SigningOperationsTest, RsaNoPaddingTooLong) {
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.RsaSigningKey(2048, 65537)
.Digest(Digest::NONE)
.Authorization(TAG_NO_AUTH_REQUIRED)
.Padding(PaddingMode::RSA_PKCS1_1_5_SIGN)
.SetDefaultValidity()));
// One byte too long
string message(2048 / 8 + 1, 'a');
ASSERT_EQ(ErrorCode::OK,
Begin(KeyPurpose::SIGN, AuthorizationSetBuilder()
.Digest(Digest::NONE)
.Padding(PaddingMode::RSA_PKCS1_1_5_SIGN)));
string result;
ErrorCode finish_error_code = Finish(message, &result);
EXPECT_TRUE(finish_error_code == ErrorCode::INVALID_INPUT_LENGTH ||
finish_error_code == ErrorCode::INVALID_ARGUMENT);
// Very large message that should exceed the transfer buffer size of any reasonable TEE.
message = string(128 * 1024, 'a');
ASSERT_EQ(ErrorCode::OK,
Begin(KeyPurpose::SIGN, AuthorizationSetBuilder()
.Digest(Digest::NONE)
.Padding(PaddingMode::RSA_PKCS1_1_5_SIGN)));
finish_error_code = Finish(message, &result);
EXPECT_TRUE(finish_error_code == ErrorCode::INVALID_INPUT_LENGTH ||
finish_error_code == ErrorCode::INVALID_ARGUMENT);
}
/*
* SigningOperationsTest.RsaAbort
*
* Verifies that operations can be aborted correctly. Uses an RSA signing operation for the
* test, but the behavior should be algorithm and purpose-independent.
*/
TEST_P(SigningOperationsTest, RsaAbort) {
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.RsaSigningKey(2048, 65537)
.Digest(Digest::NONE)
.Authorization(TAG_NO_AUTH_REQUIRED)
.Padding(PaddingMode::NONE)
.SetDefaultValidity()));
ASSERT_EQ(ErrorCode::OK,
Begin(KeyPurpose::SIGN,
AuthorizationSetBuilder().Digest(Digest::NONE).Padding(PaddingMode::NONE)));
EXPECT_EQ(ErrorCode::OK, Abort());
// Another abort should fail
EXPECT_EQ(ErrorCode::INVALID_OPERATION_HANDLE, Abort());
// Set to sentinel, so TearDown() doesn't try to abort again.
op_.reset();
}
/*
* SigningOperationsTest.RsaUnsupportedPadding
*
* Verifies that RSA operations fail with the correct error (but key gen succeeds) when used
* with a padding mode inappropriate for RSA.
*/
TEST_P(SigningOperationsTest, RsaUnsupportedPadding) {
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.RsaSigningKey(2048, 65537)
.Authorization(TAG_NO_AUTH_REQUIRED)
.Digest(Digest::SHA_2_256 /* supported digest */)
.Padding(PaddingMode::PKCS7)
.SetDefaultValidity()));
ASSERT_EQ(
ErrorCode::UNSUPPORTED_PADDING_MODE,
Begin(KeyPurpose::SIGN,
AuthorizationSetBuilder().Digest(Digest::SHA_2_256).Padding(PaddingMode::PKCS7)));
}
/*
* SigningOperationsTest.RsaPssNoDigest
*
* Verifies that RSA PSS operations fail when no digest is used. PSS requires a digest.
*/
TEST_P(SigningOperationsTest, RsaNoDigest) {
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.RsaSigningKey(2048, 65537)
.Authorization(TAG_NO_AUTH_REQUIRED)
.Digest(Digest::NONE)
.Padding(PaddingMode::RSA_PSS)
.SetDefaultValidity()));
ASSERT_EQ(ErrorCode::INCOMPATIBLE_DIGEST,
Begin(KeyPurpose::SIGN,
AuthorizationSetBuilder().Digest(Digest::NONE).Padding(PaddingMode::RSA_PSS)));
ASSERT_EQ(ErrorCode::UNSUPPORTED_DIGEST,
Begin(KeyPurpose::SIGN, AuthorizationSetBuilder().Padding(PaddingMode::RSA_PSS)));
}
/*
* SigningOperationsTest.RsaPssNoDigest
*
* Verifies that RSA operations fail when no padding mode is specified. PaddingMode::NONE is
* supported in some cases (as validated in other tests), but a mode must be specified.
*/
TEST_P(SigningOperationsTest, RsaNoPadding) {
// Padding must be specified
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.RsaKey(2048, 65537)
.Authorization(TAG_NO_AUTH_REQUIRED)
.SigningKey()
.Digest(Digest::NONE)
.SetDefaultValidity()));
ASSERT_EQ(ErrorCode::UNSUPPORTED_PADDING_MODE,
Begin(KeyPurpose::SIGN, AuthorizationSetBuilder().Digest(Digest::NONE)));
}
/*
* SigningOperationsTest.RsaShortMessage
*
* Verifies that raw RSA signatures succeed with a message shorter than the key size.
*/
TEST_P(SigningOperationsTest, RsaTooShortMessage) {
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.Authorization(TAG_NO_AUTH_REQUIRED)
.RsaSigningKey(2048, 65537)
.Digest(Digest::NONE)
.Padding(PaddingMode::NONE)
.SetDefaultValidity()));
// Barely shorter
string message(2048 / 8 - 1, 'a');
SignMessage(message, AuthorizationSetBuilder().Digest(Digest::NONE).Padding(PaddingMode::NONE));
// Much shorter
message = "a";
SignMessage(message, AuthorizationSetBuilder().Digest(Digest::NONE).Padding(PaddingMode::NONE));
}
/*
* SigningOperationsTest.RsaSignWithEncryptionKey
*
* Verifies that RSA encryption keys cannot be used to sign.
*/
TEST_P(SigningOperationsTest, RsaSignWithEncryptionKey) {
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.Authorization(TAG_NO_AUTH_REQUIRED)
.RsaEncryptionKey(2048, 65537)
.Digest(Digest::NONE)
.Padding(PaddingMode::NONE)
.SetDefaultValidity()));
ASSERT_EQ(ErrorCode::INCOMPATIBLE_PURPOSE,
Begin(KeyPurpose::SIGN,
AuthorizationSetBuilder().Digest(Digest::NONE).Padding(PaddingMode::NONE)));
}
/*
* SigningOperationsTest.RsaSignTooLargeMessage
*
* Verifies that attempting a raw signature of a message which is the same length as the key,
* but numerically larger than the public modulus, fails with the correct error.
*/
TEST_P(SigningOperationsTest, RsaSignTooLargeMessage) {
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.Authorization(TAG_NO_AUTH_REQUIRED)
.RsaSigningKey(2048, 65537)
.Digest(Digest::NONE)
.Padding(PaddingMode::NONE)
.SetDefaultValidity()));
// Largest possible message will always be larger than the public modulus.
string message(2048 / 8, static_cast<char>(0xff));
ASSERT_EQ(ErrorCode::OK, Begin(KeyPurpose::SIGN, AuthorizationSetBuilder()
.Authorization(TAG_NO_AUTH_REQUIRED)
.Digest(Digest::NONE)
.Padding(PaddingMode::NONE)));
string signature;
ASSERT_EQ(ErrorCode::INVALID_ARGUMENT, Finish(message, &signature));
}
/*
* SigningOperationsTest.EcdsaAllSizesAndHashes
*
* Verifies that ECDSA operations succeed with all possible key sizes and hashes.
*/
TEST_P(SigningOperationsTest, EcdsaAllSizesAndHashes) {
for (auto key_size : ValidKeySizes(Algorithm::EC)) {
for (auto digest : ValidDigests(false /* withNone */, false /* withMD5 */)) {
ErrorCode error = GenerateKey(AuthorizationSetBuilder()
.Authorization(TAG_NO_AUTH_REQUIRED)
.EcdsaSigningKey(key_size)
.Digest(digest)
.SetDefaultValidity());
EXPECT_EQ(ErrorCode::OK, error) << "Failed to generate ECDSA key with size " << key_size
<< " and digest " << digest;
if (error != ErrorCode::OK) continue;
string message(1024, 'a');
if (digest == Digest::NONE) message.resize(key_size / 8);
SignMessage(message, AuthorizationSetBuilder().Digest(digest));
CheckedDeleteKey();
}
}
}
/*
* SigningOperationsTest.EcdsaAllCurves
*
* Verifies that ECDSA operations succeed with all possible curves.
*/
TEST_P(SigningOperationsTest, EcdsaAllCurves) {
for (auto curve : ValidCurves()) {
ErrorCode error = GenerateKey(AuthorizationSetBuilder()
.Authorization(TAG_NO_AUTH_REQUIRED)
.EcdsaSigningKey(curve)
.Digest(Digest::SHA_2_256)
.SetDefaultValidity());
EXPECT_EQ(ErrorCode::OK, error) << "Failed to generate ECDSA key with curve " << curve;
if (error != ErrorCode::OK) continue;
string message(1024, 'a');
SignMessage(message, AuthorizationSetBuilder().Digest(Digest::SHA_2_256));
CheckedDeleteKey();
}
}
/*
* SigningOperationsTest.EcdsaNoDigestHugeData
*
* Verifies that ECDSA operations support very large messages, even without digesting. This
* should work because ECDSA actually only signs the leftmost L_n bits of the message, however
* large it may be. Not using digesting is a bad idea, but in some cases digesting is done by
* the framework.
*/
TEST_P(SigningOperationsTest, EcdsaNoDigestHugeData) {
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.Authorization(TAG_NO_AUTH_REQUIRED)
.EcdsaSigningKey(256)
.Digest(Digest::NONE)
.SetDefaultValidity()));
string message(1 * 1024, 'a');
SignMessage(message, AuthorizationSetBuilder().Digest(Digest::NONE));
}
/*
* SigningOperationsTest.EcUseRequiresCorrectAppIdAppData
*
* Verifies that using an EC key requires the correct app ID/data.
*/
TEST_P(SigningOperationsTest, EcUseRequiresCorrectAppIdAppData) {
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.Authorization(TAG_NO_AUTH_REQUIRED)
.EcdsaSigningKey(256)
.Digest(Digest::NONE)
.Authorization(TAG_APPLICATION_ID, "clientid")
.Authorization(TAG_APPLICATION_DATA, "appdata")
.SetDefaultValidity()));
EXPECT_EQ(ErrorCode::INVALID_KEY_BLOB,
Begin(KeyPurpose::SIGN, AuthorizationSetBuilder().Digest(Digest::NONE)));
AbortIfNeeded();
EXPECT_EQ(ErrorCode::INVALID_KEY_BLOB,
Begin(KeyPurpose::SIGN, AuthorizationSetBuilder()
.Digest(Digest::NONE)
.Authorization(TAG_APPLICATION_ID, "clientid")));
AbortIfNeeded();
EXPECT_EQ(ErrorCode::INVALID_KEY_BLOB,
Begin(KeyPurpose::SIGN, AuthorizationSetBuilder()
.Digest(Digest::NONE)
.Authorization(TAG_APPLICATION_DATA, "appdata")));
AbortIfNeeded();
EXPECT_EQ(ErrorCode::OK,
Begin(KeyPurpose::SIGN, AuthorizationSetBuilder()
.Digest(Digest::NONE)
.Authorization(TAG_APPLICATION_DATA, "appdata")
.Authorization(TAG_APPLICATION_ID, "clientid")));
AbortIfNeeded();
}
/*
* SigningOperationsTest.AesEcbSign
*
* Verifies that attempts to use AES keys to sign fail in the correct way.
*/
TEST_P(SigningOperationsTest, AesEcbSign) {
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.Authorization(TAG_NO_AUTH_REQUIRED)
.SigningKey()
.AesEncryptionKey(128)
.Authorization(TAG_BLOCK_MODE, BlockMode::ECB)));
AuthorizationSet out_params;
EXPECT_EQ(ErrorCode::UNSUPPORTED_PURPOSE,
Begin(KeyPurpose::SIGN, AuthorizationSet() /* in_params */, &out_params));
EXPECT_EQ(ErrorCode::UNSUPPORTED_PURPOSE,
Begin(KeyPurpose::VERIFY, AuthorizationSet() /* in_params */, &out_params));
}
/*
* SigningOperationsTest.HmacAllDigests
*
* Verifies that HMAC works with all digests.
*/
TEST_P(SigningOperationsTest, HmacAllDigests) {
for (auto digest : ValidDigests(false /* withNone */, false /* withMD5 */)) {
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.Authorization(TAG_NO_AUTH_REQUIRED)
.HmacKey(128)
.Digest(digest)
.Authorization(TAG_MIN_MAC_LENGTH, 160)))
<< "Failed to create HMAC key with digest " << digest;
string message = "12345678901234567890123456789012";
string signature = MacMessage(message, digest, 160);
EXPECT_EQ(160U / 8U, signature.size())
<< "Failed to sign with HMAC key with digest " << digest;
CheckedDeleteKey();
}
}
/*
* SigningOperationsTest.HmacSha256TooLargeMacLength
*
* Verifies that HMAC fails in the correct way when asked to generate a MAC larger than the
* digest size.
*/
TEST_P(SigningOperationsTest, HmacSha256TooLargeMacLength) {
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.Authorization(TAG_NO_AUTH_REQUIRED)
.HmacKey(128)
.Digest(Digest::SHA_2_256)
.Authorization(TAG_MIN_MAC_LENGTH, 256)));
AuthorizationSet output_params;
EXPECT_EQ(ErrorCode::UNSUPPORTED_MAC_LENGTH, Begin(KeyPurpose::SIGN, key_blob_,
AuthorizationSetBuilder()
.Digest(Digest::SHA_2_256)
.Authorization(TAG_MAC_LENGTH, 264),
&output_params));
}
/*
* SigningOperationsTest.HmacSha256TooSmallMacLength
*
* Verifies that HMAC fails in the correct way when asked to generate a MAC smaller than the
* specified minimum MAC length.
*/
TEST_P(SigningOperationsTest, HmacSha256TooSmallMacLength) {
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.Authorization(TAG_NO_AUTH_REQUIRED)
.HmacKey(128)
.Digest(Digest::SHA_2_256)
.Authorization(TAG_MIN_MAC_LENGTH, 128)));
AuthorizationSet output_params;
EXPECT_EQ(ErrorCode::INVALID_MAC_LENGTH, Begin(KeyPurpose::SIGN, key_blob_,
AuthorizationSetBuilder()
.Digest(Digest::SHA_2_256)
.Authorization(TAG_MAC_LENGTH, 120),
&output_params));
}
/*
* SigningOperationsTest.HmacRfc4231TestCase3
*
* Validates against the test vectors from RFC 4231 test case 3.
*/
TEST_P(SigningOperationsTest, HmacRfc4231TestCase3) {
string key(20, 0xaa);
string message(50, 0xdd);
uint8_t sha_224_expected[] = {
0x7f, 0xb3, 0xcb, 0x35, 0x88, 0xc6, 0xc1, 0xf6, 0xff, 0xa9, 0x69, 0x4d, 0x7d, 0x6a,
0xd2, 0x64, 0x93, 0x65, 0xb0, 0xc1, 0xf6, 0x5d, 0x69, 0xd1, 0xec, 0x83, 0x33, 0xea,
};
uint8_t sha_256_expected[] = {
0x77, 0x3e, 0xa9, 0x1e, 0x36, 0x80, 0x0e, 0x46, 0x85, 0x4d, 0xb8,
0xeb, 0xd0, 0x91, 0x81, 0xa7, 0x29, 0x59, 0x09, 0x8b, 0x3e, 0xf8,
0xc1, 0x22, 0xd9, 0x63, 0x55, 0x14, 0xce, 0xd5, 0x65, 0xfe,
};
uint8_t sha_384_expected[] = {
0x88, 0x06, 0x26, 0x08, 0xd3, 0xe6, 0xad, 0x8a, 0x0a, 0xa2, 0xac, 0xe0,
0x14, 0xc8, 0xa8, 0x6f, 0x0a, 0xa6, 0x35, 0xd9, 0x47, 0xac, 0x9f, 0xeb,
0xe8, 0x3e, 0xf4, 0xe5, 0x59, 0x66, 0x14, 0x4b, 0x2a, 0x5a, 0xb3, 0x9d,
0xc1, 0x38, 0x14, 0xb9, 0x4e, 0x3a, 0xb6, 0xe1, 0x01, 0xa3, 0x4f, 0x27,
};
uint8_t sha_512_expected[] = {
0xfa, 0x73, 0xb0, 0x08, 0x9d, 0x56, 0xa2, 0x84, 0xef, 0xb0, 0xf0, 0x75, 0x6c,
0x89, 0x0b, 0xe9, 0xb1, 0xb5, 0xdb, 0xdd, 0x8e, 0xe8, 0x1a, 0x36, 0x55, 0xf8,
0x3e, 0x33, 0xb2, 0x27, 0x9d, 0x39, 0xbf, 0x3e, 0x84, 0x82, 0x79, 0xa7, 0x22,
0xc8, 0x06, 0xb4, 0x85, 0xa4, 0x7e, 0x67, 0xc8, 0x07, 0xb9, 0x46, 0xa3, 0x37,
0xbe, 0xe8, 0x94, 0x26, 0x74, 0x27, 0x88, 0x59, 0xe1, 0x32, 0x92, 0xfb,
};
CheckHmacTestVector(key, message, Digest::SHA_2_256, make_string(sha_256_expected));
if (SecLevel() != SecurityLevel::STRONGBOX) {
CheckHmacTestVector(key, message, Digest::SHA_2_224, make_string(sha_224_expected));
CheckHmacTestVector(key, message, Digest::SHA_2_384, make_string(sha_384_expected));
CheckHmacTestVector(key, message, Digest::SHA_2_512, make_string(sha_512_expected));
}
}
/*
* SigningOperationsTest.HmacRfc4231TestCase5
*
* Validates against the test vectors from RFC 4231 test case 5.
*/
TEST_P(SigningOperationsTest, HmacRfc4231TestCase5) {
string key(20, 0x0c);
string message = "Test With Truncation";
uint8_t sha_224_expected[] = {
0x0e, 0x2a, 0xea, 0x68, 0xa9, 0x0c, 0x8d, 0x37,
0xc9, 0x88, 0xbc, 0xdb, 0x9f, 0xca, 0x6f, 0xa8,
};
uint8_t sha_256_expected[] = {
0xa3, 0xb6, 0x16, 0x74, 0x73, 0x10, 0x0e, 0xe0,
0x6e, 0x0c, 0x79, 0x6c, 0x29, 0x55, 0x55, 0x2b,
};
uint8_t sha_384_expected[] = {
0x3a, 0xbf, 0x34, 0xc3, 0x50, 0x3b, 0x2a, 0x23,
0xa4, 0x6e, 0xfc, 0x61, 0x9b, 0xae, 0xf8, 0x97,
};
uint8_t sha_512_expected[] = {
0x41, 0x5f, 0xad, 0x62, 0x71, 0x58, 0x0a, 0x53,
0x1d, 0x41, 0x79, 0xbc, 0x89, 0x1d, 0x87, 0xa6,
};
CheckHmacTestVector(key, message, Digest::SHA_2_256, make_string(sha_256_expected));
if (SecLevel() != SecurityLevel::STRONGBOX) {
CheckHmacTestVector(key, message, Digest::SHA_2_224, make_string(sha_224_expected));
CheckHmacTestVector(key, message, Digest::SHA_2_384, make_string(sha_384_expected));
CheckHmacTestVector(key, message, Digest::SHA_2_512, make_string(sha_512_expected));
}
}
INSTANTIATE_KEYMINT_AIDL_TEST(SigningOperationsTest);
typedef KeyMintAidlTestBase VerificationOperationsTest;
/*
* VerificationOperationsTest.RsaSuccess
*
* Verifies that a simple RSA signature/verification sequence succeeds.
*/
TEST_P(VerificationOperationsTest, RsaSuccess) {
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.Authorization(TAG_NO_AUTH_REQUIRED)
.RsaSigningKey(2048, 65537)
.Digest(Digest::NONE)
.Padding(PaddingMode::NONE)
.SetDefaultValidity()));
string message = "12345678901234567890123456789012";
string signature = SignMessage(
message, AuthorizationSetBuilder().Digest(Digest::NONE).Padding(PaddingMode::NONE));
VerifyMessage(message, signature,
AuthorizationSetBuilder().Digest(Digest::NONE).Padding(PaddingMode::NONE));
}
/*
* VerificationOperationsTest.RsaSuccess
*
* Verifies RSA signature/verification for all padding modes and digests.
*/
TEST_P(VerificationOperationsTest, RsaAllPaddingsAndDigests) {
auto authorizations = AuthorizationSetBuilder()
.Authorization(TAG_NO_AUTH_REQUIRED)
.RsaSigningKey(2048, 65537)
.Digest(ValidDigests(true /* withNone */, true /* withMD5 */))
.Padding(PaddingMode::NONE)
.Padding(PaddingMode::RSA_PSS)
.Padding(PaddingMode::RSA_PKCS1_1_5_SIGN)
.SetDefaultValidity();
ASSERT_EQ(ErrorCode::OK, GenerateKey(authorizations));
string message(128, 'a');
string corrupt_message(message);
++corrupt_message[corrupt_message.size() / 2];
for (auto padding :
{PaddingMode::NONE, PaddingMode::RSA_PSS, PaddingMode::RSA_PKCS1_1_5_SIGN}) {
for (auto digest : ValidDigests(true /* withNone */, true /* withMD5 */)) {
if (padding == PaddingMode::NONE && digest != Digest::NONE) {
// Digesting only makes sense with padding.
continue;
}
if (padding == PaddingMode::RSA_PSS && digest == Digest::NONE) {
// PSS requires digesting.
continue;
}
string signature =
SignMessage(message, AuthorizationSetBuilder().Digest(digest).Padding(padding));
VerifyMessage(message, signature,
AuthorizationSetBuilder().Digest(digest).Padding(padding));
/* TODO(seleneh) add exportkey tests back later when we have decided on
* the new api.
if (digest != Digest::NONE) {
// Verify with OpenSSL.
vector<uint8_t> pubkey;
ASSERT_EQ(ErrorCode::OK, ExportKey(KeyFormat::X509, &pubkey));
const uint8_t* p = pubkey.data();
EVP_PKEY_Ptr pkey(d2i_PUBKEY(nullptr, &p, pubkey.size()));
ASSERT_TRUE(pkey.get());
EVP_MD_CTX digest_ctx;
EVP_MD_CTX_init(&digest_ctx);
EVP_PKEY_CTX* pkey_ctx;
const EVP_MD* md = openssl_digest(digest);
ASSERT_NE(md, nullptr);
EXPECT_EQ(1, EVP_DigestVerifyInit(&digest_ctx, &pkey_ctx, md,
nullptr, pkey.get()));
switch (padding) {
case PaddingMode::RSA_PSS:
EXPECT_GT(EVP_PKEY_CTX_set_rsa_padding(pkey_ctx,
RSA_PKCS1_PSS_PADDING), 0); EXPECT_GT(EVP_PKEY_CTX_set_rsa_pss_saltlen(pkey_ctx,
EVP_MD_size(md)), 0); break; case PaddingMode::RSA_PKCS1_1_5_SIGN:
// PKCS1 is the default; don't need to set anything.
break;
default:
FAIL();
break;
}
EXPECT_EQ(1, EVP_DigestVerifyUpdate(&digest_ctx, message.data(),
message.size())); EXPECT_EQ(1, EVP_DigestVerifyFinal(&digest_ctx,
reinterpret_cast<const
uint8_t*>(signature.data()), signature.size())); EVP_MD_CTX_cleanup(&digest_ctx);
}
*/
// Corrupt signature shouldn't verify.
string corrupt_signature(signature);
++corrupt_signature[corrupt_signature.size() / 2];
EXPECT_EQ(ErrorCode::OK,
Begin(KeyPurpose::VERIFY,
AuthorizationSetBuilder().Digest(digest).Padding(padding)));
string result;
EXPECT_EQ(ErrorCode::VERIFICATION_FAILED, Finish(message, corrupt_signature, &result));
// Corrupt message shouldn't verify
EXPECT_EQ(ErrorCode::OK,
Begin(KeyPurpose::VERIFY,
AuthorizationSetBuilder().Digest(digest).Padding(padding)));
EXPECT_EQ(ErrorCode::VERIFICATION_FAILED, Finish(corrupt_message, signature, &result));
}
}
}
/*
* VerificationOperationsTest.RsaSuccess
*
* Verifies ECDSA signature/verification for all digests and curves.
*/
TEST_P(VerificationOperationsTest, EcdsaAllDigestsAndCurves) {
auto digests = ValidDigests(true /* withNone */, false /* withMD5 */);
string message = "1234567890";
string corrupt_message = "2234567890";
for (auto curve : ValidCurves()) {
ErrorCode error = GenerateKey(AuthorizationSetBuilder()
.Authorization(TAG_NO_AUTH_REQUIRED)
.EcdsaSigningKey(curve)
.Digest(digests)
.SetDefaultValidity());
EXPECT_EQ(ErrorCode::OK, error) << "Failed to generate key for EC curve " << curve;
if (error != ErrorCode::OK) {
continue;
}
for (auto digest : digests) {
string signature = SignMessage(message, AuthorizationSetBuilder().Digest(digest));
VerifyMessage(message, signature, AuthorizationSetBuilder().Digest(digest));
/* TODO(seleneh) add exportkey tests back later when we have decided on
* the new api.
// Verify with OpenSSL
if (digest != Digest::NONE) {
vector<uint8_t> pubkey;
ASSERT_EQ(ErrorCode::OK, ExportKey(KeyFormat::X509, &pubkey))
<< curve << ' ' << digest;
const uint8_t* p = pubkey.data();
EVP_PKEY_Ptr pkey(d2i_PUBKEY(nullptr, &p, pubkey.size()));
ASSERT_TRUE(pkey.get());
EVP_MD_CTX digest_ctx;
EVP_MD_CTX_init(&digest_ctx);
EVP_PKEY_CTX* pkey_ctx;
const EVP_MD* md = openssl_digest(digest);
EXPECT_EQ(1, EVP_DigestVerifyInit(&digest_ctx, &pkey_ctx, md,
nullptr, pkey.get()))
<< curve << ' ' << digest;
EXPECT_EQ(1, EVP_DigestVerifyUpdate(&digest_ctx, message.data(),
message.size()))
<< curve << ' ' << digest;
EXPECT_EQ(1,
EVP_DigestVerifyFinal(&digest_ctx,
reinterpret_cast<const
uint8_t*>(signature.data()), signature.size()))
<< curve << ' ' << digest;
EVP_MD_CTX_cleanup(&digest_ctx);
}
*/
// Corrupt signature shouldn't verify.
string corrupt_signature(signature);
++corrupt_signature[corrupt_signature.size() / 2];
EXPECT_EQ(ErrorCode::OK,
Begin(KeyPurpose::VERIFY, AuthorizationSetBuilder().Digest(digest)))
<< curve << ' ' << digest;
string result;
EXPECT_EQ(ErrorCode::VERIFICATION_FAILED, Finish(message, corrupt_signature, &result))
<< curve << ' ' << digest;
// Corrupt message shouldn't verify
EXPECT_EQ(ErrorCode::OK,
Begin(KeyPurpose::VERIFY, AuthorizationSetBuilder().Digest(digest)))
<< curve << ' ' << digest;
EXPECT_EQ(ErrorCode::VERIFICATION_FAILED, Finish(corrupt_message, signature, &result))
<< curve << ' ' << digest;
}
auto rc = DeleteKey();
ASSERT_TRUE(rc == ErrorCode::OK || rc == ErrorCode::UNIMPLEMENTED);
}
}
/*
* VerificationOperationsTest.HmacSigningKeyCannotVerify
*
* Verifies HMAC signing and verification, but that a signing key cannot be used to verify.
*/
TEST_P(VerificationOperationsTest, HmacSigningKeyCannotVerify) {
string key_material = "HelloThisIsAKey";
vector<uint8_t> signing_key, verification_key;
vector<KeyCharacteristics> signing_key_chars, verification_key_chars;
EXPECT_EQ(ErrorCode::OK,
ImportKey(AuthorizationSetBuilder()
.Authorization(TAG_NO_AUTH_REQUIRED)
.Authorization(TAG_ALGORITHM, Algorithm::HMAC)
.Authorization(TAG_PURPOSE, KeyPurpose::SIGN)
.Digest(Digest::SHA_2_256)
.Authorization(TAG_MIN_MAC_LENGTH, 160),
KeyFormat::RAW, key_material, &signing_key, &signing_key_chars));
EXPECT_EQ(ErrorCode::OK,
ImportKey(AuthorizationSetBuilder()
.Authorization(TAG_NO_AUTH_REQUIRED)
.Authorization(TAG_ALGORITHM, Algorithm::HMAC)
.Authorization(TAG_PURPOSE, KeyPurpose::VERIFY)
.Digest(Digest::SHA_2_256)
.Authorization(TAG_MIN_MAC_LENGTH, 160),
KeyFormat::RAW, key_material, &verification_key, &verification_key_chars));
string message = "This is a message.";
string signature = SignMessage(
signing_key, message,
AuthorizationSetBuilder().Digest(Digest::SHA_2_256).Authorization(TAG_MAC_LENGTH, 160));
// Signing key should not work.
AuthorizationSet out_params;
EXPECT_EQ(ErrorCode::INCOMPATIBLE_PURPOSE,
Begin(KeyPurpose::VERIFY, signing_key,
AuthorizationSetBuilder().Digest(Digest::SHA_2_256), &out_params));
// Verification key should work.
VerifyMessage(verification_key, message, signature,
AuthorizationSetBuilder().Digest(Digest::SHA_2_256));
CheckedDeleteKey(&signing_key);
CheckedDeleteKey(&verification_key);
}
INSTANTIATE_KEYMINT_AIDL_TEST(VerificationOperationsTest);
typedef KeyMintAidlTestBase ExportKeyTest;
/*
* ExportKeyTest.RsaUnsupportedKeyFormat
*
* Verifies that attempting to export RSA keys in PKCS#8 format fails with the correct error.
*/
// TODO(seleneh) add ExportKey to GenerateKey
// check result
class ImportKeyTest : public KeyMintAidlTestBase {
public:
template <TagType tag_type, Tag tag, typename ValueT>
void CheckCryptoParam(TypedTag<tag_type, tag> ttag, ValueT expected) {
SCOPED_TRACE("CheckCryptoParam");
for (auto& entry : key_characteristics_) {
if (entry.securityLevel == SecLevel()) {
EXPECT_TRUE(contains(entry.authorizations, ttag, expected))
<< "Tag " << tag << " with value " << expected
<< " not found at security level" << entry.securityLevel;
} else {
EXPECT_FALSE(contains(entry.authorizations, ttag, expected))
<< "Tag " << tag << " found at security level " << entry.securityLevel;
}
}
}
void CheckOrigin() {
SCOPED_TRACE("CheckOrigin");
// Origin isn't a crypto param, but it always lives with them.
return CheckCryptoParam(TAG_ORIGIN, KeyOrigin::IMPORTED);
}
};
/*
* ImportKeyTest.RsaSuccess
*
* Verifies that importing and using an RSA key pair works correctly.
*/
TEST_P(ImportKeyTest, RsaSuccess) {
ASSERT_EQ(ErrorCode::OK, ImportKey(AuthorizationSetBuilder()
.Authorization(TAG_NO_AUTH_REQUIRED)
.RsaSigningKey(1024, 65537)
.Digest(Digest::SHA_2_256)
.Padding(PaddingMode::RSA_PSS)
.SetDefaultValidity(),
KeyFormat::PKCS8, rsa_key));
CheckCryptoParam(TAG_ALGORITHM, Algorithm::RSA);
CheckCryptoParam(TAG_KEY_SIZE, 1024U);
CheckCryptoParam(TAG_RSA_PUBLIC_EXPONENT, 65537U);
CheckCryptoParam(TAG_DIGEST, Digest::SHA_2_256);
CheckCryptoParam(TAG_PADDING, PaddingMode::RSA_PSS);
CheckOrigin();
string message(1024 / 8, 'a');
auto params = AuthorizationSetBuilder().Digest(Digest::SHA_2_256).Padding(PaddingMode::RSA_PSS);
string signature = SignMessage(message, params);
VerifyMessage(message, signature, params);
}
/*
* ImportKeyTest.RsaKeySizeMismatch
*
* Verifies that importing an RSA key pair with a size that doesn't match the key fails in the
* correct way.
*/
TEST_P(ImportKeyTest, RsaKeySizeMismatch) {
ASSERT_EQ(ErrorCode::IMPORT_PARAMETER_MISMATCH,
ImportKey(AuthorizationSetBuilder()
.RsaSigningKey(2048 /* Doesn't match key */, 65537)
.Digest(Digest::NONE)
.Padding(PaddingMode::NONE)
.SetDefaultValidity(),
KeyFormat::PKCS8, rsa_key));
}
/*
* ImportKeyTest.RsaPublicExponentMismatch
*
* Verifies that importing an RSA key pair with a public exponent that doesn't match the key
* fails in the correct way.
*/
TEST_P(ImportKeyTest, RsaPublicExponentMismatch) {
ASSERT_EQ(ErrorCode::IMPORT_PARAMETER_MISMATCH,
ImportKey(AuthorizationSetBuilder()
.RsaSigningKey(1024, 3 /* Doesn't match key */)
.Digest(Digest::NONE)
.Padding(PaddingMode::NONE)
.SetDefaultValidity(),
KeyFormat::PKCS8, rsa_key));
}
/*
* ImportKeyTest.EcdsaSuccess
*
* Verifies that importing and using an ECDSA P-256 key pair works correctly.
*/
TEST_P(ImportKeyTest, EcdsaSuccess) {
ASSERT_EQ(ErrorCode::OK, ImportKey(AuthorizationSetBuilder()
.Authorization(TAG_NO_AUTH_REQUIRED)
.EcdsaSigningKey(256)
.Digest(Digest::SHA_2_256)
.SetDefaultValidity(),
KeyFormat::PKCS8, ec_256_key));
CheckCryptoParam(TAG_ALGORITHM, Algorithm::EC);
CheckCryptoParam(TAG_KEY_SIZE, 256U);
CheckCryptoParam(TAG_DIGEST, Digest::SHA_2_256);
CheckCryptoParam(TAG_EC_CURVE, EcCurve::P_256);
CheckOrigin();
string message(32, 'a');
auto params = AuthorizationSetBuilder().Digest(Digest::SHA_2_256);
string signature = SignMessage(message, params);
VerifyMessage(message, signature, params);
}
/*
* ImportKeyTest.EcdsaP256RFC5915Success
*
* Verifies that importing and using an ECDSA P-256 key pair encoded using RFC5915 works
* correctly.
*/
TEST_P(ImportKeyTest, EcdsaP256RFC5915Success) {
ASSERT_EQ(ErrorCode::OK, ImportKey(AuthorizationSetBuilder()
.Authorization(TAG_NO_AUTH_REQUIRED)
.EcdsaSigningKey(256)
.Digest(Digest::SHA_2_256)
.SetDefaultValidity(),
KeyFormat::PKCS8, ec_256_key_rfc5915));
CheckCryptoParam(TAG_ALGORITHM, Algorithm::EC);
CheckCryptoParam(TAG_KEY_SIZE, 256U);
CheckCryptoParam(TAG_DIGEST, Digest::SHA_2_256);
CheckCryptoParam(TAG_EC_CURVE, EcCurve::P_256);
CheckOrigin();
string message(32, 'a');
auto params = AuthorizationSetBuilder().Digest(Digest::SHA_2_256);
string signature = SignMessage(message, params);
VerifyMessage(message, signature, params);
}
/*
* ImportKeyTest.EcdsaP256SEC1Success
*
* Verifies that importing and using an ECDSA P-256 key pair encoded using SEC1 works correctly.
*/
TEST_P(ImportKeyTest, EcdsaP256SEC1Success) {
ASSERT_EQ(ErrorCode::OK, ImportKey(AuthorizationSetBuilder()
.Authorization(TAG_NO_AUTH_REQUIRED)
.EcdsaSigningKey(256)
.Digest(Digest::SHA_2_256)
.SetDefaultValidity(),
KeyFormat::PKCS8, ec_256_key_sec1));
CheckCryptoParam(TAG_ALGORITHM, Algorithm::EC);
CheckCryptoParam(TAG_KEY_SIZE, 256U);
CheckCryptoParam(TAG_DIGEST, Digest::SHA_2_256);
CheckCryptoParam(TAG_EC_CURVE, EcCurve::P_256);
CheckOrigin();
string message(32, 'a');
auto params = AuthorizationSetBuilder().Digest(Digest::SHA_2_256);
string signature = SignMessage(message, params);
VerifyMessage(message, signature, params);
}
/*
* ImportKeyTest.Ecdsa521Success
*
* Verifies that importing and using an ECDSA P-521 key pair works correctly.
*/
TEST_P(ImportKeyTest, Ecdsa521Success) {
if (SecLevel() == SecurityLevel::STRONGBOX) return;
ASSERT_EQ(ErrorCode::OK, ImportKey(AuthorizationSetBuilder()
.Authorization(TAG_NO_AUTH_REQUIRED)
.EcdsaSigningKey(521)
.Digest(Digest::SHA_2_256)
.SetDefaultValidity(),
KeyFormat::PKCS8, ec_521_key));
CheckCryptoParam(TAG_ALGORITHM, Algorithm::EC);
CheckCryptoParam(TAG_KEY_SIZE, 521U);
CheckCryptoParam(TAG_DIGEST, Digest::SHA_2_256);
CheckCryptoParam(TAG_EC_CURVE, EcCurve::P_521);
CheckOrigin();
string message(32, 'a');
auto params = AuthorizationSetBuilder().Digest(Digest::SHA_2_256);
string signature = SignMessage(message, params);
VerifyMessage(message, signature, params);
}
/*
* ImportKeyTest.EcdsaSizeMismatch
*
* Verifies that importing an ECDSA key pair with a size that doesn't match the key fails in the
* correct way.
*/
TEST_P(ImportKeyTest, EcdsaSizeMismatch) {
ASSERT_EQ(ErrorCode::IMPORT_PARAMETER_MISMATCH,
ImportKey(AuthorizationSetBuilder()
.EcdsaSigningKey(224 /* Doesn't match key */)
.Digest(Digest::NONE)
.SetDefaultValidity(),
KeyFormat::PKCS8, ec_256_key));
}
/*
* ImportKeyTest.EcdsaCurveMismatch
*
* Verifies that importing an ECDSA key pair with a curve that doesn't match the key fails in
* the correct way.
*/
TEST_P(ImportKeyTest, EcdsaCurveMismatch) {
ASSERT_EQ(ErrorCode::IMPORT_PARAMETER_MISMATCH,
ImportKey(AuthorizationSetBuilder()
.EcdsaSigningKey(EcCurve::P_224 /* Doesn't match key */)
.Digest(Digest::NONE)
.SetDefaultValidity(),
KeyFormat::PKCS8, ec_256_key));
}
/*
* ImportKeyTest.AesSuccess
*
* Verifies that importing and using an AES key works.
*/
TEST_P(ImportKeyTest, AesSuccess) {
string key = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
ASSERT_EQ(ErrorCode::OK, ImportKey(AuthorizationSetBuilder()
.Authorization(TAG_NO_AUTH_REQUIRED)
.AesEncryptionKey(key.size() * 8)
.EcbMode()
.Padding(PaddingMode::PKCS7),
KeyFormat::RAW, key));
CheckCryptoParam(TAG_ALGORITHM, Algorithm::AES);
CheckCryptoParam(TAG_KEY_SIZE, 128U);
CheckCryptoParam(TAG_PADDING, PaddingMode::PKCS7);
CheckCryptoParam(TAG_BLOCK_MODE, BlockMode::ECB);
CheckOrigin();
string message = "Hello World!";
auto params = AuthorizationSetBuilder().BlockMode(BlockMode::ECB).Padding(PaddingMode::PKCS7);
string ciphertext = EncryptMessage(message, params);
string plaintext = DecryptMessage(ciphertext, params);
EXPECT_EQ(message, plaintext);
}
/*
* ImportKeyTest.AesSuccess
*
* Verifies that importing and using an HMAC key works.
*/
TEST_P(ImportKeyTest, HmacKeySuccess) {
string key = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
ASSERT_EQ(ErrorCode::OK, ImportKey(AuthorizationSetBuilder()
.Authorization(TAG_NO_AUTH_REQUIRED)
.HmacKey(key.size() * 8)
.Digest(Digest::SHA_2_256)
.Authorization(TAG_MIN_MAC_LENGTH, 256),
KeyFormat::RAW, key));
CheckCryptoParam(TAG_ALGORITHM, Algorithm::HMAC);
CheckCryptoParam(TAG_KEY_SIZE, 128U);
CheckCryptoParam(TAG_DIGEST, Digest::SHA_2_256);
CheckOrigin();
string message = "Hello World!";
string signature = MacMessage(message, Digest::SHA_2_256, 256);
VerifyMessage(message, signature, AuthorizationSetBuilder().Digest(Digest::SHA_2_256));
}
INSTANTIATE_KEYMINT_AIDL_TEST(ImportKeyTest);
auto wrapped_key = hex2str(
"3082017902010004820100934bf94e2aa28a3f83c9f79297250262fbe3276b5a1c91159bbfa3ef8957aac8"
"4b59b30b455a79c2973480823d8b3863c3deef4a8e243590268d80e18751a0e130f67ce6a1ace9f79b95e0"
"97474febc981195b1d13a69086c0863f66a7b7fdb48792227b1ac5e2489febdf087ab5486483033a6f001c"
"a5d1ec1e27f5c30f4cec2642074a39ae68aee552e196627a8e3d867e67a8c01b11e75f13cca0a97ab668b5"
"0cda07a8ecb7cd8e3dd7009c9636534f6f239cffe1fc8daa466f78b676c7119efb96bce4e69ca2a25d0b34"
"ed9c3ff999b801597d5220e307eaa5bee507fb94d1fa69f9e519b2de315bac92c36f2ea1fa1df4478c0dde"
"deae8c70e0233cd098040cd796b02c370f1fa4cc0124f1302e0201033029a1083106020100020101a20302"
"0120a30402020100a4053103020101a6053103020140bf83770205000420ccd540855f833a5e1480bfd2d3"
"6faf3aeee15df5beabe2691bc82dde2a7aa910041064c9f689c60ff6223ab6e6999e0eb6e5");
auto wrapped_key_masked = hex2str(
"3082017902010004820100aad93ed5924f283b4bb5526fbe7a1412f9d9749ec30db9062b29e574a8546f33"
"c88732452f5b8e6a391ee76c39ed1712c61d8df6213dec1cffbc17a8c6d04c7b30893d8daa9b2015213e21"
"946821553207f8f9931c4caba23ed3bee28b36947e47f10e0a5c3dc51c988a628daad3e5e1f4005e79c2d5"
"a96c284b4b8d7e4948f331e5b85dd5a236f85579f3ea1d1b848487470bdb0ab4f81a12bee42c99fe0df4be"
"e3759453e69ad1d68a809ce06b949f7694a990429b2fe81e066ff43e56a21602db70757922a4bcc23ab89f"
"1e35da77586775f423e519c2ea394caf48a28d0c8020f1dcf6b3a68ec246f615ae96dae9a079b1f6eb9590"
"33c1af5c125fd94168040c6d9721d08589581ab49204a3302e0201033029a1083106020100020101a20302"
"0120a30402020100a4053103020101a6053103020140bf83770205000420a61c6e247e25b3e6e69aa78eb0"
"3c2d4ac20d1f99a9a024a76f35c8e2cab9b68d04102560c70109ae67c030f00b98b512a670");
auto wrapping_key = hex2str(
"308204be020100300d06092a864886f70d0101010500048204a8308204a40201000282010100aec367931d"
"8900ce56b0067f7d70e1fc653f3f34d194c1fed50018fb43db937b06e673a837313d56b1c725150a3fef86"
"acbddc41bb759c2854eae32d35841efb5c18d82bc90a1cb5c1d55adf245b02911f0b7cda88c421ff0ebafe"
"7c0d23be312d7bd5921ffaea1347c157406fef718f682643e4e5d33c6703d61c0cf7ac0bf4645c11f5c137"
"4c3886427411c449796792e0bef75dec858a2123c36753e02a95a96d7c454b504de385a642e0dfc3e60ac3"
"a7ee4991d0d48b0172a95f9536f02ba13cecccb92b727db5c27e5b2f5cec09600b286af5cf14c42024c61d"
"dfe71c2a8d7458f185234cb00e01d282f10f8fc6721d2aed3f4833cca2bd8fa62821dd5502030100010282"
"0100431447b6251908112b1ee76f99f3711a52b6630960046c2de70de188d833f8b8b91e4d785caeeeaf4f"
"0f74414e2cda40641f7fe24f14c67a88959bdb27766df9e710b630a03adc683b5d2c43080e52bee71e9eae"
"b6de297a5fea1072070d181c822bccff087d63c940ba8a45f670feb29fb4484d1c95e6d2579ba02aae0a00"
"900c3ebf490e3d2cd7ee8d0e20c536e4dc5a5097272888cddd7e91f228b1c4d7474c55b8fcd618c4a957bb"
"ddd5ad7407cc312d8d98a5caf7e08f4a0d6b45bb41c652659d5a5ba05b663737a8696281865ba20fbdd7f8"
"51e6c56e8cbe0ddbbf24dc03b2d2cb4c3d540fb0af52e034a2d06698b128e5f101e3b51a34f8d8b4f86181"
"02818100de392e18d682c829266cc3454e1d6166242f32d9a1d10577753e904ea7d08bff841be5bac82a16"
"4c5970007047b8c517db8f8f84e37bd5988561bdf503d4dc2bdb38f885434ae42c355f725c9a60f91f0788"
"e1f1a97223b524b5357fdf72e2f696bab7d78e32bf92ba8e1864eab1229e91346130748a6e3c124f9149d7"
"1c743502818100c95387c0f9d35f137b57d0d65c397c5e21cc251e47008ed62a542409c8b6b6ac7f8967b3"
"863ca645fcce49582a9aa17349db6c4a95affdae0dae612e1afac99ed39a2d934c880440aed8832f984316"
"3a47f27f392199dc1202f9a0f9bd08308007cb1e4e7f58309366a7de25f7c3c9b880677c068e1be936e812"
"88815252a8a102818057ff8ca1895080b2cae486ef0adfd791fb0235c0b8b36cd6c136e52e4085f4ea5a06"
"3212a4f105a3764743e53281988aba073f6e0027298e1c4378556e0efca0e14ece1af76ad0b030f27af6f0"
"ab35fb73a060d8b1a0e142fa2647e93b32e36d8282ae0a4de50ab7afe85500a16f43a64719d6e2b9439823"
"719cd08bcd03178102818100ba73b0bb28e3f81e9bd1c568713b101241acc607976c4ddccc90e65b6556ca"
"31516058f92b6e09f3b160ff0e374ec40d78ae4d4979fde6ac06a1a400c61dd31254186af30b22c10582a8"
"a43e34fe949c5f3b9755bae7baa7b7b7a6bd03b38cef55c86885fc6c1978b9cee7ef33da507c9df6b9277c"
"ff1e6aaa5d57aca528466102818100c931617c77829dfb1270502be9195c8f2830885f57dba869536811e6"
"864236d0c4736a0008a145af36b8357a7c3d139966d04c4e00934ea1aede3bb6b8ec841dc95e3f579751e2"
"bfdfe27ae778983f959356210723287b0affcc9f727044d48c373f1babde0724fa17a4fd4da0902c7c9b9b"
"f27ba61be6ad02dfddda8f4e6822");
string zero_masking_key =
hex2str("0000000000000000000000000000000000000000000000000000000000000000");
string masking_key = hex2str("D796B02C370F1FA4CC0124F14EC8CBEBE987E825246265050F399A51FD477DFC");
class ImportWrappedKeyTest : public KeyMintAidlTestBase {};
TEST_P(ImportWrappedKeyTest, Success) {
auto wrapping_key_desc = AuthorizationSetBuilder()
.RsaEncryptionKey(2048, 65537)
.Digest(Digest::SHA_2_256)
.Padding(PaddingMode::RSA_OAEP)
.Authorization(TAG_PURPOSE, KeyPurpose::WRAP_KEY)
.SetDefaultValidity();
ASSERT_EQ(ErrorCode::OK,
ImportWrappedKey(wrapped_key, wrapping_key, wrapping_key_desc, zero_masking_key,
AuthorizationSetBuilder()
.Digest(Digest::SHA_2_256)
.Padding(PaddingMode::RSA_OAEP)));
string message = "Hello World!";
auto params = AuthorizationSetBuilder().BlockMode(BlockMode::ECB).Padding(PaddingMode::PKCS7);
string ciphertext = EncryptMessage(message, params);
string plaintext = DecryptMessage(ciphertext, params);
EXPECT_EQ(message, plaintext);
}
TEST_P(ImportWrappedKeyTest, SuccessMasked) {
auto wrapping_key_desc = AuthorizationSetBuilder()
.RsaEncryptionKey(2048, 65537)
.Digest(Digest::SHA_2_256)
.Padding(PaddingMode::RSA_OAEP)
.Authorization(TAG_PURPOSE, KeyPurpose::WRAP_KEY)
.SetDefaultValidity();
ASSERT_EQ(ErrorCode::OK,
ImportWrappedKey(wrapped_key_masked, wrapping_key, wrapping_key_desc, masking_key,
AuthorizationSetBuilder()
.Digest(Digest::SHA_2_256)
.Padding(PaddingMode::RSA_OAEP)));
}
TEST_P(ImportWrappedKeyTest, WrongMask) {
auto wrapping_key_desc = AuthorizationSetBuilder()
.RsaEncryptionKey(2048, 65537)
.Digest(Digest::SHA_2_256)
.Padding(PaddingMode::RSA_OAEP)
.Authorization(TAG_PURPOSE, KeyPurpose::WRAP_KEY)
.SetDefaultValidity();
ASSERT_EQ(
ErrorCode::VERIFICATION_FAILED,
ImportWrappedKey(wrapped_key_masked, wrapping_key, wrapping_key_desc, zero_masking_key,
AuthorizationSetBuilder()
.Digest(Digest::SHA_2_256)
.Padding(PaddingMode::RSA_OAEP)));
}
TEST_P(ImportWrappedKeyTest, WrongPurpose) {
auto wrapping_key_desc = AuthorizationSetBuilder()
.RsaEncryptionKey(2048, 65537)
.Digest(Digest::SHA_2_256)
.Padding(PaddingMode::RSA_OAEP)
.SetDefaultValidity();
ASSERT_EQ(
ErrorCode::INCOMPATIBLE_PURPOSE,
ImportWrappedKey(wrapped_key_masked, wrapping_key, wrapping_key_desc, zero_masking_key,
AuthorizationSetBuilder()
.Digest(Digest::SHA_2_256)
.Padding(PaddingMode::RSA_OAEP)));
}
INSTANTIATE_KEYMINT_AIDL_TEST(ImportWrappedKeyTest);
typedef KeyMintAidlTestBase EncryptionOperationsTest;
/*
* EncryptionOperationsTest.RsaNoPaddingSuccess
*
* Verifies that raw RSA encryption works.
*/
TEST_P(EncryptionOperationsTest, RsaNoPaddingSuccess) {
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.Authorization(TAG_NO_AUTH_REQUIRED)
.RsaEncryptionKey(2048, 65537)
.Padding(PaddingMode::NONE)
.SetDefaultValidity()));
string message = string(2048 / 8, 'a');
auto params = AuthorizationSetBuilder().Padding(PaddingMode::NONE);
string ciphertext1 = EncryptMessage(message, params);
EXPECT_EQ(2048U / 8, ciphertext1.size());
string ciphertext2 = EncryptMessage(message, params);
EXPECT_EQ(2048U / 8, ciphertext2.size());
// Unpadded RSA is deterministic
EXPECT_EQ(ciphertext1, ciphertext2);
}
/*
* EncryptionOperationsTest.RsaNoPaddingShortMessage
*
* Verifies that raw RSA encryption of short messages works.
*/
TEST_P(EncryptionOperationsTest, RsaNoPaddingShortMessage) {
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.Authorization(TAG_NO_AUTH_REQUIRED)
.RsaEncryptionKey(2048, 65537)
.Padding(PaddingMode::NONE)
.SetDefaultValidity()));
string message = "1";
auto params = AuthorizationSetBuilder().Padding(PaddingMode::NONE);
string ciphertext = EncryptMessage(message, params);
EXPECT_EQ(2048U / 8, ciphertext.size());
string expected_plaintext = string(2048U / 8 - 1, 0) + message;
string plaintext = DecryptMessage(ciphertext, params);
EXPECT_EQ(expected_plaintext, plaintext);
// Degenerate case, encrypting a numeric 1 yields 0x00..01 as the ciphertext.
message = static_cast<char>(1);
ciphertext = EncryptMessage(message, params);
EXPECT_EQ(2048U / 8, ciphertext.size());
EXPECT_EQ(ciphertext, string(2048U / 8 - 1, 0) + message);
}
/*
* EncryptionOperationsTest.RsaNoPaddingTooLong
*
* Verifies that raw RSA encryption of too-long messages fails in the expected way.
*/
TEST_P(EncryptionOperationsTest, RsaNoPaddingTooLong) {
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.Authorization(TAG_NO_AUTH_REQUIRED)
.RsaEncryptionKey(2048, 65537)
.Padding(PaddingMode::NONE)
.SetDefaultValidity()));
string message(2048 / 8 + 1, 'a');
auto params = AuthorizationSetBuilder().Padding(PaddingMode::NONE);
EXPECT_EQ(ErrorCode::OK, Begin(KeyPurpose::ENCRYPT, params));
string result;
EXPECT_EQ(ErrorCode::INVALID_INPUT_LENGTH, Finish(message, &result));
}
/*
* EncryptionOperationsTest.RsaNoPaddingTooLarge
*
* Verifies that raw RSA encryption of too-large (numerically) messages fails in the expected
* way.
*/
// TODO(seleneh) add RsaNoPaddingTooLarge test back after decided and implemented new
// version of ExportKey inside generateKey
/*
* EncryptionOperationsTest.RsaOaepSuccess
*
* Verifies that RSA-OAEP encryption operations work, with all digests.
*/
TEST_P(EncryptionOperationsTest, RsaOaepSuccess) {
auto digests = ValidDigests(false /* withNone */, true /* withMD5 */);
size_t key_size = 2048; // Need largish key for SHA-512 test.
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.Authorization(TAG_NO_AUTH_REQUIRED)
.RsaEncryptionKey(key_size, 65537)
.Padding(PaddingMode::RSA_OAEP)
.Digest(digests)
.SetDefaultValidity()));
string message = "Hello";
for (auto digest : digests) {
auto params = AuthorizationSetBuilder().Digest(digest).Padding(PaddingMode::RSA_OAEP);
string ciphertext1 = EncryptMessage(message, params);
if (HasNonfatalFailure()) std::cout << "-->" << digest << std::endl;
EXPECT_EQ(key_size / 8, ciphertext1.size());
string ciphertext2 = EncryptMessage(message, params);
EXPECT_EQ(key_size / 8, ciphertext2.size());
// OAEP randomizes padding so every result should be different (with astronomically high
// probability).
EXPECT_NE(ciphertext1, ciphertext2);
string plaintext1 = DecryptMessage(ciphertext1, params);
EXPECT_EQ(message, plaintext1) << "RSA-OAEP failed with digest " << digest;
string plaintext2 = DecryptMessage(ciphertext2, params);
EXPECT_EQ(message, plaintext2) << "RSA-OAEP failed with digest " << digest;
// Decrypting corrupted ciphertext should fail.
size_t offset_to_corrupt = random() % ciphertext1.size();
char corrupt_byte;
do {
corrupt_byte = static_cast<char>(random() % 256);
} while (corrupt_byte == ciphertext1[offset_to_corrupt]);
ciphertext1[offset_to_corrupt] = corrupt_byte;
EXPECT_EQ(ErrorCode::OK, Begin(KeyPurpose::DECRYPT, params));
string result;
EXPECT_EQ(ErrorCode::UNKNOWN_ERROR, Finish(ciphertext1, &result));
EXPECT_EQ(0U, result.size());
}
}
/*
* EncryptionOperationsTest.RsaOaepInvalidDigest
*
* Verifies that RSA-OAEP encryption operations fail in the correct way when asked to operate
* without a digest.
*/
TEST_P(EncryptionOperationsTest, RsaOaepInvalidDigest) {
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.Authorization(TAG_NO_AUTH_REQUIRED)
.RsaEncryptionKey(2048, 65537)
.Padding(PaddingMode::RSA_OAEP)
.Digest(Digest::NONE)
.SetDefaultValidity()));
string message = "Hello World!";
auto params = AuthorizationSetBuilder().Padding(PaddingMode::RSA_OAEP).Digest(Digest::NONE);
EXPECT_EQ(ErrorCode::INCOMPATIBLE_DIGEST, Begin(KeyPurpose::ENCRYPT, params));
}
/*
* EncryptionOperationsTest.RsaOaepInvalidDigest
*
* Verifies that RSA-OAEP encryption operations fail in the correct way when asked to decrypt
* with a different digest than was used to encrypt.
*/
TEST_P(EncryptionOperationsTest, RsaOaepDecryptWithWrongDigest) {
if (SecLevel() == SecurityLevel::STRONGBOX) return;
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.Authorization(TAG_NO_AUTH_REQUIRED)
.RsaEncryptionKey(1024, 65537)
.Padding(PaddingMode::RSA_OAEP)
.Digest(Digest::SHA_2_224, Digest::SHA_2_256)
.SetDefaultValidity()));
string message = "Hello World!";
string ciphertext = EncryptMessage(
message,
AuthorizationSetBuilder().Digest(Digest::SHA_2_224).Padding(PaddingMode::RSA_OAEP));
EXPECT_EQ(ErrorCode::OK, Begin(KeyPurpose::DECRYPT, AuthorizationSetBuilder()
.Digest(Digest::SHA_2_256)
.Padding(PaddingMode::RSA_OAEP)));
string result;
EXPECT_EQ(ErrorCode::UNKNOWN_ERROR, Finish(ciphertext, &result));
EXPECT_EQ(0U, result.size());
}
/*
* EncryptionOperationsTest.RsaOaepTooLarge
*
* Verifies that RSA-OAEP encryption operations fail in the correct way when asked to encrypt a
* too-large message.
*/
TEST_P(EncryptionOperationsTest, RsaOaepTooLarge) {
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.Authorization(TAG_NO_AUTH_REQUIRED)
.RsaEncryptionKey(2048, 65537)
.Padding(PaddingMode::RSA_OAEP)
.Digest(Digest::SHA_2_256)
.SetDefaultValidity()));
constexpr size_t digest_size = 256 /* SHA_2_256 */ / 8;
constexpr size_t oaep_overhead = 2 * digest_size + 2;
string message(2048 / 8 - oaep_overhead + 1, 'a');
EXPECT_EQ(ErrorCode::OK, Begin(KeyPurpose::ENCRYPT, AuthorizationSetBuilder()
.Padding(PaddingMode::RSA_OAEP)
.Digest(Digest::SHA_2_256)));
string result;
ErrorCode error = Finish(message, &result);
EXPECT_TRUE(error == ErrorCode::INVALID_INPUT_LENGTH || error == ErrorCode::INVALID_ARGUMENT);
EXPECT_EQ(0U, result.size());
}
/*
* EncryptionOperationsTest.RsaOaepWithMGFDigestSuccess
*
* Verifies that RSA-OAEP encryption operations work, with all SHA 256 digests and all type of MGF1
* digests.
*/
TEST_P(EncryptionOperationsTest, RsaOaepWithMGFDigestSuccess) {
auto digests = ValidDigests(false /* withNone */, true /* withMD5 */);
size_t key_size = 2048; // Need largish key for SHA-512 test.
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.OaepMGFDigest(digests)
.Authorization(TAG_NO_AUTH_REQUIRED)
.RsaEncryptionKey(key_size, 65537)
.Padding(PaddingMode::RSA_OAEP)
.Digest(Digest::SHA_2_256)
.SetDefaultValidity()));
string message = "Hello";
for (auto digest : digests) {
auto params = AuthorizationSetBuilder()
.Authorization(TAG_RSA_OAEP_MGF_DIGEST, digest)
.Digest(Digest::SHA_2_256)
.Padding(PaddingMode::RSA_OAEP);
string ciphertext1 = EncryptMessage(message, params);
if (HasNonfatalFailure()) std::cout << "-->" << digest << std::endl;
EXPECT_EQ(key_size / 8, ciphertext1.size());
string ciphertext2 = EncryptMessage(message, params);
EXPECT_EQ(key_size / 8, ciphertext2.size());
// OAEP randomizes padding so every result should be different (with astronomically high
// probability).
EXPECT_NE(ciphertext1, ciphertext2);
string plaintext1 = DecryptMessage(ciphertext1, params);
EXPECT_EQ(message, plaintext1) << "RSA-OAEP failed with digest " << digest;
string plaintext2 = DecryptMessage(ciphertext2, params);
EXPECT_EQ(message, plaintext2) << "RSA-OAEP failed with digest " << digest;
// Decrypting corrupted ciphertext should fail.
size_t offset_to_corrupt = random() % ciphertext1.size();
char corrupt_byte;
do {
corrupt_byte = static_cast<char>(random() % 256);
} while (corrupt_byte == ciphertext1[offset_to_corrupt]);
ciphertext1[offset_to_corrupt] = corrupt_byte;
EXPECT_EQ(ErrorCode::OK, Begin(KeyPurpose::DECRYPT, params));
string result;
EXPECT_EQ(ErrorCode::UNKNOWN_ERROR, Finish(ciphertext1, &result));
EXPECT_EQ(0U, result.size());
}
}
/*
* EncryptionOperationsTest.RsaOaepWithMGFIncompatibleDigest
*
* Verifies that RSA-OAEP encryption operations fail in the correct way when asked to operate
* with incompatible MGF digest.
*/
TEST_P(EncryptionOperationsTest, RsaOaepWithMGFIncompatibleDigest) {
ASSERT_EQ(ErrorCode::OK,
GenerateKey(AuthorizationSetBuilder()
.Authorization(TAG_RSA_OAEP_MGF_DIGEST, Digest::SHA_2_256)
.Authorization(TAG_NO_AUTH_REQUIRED)
.RsaEncryptionKey(2048, 65537)
.Padding(PaddingMode::RSA_OAEP)
.Digest(Digest::SHA_2_256)
.SetDefaultValidity()));
string message = "Hello World!";
auto params = AuthorizationSetBuilder()
.Padding(PaddingMode::RSA_OAEP)
.Digest(Digest::SHA_2_256)
.Authorization(TAG_RSA_OAEP_MGF_DIGEST, Digest::SHA_2_224);
EXPECT_EQ(ErrorCode::INCOMPATIBLE_MGF_DIGEST, Begin(KeyPurpose::ENCRYPT, params));
}
/*
* EncryptionOperationsTest.RsaOaepWithMGFUnsupportedDigest
*
* Verifies that RSA-OAEP encryption operations fail in the correct way when asked to operate
* with unsupported MGF digest.
*/
TEST_P(EncryptionOperationsTest, RsaOaepWithMGFUnsupportedDigest) {
ASSERT_EQ(ErrorCode::OK,
GenerateKey(AuthorizationSetBuilder()
.Authorization(TAG_RSA_OAEP_MGF_DIGEST, Digest::SHA_2_256)
.Authorization(TAG_NO_AUTH_REQUIRED)
.RsaEncryptionKey(2048, 65537)
.Padding(PaddingMode::RSA_OAEP)
.Digest(Digest::SHA_2_256)
.SetDefaultValidity()));
string message = "Hello World!";
auto params = AuthorizationSetBuilder()
.Padding(PaddingMode::RSA_OAEP)
.Digest(Digest::SHA_2_256)
.Authorization(TAG_RSA_OAEP_MGF_DIGEST, Digest::NONE);
EXPECT_EQ(ErrorCode::UNSUPPORTED_MGF_DIGEST, Begin(KeyPurpose::ENCRYPT, params));
}
/*
* EncryptionOperationsTest.RsaPkcs1Success
*
* Verifies that RSA PKCS encryption/decrypts works.
*/
TEST_P(EncryptionOperationsTest, RsaPkcs1Success) {
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.Authorization(TAG_NO_AUTH_REQUIRED)
.RsaEncryptionKey(2048, 65537)
.Padding(PaddingMode::RSA_PKCS1_1_5_ENCRYPT)
.SetDefaultValidity()));
string message = "Hello World!";
auto params = AuthorizationSetBuilder().Padding(PaddingMode::RSA_PKCS1_1_5_ENCRYPT);
string ciphertext1 = EncryptMessage(message, params);
EXPECT_EQ(2048U / 8, ciphertext1.size());
string ciphertext2 = EncryptMessage(message, params);
EXPECT_EQ(2048U / 8, ciphertext2.size());
// PKCS1 v1.5 randomizes padding so every result should be different.
EXPECT_NE(ciphertext1, ciphertext2);
string plaintext = DecryptMessage(ciphertext1, params);
EXPECT_EQ(message, plaintext);
// Decrypting corrupted ciphertext should fail.
size_t offset_to_corrupt = random() % ciphertext1.size();
char corrupt_byte;
do {
corrupt_byte = static_cast<char>(random() % 256);
} while (corrupt_byte == ciphertext1[offset_to_corrupt]);
ciphertext1[offset_to_corrupt] = corrupt_byte;
EXPECT_EQ(ErrorCode::OK, Begin(KeyPurpose::DECRYPT, params));
string result;
EXPECT_EQ(ErrorCode::UNKNOWN_ERROR, Finish(ciphertext1, &result));
EXPECT_EQ(0U, result.size());
}
/*
* EncryptionOperationsTest.RsaPkcs1TooLarge
*
* Verifies that RSA PKCS encryption fails in the correct way when the mssage is too large.
*/
TEST_P(EncryptionOperationsTest, RsaPkcs1TooLarge) {
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.Authorization(TAG_NO_AUTH_REQUIRED)
.RsaEncryptionKey(2048, 65537)
.Padding(PaddingMode::RSA_PKCS1_1_5_ENCRYPT)
.SetDefaultValidity()));
string message(2048 / 8 - 10, 'a');
auto params = AuthorizationSetBuilder().Padding(PaddingMode::RSA_PKCS1_1_5_ENCRYPT);
EXPECT_EQ(ErrorCode::OK, Begin(KeyPurpose::ENCRYPT, params));
string result;
ErrorCode error = Finish(message, &result);
EXPECT_TRUE(error == ErrorCode::INVALID_INPUT_LENGTH || error == ErrorCode::INVALID_ARGUMENT);
EXPECT_EQ(0U, result.size());
}
/*
* EncryptionOperationsTest.EcdsaEncrypt
*
* Verifies that attempting to use ECDSA keys to encrypt fails in the correct way.
*/
TEST_P(EncryptionOperationsTest, EcdsaEncrypt) {
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.Authorization(TAG_NO_AUTH_REQUIRED)
.EcdsaSigningKey(256)
.Digest(Digest::NONE)
.SetDefaultValidity()));
auto params = AuthorizationSetBuilder().Digest(Digest::NONE);
ASSERT_EQ(ErrorCode::UNSUPPORTED_PURPOSE, Begin(KeyPurpose::ENCRYPT, params));
ASSERT_EQ(ErrorCode::UNSUPPORTED_PURPOSE, Begin(KeyPurpose::DECRYPT, params));
}
/*
* EncryptionOperationsTest.HmacEncrypt
*
* Verifies that attempting to use HMAC keys to encrypt fails in the correct way.
*/
TEST_P(EncryptionOperationsTest, HmacEncrypt) {
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.Authorization(TAG_NO_AUTH_REQUIRED)
.HmacKey(128)
.Digest(Digest::SHA_2_256)
.Padding(PaddingMode::NONE)
.Authorization(TAG_MIN_MAC_LENGTH, 128)));
auto params = AuthorizationSetBuilder()
.Digest(Digest::SHA_2_256)
.Padding(PaddingMode::NONE)
.Authorization(TAG_MAC_LENGTH, 128);
ASSERT_EQ(ErrorCode::UNSUPPORTED_PURPOSE, Begin(KeyPurpose::ENCRYPT, params));
ASSERT_EQ(ErrorCode::UNSUPPORTED_PURPOSE, Begin(KeyPurpose::DECRYPT, params));
}
/*
* EncryptionOperationsTest.AesEcbRoundTripSuccess
*
* Verifies that AES ECB mode works.
*/
TEST_P(EncryptionOperationsTest, AesEcbRoundTripSuccess) {
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.Authorization(TAG_NO_AUTH_REQUIRED)
.AesEncryptionKey(128)
.Authorization(TAG_BLOCK_MODE, BlockMode::ECB)
.Padding(PaddingMode::NONE)));
ASSERT_GT(key_blob_.size(), 0U);
auto params = AuthorizationSetBuilder().BlockMode(BlockMode::ECB).Padding(PaddingMode::NONE);
// Two-block message.
string message = "12345678901234567890123456789012";
string ciphertext1 = EncryptMessage(message, params);
EXPECT_EQ(message.size(), ciphertext1.size());
string ciphertext2 = EncryptMessage(string(message), params);
EXPECT_EQ(message.size(), ciphertext2.size());
// ECB is deterministic.
EXPECT_EQ(ciphertext1, ciphertext2);
string plaintext = DecryptMessage(ciphertext1, params);
EXPECT_EQ(message, plaintext);
}
/*
* EncryptionOperationsTest.AesEcbRoundTripSuccess
*
* Verifies that AES encryption fails in the correct way when an unauthorized mode is specified.
*/
TEST_P(EncryptionOperationsTest, AesWrongMode) {
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.Authorization(TAG_NO_AUTH_REQUIRED)
.AesEncryptionKey(128)
.Authorization(TAG_BLOCK_MODE, BlockMode::CBC)
.Padding(PaddingMode::NONE)));
ASSERT_GT(key_blob_.size(), 0U);
// Two-block message.
string message = "12345678901234567890123456789012";
EXPECT_EQ(
ErrorCode::INCOMPATIBLE_BLOCK_MODE,
Begin(KeyPurpose::ENCRYPT,
AuthorizationSetBuilder().BlockMode(BlockMode::ECB).Padding(PaddingMode::NONE)));
}
/*
* EncryptionOperationsTest.AesWrongPurpose
*
* Verifies that AES encryption fails in the correct way when an unauthorized purpose is
* specified.
*/
TEST_P(EncryptionOperationsTest, AesWrongPurpose) {
auto err = GenerateKey(AuthorizationSetBuilder()
.Authorization(TAG_NO_AUTH_REQUIRED)
.AesKey(128)
.Authorization(TAG_PURPOSE, KeyPurpose::ENCRYPT)
.Authorization(TAG_BLOCK_MODE, BlockMode::GCM)
.Authorization(TAG_MIN_MAC_LENGTH, 128)
.Padding(PaddingMode::NONE));
ASSERT_EQ(ErrorCode::OK, err) << "Got " << err;
ASSERT_GT(key_blob_.size(), 0U);
err = Begin(KeyPurpose::DECRYPT, AuthorizationSetBuilder()
.BlockMode(BlockMode::GCM)
.Padding(PaddingMode::NONE)
.Authorization(TAG_MAC_LENGTH, 128));
EXPECT_EQ(ErrorCode::INCOMPATIBLE_PURPOSE, err) << "Got " << err;
CheckedDeleteKey();
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.Authorization(TAG_NO_AUTH_REQUIRED)
.AesKey(128)
.Authorization(TAG_PURPOSE, KeyPurpose::DECRYPT)
.Authorization(TAG_BLOCK_MODE, BlockMode::GCM)
.Authorization(TAG_MIN_MAC_LENGTH, 128)
.Padding(PaddingMode::NONE)));
err = Begin(KeyPurpose::ENCRYPT, AuthorizationSetBuilder()
.BlockMode(BlockMode::GCM)
.Padding(PaddingMode::NONE)
.Authorization(TAG_MAC_LENGTH, 128));
EXPECT_EQ(ErrorCode::INCOMPATIBLE_PURPOSE, err) << "Got " << err;
}
/*
* EncryptionOperationsTest.AesEcbNoPaddingWrongInputSize
*
* Verifies that AES encryption fails in the correct way when provided an input that is not a
* multiple of the block size and no padding is specified.
*/
TEST_P(EncryptionOperationsTest, AesEcbNoPaddingWrongInputSize) {
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.Authorization(TAG_NO_AUTH_REQUIRED)
.AesEncryptionKey(128)
.Authorization(TAG_BLOCK_MODE, BlockMode::ECB)
.Padding(PaddingMode::NONE)));
// Message is slightly shorter than two blocks.
string message(16 * 2 - 1, 'a');
auto params = AuthorizationSetBuilder().BlockMode(BlockMode::ECB).Padding(PaddingMode::NONE);
EXPECT_EQ(ErrorCode::OK, Begin(KeyPurpose::ENCRYPT, params));
string ciphertext;
EXPECT_EQ(ErrorCode::INVALID_INPUT_LENGTH, Finish(message, &ciphertext));
EXPECT_EQ(0U, ciphertext.size());
}
/*
* EncryptionOperationsTest.AesEcbPkcs7Padding
*
* Verifies that AES PKCS7 padding works for any message length.
*/
TEST_P(EncryptionOperationsTest, AesEcbPkcs7Padding) {
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.Authorization(TAG_NO_AUTH_REQUIRED)
.AesEncryptionKey(128)
.Authorization(TAG_BLOCK_MODE, BlockMode::ECB)
.Padding(PaddingMode::PKCS7)));
auto params = AuthorizationSetBuilder().BlockMode(BlockMode::ECB).Padding(PaddingMode::PKCS7);
// Try various message lengths; all should work.
for (size_t i = 0; i < 32; ++i) {
string message(i, 'a');
string ciphertext = EncryptMessage(message, params);
EXPECT_EQ(i + 16 - (i % 16), ciphertext.size());
string plaintext = DecryptMessage(ciphertext, params);
EXPECT_EQ(message, plaintext);
}
}
/*
* EncryptionOperationsTest.AesEcbWrongPadding
*
* Verifies that AES enryption fails in the correct way when an unauthorized padding mode is
* specified.
*/
TEST_P(EncryptionOperationsTest, AesEcbWrongPadding) {
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.Authorization(TAG_NO_AUTH_REQUIRED)
.AesEncryptionKey(128)
.Authorization(TAG_BLOCK_MODE, BlockMode::ECB)
.Padding(PaddingMode::NONE)));
auto params = AuthorizationSetBuilder().BlockMode(BlockMode::ECB).Padding(PaddingMode::PKCS7);
// Try various message lengths; all should fail
for (size_t i = 0; i < 32; ++i) {
string message(i, 'a');
EXPECT_EQ(ErrorCode::INCOMPATIBLE_PADDING_MODE, Begin(KeyPurpose::ENCRYPT, params));
}
}
/*
* EncryptionOperationsTest.AesEcbPkcs7PaddingCorrupted
*
* Verifies that AES decryption fails in the correct way when the padding is corrupted.
*/
TEST_P(EncryptionOperationsTest, AesEcbPkcs7PaddingCorrupted) {
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.Authorization(TAG_NO_AUTH_REQUIRED)
.AesEncryptionKey(128)
.Authorization(TAG_BLOCK_MODE, BlockMode::ECB)
.Padding(PaddingMode::PKCS7)));
auto params = AuthorizationSetBuilder().BlockMode(BlockMode::ECB).Padding(PaddingMode::PKCS7);
string message = "a";
string ciphertext = EncryptMessage(message, params);
EXPECT_EQ(16U, ciphertext.size());
EXPECT_NE(ciphertext, message);
++ciphertext[ciphertext.size() / 2];
EXPECT_EQ(ErrorCode::OK, Begin(KeyPurpose::DECRYPT, params));
string plaintext;
EXPECT_EQ(ErrorCode::INVALID_INPUT_LENGTH, Finish(message, &plaintext));
}
vector<uint8_t> CopyIv(const AuthorizationSet& set) {
auto iv = set.GetTagValue(TAG_NONCE);
EXPECT_TRUE(iv);
return iv->get();
}
/*
* EncryptionOperationsTest.AesCtrRoundTripSuccess
*
* Verifies that AES CTR mode works.
*/
TEST_P(EncryptionOperationsTest, AesCtrRoundTripSuccess) {
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.Authorization(TAG_NO_AUTH_REQUIRED)
.AesEncryptionKey(128)
.Authorization(TAG_BLOCK_MODE, BlockMode::CTR)
.Padding(PaddingMode::NONE)));
auto params = AuthorizationSetBuilder().BlockMode(BlockMode::CTR).Padding(PaddingMode::NONE);
string message = "123";
AuthorizationSet out_params;
string ciphertext1 = EncryptMessage(message, params, &out_params);
vector<uint8_t> iv1 = CopyIv(out_params);
EXPECT_EQ(16U, iv1.size());
EXPECT_EQ(message.size(), ciphertext1.size());
out_params.Clear();
string ciphertext2 = EncryptMessage(message, params, &out_params);
vector<uint8_t> iv2 = CopyIv(out_params);
EXPECT_EQ(16U, iv2.size());
// IVs should be random, so ciphertexts should differ.
EXPECT_NE(ciphertext1, ciphertext2);
auto params_iv1 =
AuthorizationSetBuilder().Authorizations(params).Authorization(TAG_NONCE, iv1);
auto params_iv2 =
AuthorizationSetBuilder().Authorizations(params).Authorization(TAG_NONCE, iv2);
string plaintext = DecryptMessage(ciphertext1, params_iv1);
EXPECT_EQ(message, plaintext);
plaintext = DecryptMessage(ciphertext2, params_iv2);
EXPECT_EQ(message, plaintext);
// Using the wrong IV will result in a "valid" decryption, but the data will be garbage.
plaintext = DecryptMessage(ciphertext1, params_iv2);
EXPECT_NE(message, plaintext);
plaintext = DecryptMessage(ciphertext2, params_iv1);
EXPECT_NE(message, plaintext);
}
/*
* EncryptionOperationsTest.AesIncremental
*
* Verifies that AES works, all modes, when provided data in various size increments.
*/
TEST_P(EncryptionOperationsTest, AesIncremental) {
auto block_modes = {
BlockMode::ECB,
BlockMode::CBC,
BlockMode::CTR,
BlockMode::GCM,
};
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.Authorization(TAG_NO_AUTH_REQUIRED)
.AesEncryptionKey(128)
.BlockMode(block_modes)
.Padding(PaddingMode::NONE)
.Authorization(TAG_MIN_MAC_LENGTH, 128)));
for (int increment = 1; increment <= 240; ++increment) {
for (auto block_mode : block_modes) {
string message(240, 'a');
auto params =
AuthorizationSetBuilder().BlockMode(block_mode).Padding(PaddingMode::NONE);
if (block_mode == BlockMode::GCM) {
params.Authorization(TAG_MAC_LENGTH, 128) /* for GCM */;
}
AuthorizationSet output_params;
EXPECT_EQ(ErrorCode::OK, Begin(KeyPurpose::ENCRYPT, params, &output_params));
string ciphertext;
string to_send;
for (size_t i = 0; i < message.size(); i += increment) {
EXPECT_EQ(ErrorCode::OK, Update(message.substr(i, increment), &ciphertext));
}
EXPECT_EQ(ErrorCode::OK, Finish(to_send, &ciphertext))
<< "Error sending " << to_send << " with block mode " << block_mode;
switch (block_mode) {
case BlockMode::GCM:
EXPECT_EQ(message.size() + 16, ciphertext.size());
break;
case BlockMode::CTR:
EXPECT_EQ(message.size(), ciphertext.size());
break;
case BlockMode::CBC:
case BlockMode::ECB:
EXPECT_EQ(message.size() + message.size() % 16, ciphertext.size());
break;
}
auto iv = output_params.GetTagValue(TAG_NONCE);
switch (block_mode) {
case BlockMode::CBC:
case BlockMode::GCM:
case BlockMode::CTR:
ASSERT_TRUE(iv) << "No IV for block mode " << block_mode;
EXPECT_EQ(block_mode == BlockMode::GCM ? 12U : 16U, iv->get().size());
params.push_back(TAG_NONCE, iv->get());
break;
case BlockMode::ECB:
EXPECT_FALSE(iv) << "ECB mode should not generate IV";
break;
}
EXPECT_EQ(ErrorCode::OK, Begin(KeyPurpose::DECRYPT, params))
<< "Decrypt begin() failed for block mode " << block_mode;
string plaintext;
for (size_t i = 0; i < ciphertext.size(); i += increment) {
EXPECT_EQ(ErrorCode::OK, Update(ciphertext.substr(i, increment), &plaintext));
}
ErrorCode error = Finish(to_send, &plaintext);
ASSERT_EQ(ErrorCode::OK, error) << "Decryption failed for block mode " << block_mode
<< " and increment " << increment;
if (error == ErrorCode::OK) {
ASSERT_EQ(message, plaintext) << "Decryption didn't match for block mode "
<< block_mode << " and increment " << increment;
}
}
}
}
struct AesCtrSp80038aTestVector {
const char* key;
const char* nonce;
const char* plaintext;
const char* ciphertext;
};
// These test vectors are taken from
// http://csrc.nist.gov/publications/nistpubs/800-38a/sp800-38a.pdf, section F.5.
static const AesCtrSp80038aTestVector kAesCtrSp80038aTestVectors[] = {
// AES-128
{
"2b7e151628aed2a6abf7158809cf4f3c",
"f0f1f2f3f4f5f6f7f8f9fafbfcfdfeff",
"6bc1bee22e409f96e93d7e117393172aae2d8a571e03ac9c9eb76fac45af8e51"
"30c81c46a35ce411e5fbc1191a0a52eff69f2445df4f9b17ad2b417be66c3710",
"874d6191b620e3261bef6864990db6ce9806f66b7970fdff8617187bb9fffdff"
"5ae4df3edbd5d35e5b4f09020db03eab1e031dda2fbe03d1792170a0f3009cee",
},
// AES-192
{
"8e73b0f7da0e6452c810f32b809079e562f8ead2522c6b7b",
"f0f1f2f3f4f5f6f7f8f9fafbfcfdfeff",
"6bc1bee22e409f96e93d7e117393172aae2d8a571e03ac9c9eb76fac45af8e51"
"30c81c46a35ce411e5fbc1191a0a52eff69f2445df4f9b17ad2b417be66c3710",
"1abc932417521ca24f2b0459fe7e6e0b090339ec0aa6faefd5ccc2c6f4ce8e94"
"1e36b26bd1ebc670d1bd1d665620abf74f78a7f6d29809585a97daec58c6b050",
},
// AES-256
{
"603deb1015ca71be2b73aef0857d77811f352c073b6108d72d9810a30914dff4",
"f0f1f2f3f4f5f6f7f8f9fafbfcfdfeff",
"6bc1bee22e409f96e93d7e117393172aae2d8a571e03ac9c9eb76fac45af8e51"
"30c81c46a35ce411e5fbc1191a0a52eff69f2445df4f9b17ad2b417be66c3710",
"601ec313775789a5b7a7f504bbf3d228f443e3ca4d62b59aca84e990cacaf5c5"
"2b0930daa23de94ce87017ba2d84988ddfc9c58db67aada613c2dd08457941a6",
},
};
/*
* EncryptionOperationsTest.AesCtrSp80038aTestVector
*
* Verifies AES CTR implementation against SP800-38A test vectors.
*/
TEST_P(EncryptionOperationsTest, AesCtrSp80038aTestVector) {
std::vector<uint32_t> InvalidSizes = InvalidKeySizes(Algorithm::AES);
for (size_t i = 0; i < 3; i++) {
const AesCtrSp80038aTestVector& test(kAesCtrSp80038aTestVectors[i]);
const string key = hex2str(test.key);
if (std::find(InvalidSizes.begin(), InvalidSizes.end(), (key.size() * 8)) !=
InvalidSizes.end())
continue;
const string nonce = hex2str(test.nonce);
const string plaintext = hex2str(test.plaintext);
const string ciphertext = hex2str(test.ciphertext);
CheckAesCtrTestVector(key, nonce, plaintext, ciphertext);
}
}
/*
* EncryptionOperationsTest.AesCtrIncompatiblePaddingMode
*
* Verifies that keymint rejects use of CTR mode with PKCS7 padding in the correct way.
*/
TEST_P(EncryptionOperationsTest, AesCtrIncompatiblePaddingMode) {
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.Authorization(TAG_NO_AUTH_REQUIRED)
.AesEncryptionKey(128)
.Authorization(TAG_BLOCK_MODE, BlockMode::CTR)
.Padding(PaddingMode::PKCS7)));
auto params = AuthorizationSetBuilder().BlockMode(BlockMode::CTR).Padding(PaddingMode::NONE);
EXPECT_EQ(ErrorCode::INCOMPATIBLE_PADDING_MODE, Begin(KeyPurpose::ENCRYPT, params));
}
/*
* EncryptionOperationsTest.AesCtrInvalidCallerNonce
*
* Verifies that keymint fails correctly when the user supplies an incorrect-size nonce.
*/
TEST_P(EncryptionOperationsTest, AesCtrInvalidCallerNonce) {
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.Authorization(TAG_NO_AUTH_REQUIRED)
.AesEncryptionKey(128)
.Authorization(TAG_BLOCK_MODE, BlockMode::CTR)
.Authorization(TAG_CALLER_NONCE)
.Padding(PaddingMode::NONE)));
auto params = AuthorizationSetBuilder()
.BlockMode(BlockMode::CTR)
.Padding(PaddingMode::NONE)
.Authorization(TAG_NONCE, AidlBuf(string(1, 'a')));
EXPECT_EQ(ErrorCode::INVALID_NONCE, Begin(KeyPurpose::ENCRYPT, params));
params = AuthorizationSetBuilder()
.BlockMode(BlockMode::CTR)
.Padding(PaddingMode::NONE)
.Authorization(TAG_NONCE, AidlBuf(string(15, 'a')));
EXPECT_EQ(ErrorCode::INVALID_NONCE, Begin(KeyPurpose::ENCRYPT, params));
params = AuthorizationSetBuilder()
.BlockMode(BlockMode::CTR)
.Padding(PaddingMode::NONE)
.Authorization(TAG_NONCE, AidlBuf(string(17, 'a')));
EXPECT_EQ(ErrorCode::INVALID_NONCE, Begin(KeyPurpose::ENCRYPT, params));
}
/*
* EncryptionOperationsTest.AesCtrInvalidCallerNonce
*
* Verifies that keymint fails correctly when the user supplies an incorrect-size nonce.
*/
TEST_P(EncryptionOperationsTest, AesCbcRoundTripSuccess) {
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.Authorization(TAG_NO_AUTH_REQUIRED)
.AesEncryptionKey(128)
.Authorization(TAG_BLOCK_MODE, BlockMode::CBC)
.Padding(PaddingMode::NONE)));
// Two-block message.
string message = "12345678901234567890123456789012";
auto params = AuthorizationSetBuilder().BlockMode(BlockMode::CBC).Padding(PaddingMode::NONE);
AuthorizationSet out_params;
string ciphertext1 = EncryptMessage(message, params, &out_params);
vector<uint8_t> iv1 = CopyIv(out_params);
EXPECT_EQ(message.size(), ciphertext1.size());
out_params.Clear();
string ciphertext2 = EncryptMessage(message, params, &out_params);
vector<uint8_t> iv2 = CopyIv(out_params);
EXPECT_EQ(message.size(), ciphertext2.size());
// IVs should be random, so ciphertexts should differ.
EXPECT_NE(ciphertext1, ciphertext2);
params.push_back(TAG_NONCE, iv1);
string plaintext = DecryptMessage(ciphertext1, params);
EXPECT_EQ(message, plaintext);
}
/*
* EncryptionOperationsTest.AesCallerNonce
*
* Verifies that AES caller-provided nonces work correctly.
*/
TEST_P(EncryptionOperationsTest, AesCallerNonce) {
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.Authorization(TAG_NO_AUTH_REQUIRED)
.AesEncryptionKey(128)
.Authorization(TAG_BLOCK_MODE, BlockMode::CBC)
.Authorization(TAG_CALLER_NONCE)
.Padding(PaddingMode::NONE)));
string message = "12345678901234567890123456789012";
// Don't specify nonce, should get a random one.
AuthorizationSetBuilder params =
AuthorizationSetBuilder().BlockMode(BlockMode::CBC).Padding(PaddingMode::NONE);
AuthorizationSet out_params;
string ciphertext = EncryptMessage(message, params, &out_params);
EXPECT_EQ(message.size(), ciphertext.size());
EXPECT_EQ(16U, out_params.GetTagValue(TAG_NONCE)->get().size());
params.push_back(TAG_NONCE, out_params.GetTagValue(TAG_NONCE)->get());
string plaintext = DecryptMessage(ciphertext, params);
EXPECT_EQ(message, plaintext);
// Now specify a nonce, should also work.
params = AuthorizationSetBuilder()
.BlockMode(BlockMode::CBC)
.Padding(PaddingMode::NONE)
.Authorization(TAG_NONCE, AidlBuf("abcdefghijklmnop"));
out_params.Clear();
ciphertext = EncryptMessage(message, params, &out_params);
// Decrypt with correct nonce.
plaintext = DecryptMessage(ciphertext, params);
EXPECT_EQ(message, plaintext);
// Try with wrong nonce.
params = AuthorizationSetBuilder()
.BlockMode(BlockMode::CBC)
.Padding(PaddingMode::NONE)
.Authorization(TAG_NONCE, AidlBuf("aaaaaaaaaaaaaaaa"));
plaintext = DecryptMessage(ciphertext, params);
EXPECT_NE(message, plaintext);
}
/*
* EncryptionOperationsTest.AesCallerNonceProhibited
*
* Verifies that caller-provided nonces are not permitted when not specified in the key
* authorizations.
*/
TEST_P(EncryptionOperationsTest, AesCallerNonceProhibited) {
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.Authorization(TAG_NO_AUTH_REQUIRED)
.AesEncryptionKey(128)
.Authorization(TAG_BLOCK_MODE, BlockMode::CBC)
.Padding(PaddingMode::NONE)));
string message = "12345678901234567890123456789012";
// Don't specify nonce, should get a random one.
AuthorizationSetBuilder params =
AuthorizationSetBuilder().BlockMode(BlockMode::CBC).Padding(PaddingMode::NONE);
AuthorizationSet out_params;
string ciphertext = EncryptMessage(message, params, &out_params);
EXPECT_EQ(message.size(), ciphertext.size());
EXPECT_EQ(16U, out_params.GetTagValue(TAG_NONCE)->get().size());
params.push_back(TAG_NONCE, out_params.GetTagValue(TAG_NONCE)->get());
string plaintext = DecryptMessage(ciphertext, params);
EXPECT_EQ(message, plaintext);
// Now specify a nonce, should fail
params = AuthorizationSetBuilder()
.BlockMode(BlockMode::CBC)
.Padding(PaddingMode::NONE)
.Authorization(TAG_NONCE, AidlBuf("abcdefghijklmnop"));
out_params.Clear();
EXPECT_EQ(ErrorCode::CALLER_NONCE_PROHIBITED, Begin(KeyPurpose::ENCRYPT, params, &out_params));
}
/*
* EncryptionOperationsTest.AesGcmRoundTripSuccess
*
* Verifies that AES GCM mode works.
*/
TEST_P(EncryptionOperationsTest, AesGcmRoundTripSuccess) {
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.Authorization(TAG_NO_AUTH_REQUIRED)
.AesEncryptionKey(128)
.Authorization(TAG_BLOCK_MODE, BlockMode::GCM)
.Padding(PaddingMode::NONE)
.Authorization(TAG_MIN_MAC_LENGTH, 128)));
string aad = "foobar";
string message = "123456789012345678901234567890123456";
auto begin_params = AuthorizationSetBuilder()
.BlockMode(BlockMode::GCM)
.Padding(PaddingMode::NONE)
.Authorization(TAG_MAC_LENGTH, 128);
// Encrypt
AuthorizationSet begin_out_params;
ASSERT_EQ(ErrorCode::OK, Begin(KeyPurpose::ENCRYPT, begin_params, &begin_out_params))
<< "Begin encrypt";
string ciphertext;
ASSERT_EQ(ErrorCode::OK, UpdateAad(aad));
ASSERT_EQ(ErrorCode::OK, Finish(message, &ciphertext));
ASSERT_EQ(ciphertext.length(), message.length() + 16);
// Grab nonce
begin_params.push_back(begin_out_params);
// Decrypt.
ASSERT_EQ(ErrorCode::OK, Begin(KeyPurpose::DECRYPT, begin_params)) << "Begin decrypt";
ASSERT_EQ(ErrorCode::OK, UpdateAad(aad));
string plaintext;
EXPECT_EQ(ErrorCode::OK, Finish(ciphertext, &plaintext));
EXPECT_EQ(message.length(), plaintext.length());
EXPECT_EQ(message, plaintext);
}
/*
* EncryptionOperationsTest.AesGcmRoundTripWithDelaySuccess
*
* Verifies that AES GCM mode works, even when there's a long delay
* between operations.
*/
TEST_P(EncryptionOperationsTest, AesGcmRoundTripWithDelaySuccess) {
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.Authorization(TAG_NO_AUTH_REQUIRED)
.AesEncryptionKey(128)
.Authorization(TAG_BLOCK_MODE, BlockMode::GCM)
.Padding(PaddingMode::NONE)
.Authorization(TAG_MIN_MAC_LENGTH, 128)));
string aad = "foobar";
string message = "123456789012345678901234567890123456";
auto begin_params = AuthorizationSetBuilder()
.BlockMode(BlockMode::GCM)
.Padding(PaddingMode::NONE)
.Authorization(TAG_MAC_LENGTH, 128);
// Encrypt
AuthorizationSet begin_out_params;
ASSERT_EQ(ErrorCode::OK, Begin(KeyPurpose::ENCRYPT, begin_params, &begin_out_params))
<< "Begin encrypt";
string ciphertext;
AuthorizationSet update_out_params;
ASSERT_EQ(ErrorCode::OK, UpdateAad(aad));
sleep(5);
ASSERT_EQ(ErrorCode::OK, Finish(message, &ciphertext));
ASSERT_EQ(ciphertext.length(), message.length() + 16);
// Grab nonce
begin_params.push_back(begin_out_params);
// Decrypt.
ASSERT_EQ(ErrorCode::OK, Begin(KeyPurpose::DECRYPT, begin_params)) << "Begin decrypt";
string plaintext;
ASSERT_EQ(ErrorCode::OK, UpdateAad(aad));
sleep(5);
ASSERT_EQ(ErrorCode::OK, Update(ciphertext, &plaintext));
sleep(5);
EXPECT_EQ(ErrorCode::OK, Finish("", &plaintext));
EXPECT_EQ(message.length(), plaintext.length());
EXPECT_EQ(message, plaintext);
}
/*
* EncryptionOperationsTest.AesGcmDifferentNonces
*
* Verifies that encrypting the same data with different nonces produces different outputs.
*/
TEST_P(EncryptionOperationsTest, AesGcmDifferentNonces) {
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.Authorization(TAG_NO_AUTH_REQUIRED)
.AesEncryptionKey(128)
.Authorization(TAG_BLOCK_MODE, BlockMode::GCM)
.Padding(PaddingMode::NONE)
.Authorization(TAG_MIN_MAC_LENGTH, 128)
.Authorization(TAG_CALLER_NONCE)));
string aad = "foobar";
string message = "123456789012345678901234567890123456";
string nonce1 = "000000000000";
string nonce2 = "111111111111";
string nonce3 = "222222222222";
string ciphertext1 =
EncryptMessage(message, BlockMode::GCM, PaddingMode::NONE, 128, AidlBuf(nonce1));
string ciphertext2 =
EncryptMessage(message, BlockMode::GCM, PaddingMode::NONE, 128, AidlBuf(nonce2));
string ciphertext3 =
EncryptMessage(message, BlockMode::GCM, PaddingMode::NONE, 128, AidlBuf(nonce3));
ASSERT_NE(ciphertext1, ciphertext2);
ASSERT_NE(ciphertext1, ciphertext3);
ASSERT_NE(ciphertext2, ciphertext3);
}
/*
* EncryptionOperationsTest.AesGcmTooShortTag
*
* Verifies that AES GCM mode fails correctly when a too-short tag length is specified.
*/
TEST_P(EncryptionOperationsTest, AesGcmTooShortTag) {
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.Authorization(TAG_NO_AUTH_REQUIRED)
.AesEncryptionKey(128)
.BlockMode(BlockMode::GCM)
.Padding(PaddingMode::NONE)
.Authorization(TAG_MIN_MAC_LENGTH, 128)));
string message = "123456789012345678901234567890123456";
auto params = AuthorizationSetBuilder()
.BlockMode(BlockMode::GCM)
.Padding(PaddingMode::NONE)
.Authorization(TAG_MAC_LENGTH, 96);
EXPECT_EQ(ErrorCode::INVALID_MAC_LENGTH, Begin(KeyPurpose::ENCRYPT, params));
}
/*
* EncryptionOperationsTest.AesGcmTooShortTagOnDecrypt
*
* Verifies that AES GCM mode fails correctly when a too-short tag is provided to decryption.
*/
TEST_P(EncryptionOperationsTest, AesGcmTooShortTagOnDecrypt) {
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.Authorization(TAG_NO_AUTH_REQUIRED)
.AesEncryptionKey(128)
.BlockMode(BlockMode::GCM)
.Padding(PaddingMode::NONE)
.Authorization(TAG_MIN_MAC_LENGTH, 128)));
string aad = "foobar";
string message = "123456789012345678901234567890123456";
auto params = AuthorizationSetBuilder()
.BlockMode(BlockMode::GCM)
.Padding(PaddingMode::NONE)
.Authorization(TAG_MAC_LENGTH, 128);
// Encrypt
AuthorizationSet begin_out_params;
EXPECT_EQ(ErrorCode::OK, Begin(KeyPurpose::ENCRYPT, params, &begin_out_params));
EXPECT_EQ(1U, begin_out_params.size());
ASSERT_TRUE(begin_out_params.GetTagValue(TAG_NONCE));
AuthorizationSet finish_out_params;
string ciphertext;
ASSERT_EQ(ErrorCode::OK, UpdateAad(aad));
EXPECT_EQ(ErrorCode::OK, Finish(message, &ciphertext));
params = AuthorizationSetBuilder()
.Authorizations(begin_out_params)
.BlockMode(BlockMode::GCM)
.Padding(PaddingMode::NONE)
.Authorization(TAG_MAC_LENGTH, 96);
// Decrypt.
EXPECT_EQ(ErrorCode::INVALID_MAC_LENGTH, Begin(KeyPurpose::DECRYPT, params));
}
/*
* EncryptionOperationsTest.AesGcmCorruptKey
*
* Verifies that AES GCM mode fails correctly when the decryption key is incorrect.
*/
TEST_P(EncryptionOperationsTest, AesGcmCorruptKey) {
const uint8_t nonce_bytes[] = {
0xb7, 0x94, 0x37, 0xae, 0x08, 0xff, 0x35, 0x5d, 0x7d, 0x8a, 0x4d, 0x0f,
};
string nonce = make_string(nonce_bytes);
const uint8_t ciphertext_bytes[] = {
0xb3, 0xf6, 0x79, 0x9e, 0x8f, 0x93, 0x26, 0xf2, 0xdf, 0x1e, 0x80, 0xfc,
0xd2, 0xcb, 0x16, 0xd7, 0x8c, 0x9d, 0xc7, 0xcc, 0x14, 0xbb, 0x67, 0x78,
0x62, 0xdc, 0x6c, 0x63, 0x9b, 0x3a, 0x63, 0x38, 0xd2, 0x4b, 0x31, 0x2d,
0x39, 0x89, 0xe5, 0x92, 0x0b, 0x5d, 0xbf, 0xc9, 0x76, 0x76, 0x5e, 0xfb,
0xfe, 0x57, 0xbb, 0x38, 0x59, 0x40, 0xa7, 0xa4, 0x3b, 0xdf, 0x05, 0xbd,
0xda, 0xe3, 0xc9, 0xd6, 0xa2, 0xfb, 0xbd, 0xfc, 0xc0, 0xcb, 0xa0,
};
string ciphertext = make_string(ciphertext_bytes);
auto params = AuthorizationSetBuilder()
.BlockMode(BlockMode::GCM)
.Padding(PaddingMode::NONE)
.Authorization(TAG_MAC_LENGTH, 128)
.Authorization(TAG_NONCE, nonce.data(), nonce.size());
auto import_params = AuthorizationSetBuilder()
.Authorization(TAG_NO_AUTH_REQUIRED)
.AesEncryptionKey(128)
.BlockMode(BlockMode::GCM)
.Padding(PaddingMode::NONE)
.Authorization(TAG_CALLER_NONCE)
.Authorization(TAG_MIN_MAC_LENGTH, 128);
// Import correct key and decrypt
const uint8_t key_bytes[] = {
0xba, 0x76, 0x35, 0x4f, 0x0a, 0xed, 0x6e, 0x8d,
0x91, 0xf4, 0x5c, 0x4f, 0xf5, 0xa0, 0x62, 0xdb,
};
string key = make_string(key_bytes);
ASSERT_EQ(ErrorCode::OK, ImportKey(import_params, KeyFormat::RAW, key));
string plaintext = DecryptMessage(ciphertext, params);
CheckedDeleteKey();
// Corrupt key and attempt to decrypt
key[0] = 0;
ASSERT_EQ(ErrorCode::OK, ImportKey(import_params, KeyFormat::RAW, key));
EXPECT_EQ(ErrorCode::OK, Begin(KeyPurpose::DECRYPT, params));
EXPECT_EQ(ErrorCode::VERIFICATION_FAILED, Finish(ciphertext, &plaintext));
CheckedDeleteKey();
}
/*
* EncryptionOperationsTest.AesGcmAadNoData
*
* Verifies that AES GCM mode works when provided additional authenticated data, but no data to
* encrypt.
*/
TEST_P(EncryptionOperationsTest, AesGcmAadNoData) {
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.Authorization(TAG_NO_AUTH_REQUIRED)
.AesEncryptionKey(128)
.BlockMode(BlockMode::GCM)
.Padding(PaddingMode::NONE)
.Authorization(TAG_MIN_MAC_LENGTH, 128)));
string aad = "1234567890123456";
auto params = AuthorizationSetBuilder()
.BlockMode(BlockMode::GCM)
.Padding(PaddingMode::NONE)
.Authorization(TAG_MAC_LENGTH, 128);
// Encrypt
AuthorizationSet begin_out_params;
EXPECT_EQ(ErrorCode::OK, Begin(KeyPurpose::ENCRYPT, params, &begin_out_params));
string ciphertext;
AuthorizationSet finish_out_params;
ASSERT_EQ(ErrorCode::OK, UpdateAad(aad));
EXPECT_EQ(ErrorCode::OK, Finish(&ciphertext));
EXPECT_TRUE(finish_out_params.empty());
// Grab nonce
params.push_back(begin_out_params);
// Decrypt.
EXPECT_EQ(ErrorCode::OK, Begin(KeyPurpose::DECRYPT, params));
ASSERT_EQ(ErrorCode::OK, UpdateAad(aad));
string plaintext;
EXPECT_EQ(ErrorCode::OK, Finish(ciphertext, &plaintext));
EXPECT_TRUE(finish_out_params.empty());
EXPECT_EQ("", plaintext);
}
/*
* EncryptionOperationsTest.AesGcmMultiPartAad
*
* Verifies that AES GCM mode works when provided additional authenticated data in multiple
* chunks.
*/
TEST_P(EncryptionOperationsTest, AesGcmMultiPartAad) {
const size_t tag_bits = 128;
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.Authorization(TAG_NO_AUTH_REQUIRED)
.AesEncryptionKey(128)
.BlockMode(BlockMode::GCM)
.Padding(PaddingMode::NONE)
.Authorization(TAG_MIN_MAC_LENGTH, 128)));
string message = "123456789012345678901234567890123456";
auto begin_params = AuthorizationSetBuilder()
.BlockMode(BlockMode::GCM)
.Padding(PaddingMode::NONE)
.Authorization(TAG_MAC_LENGTH, tag_bits);
AuthorizationSet begin_out_params;
EXPECT_EQ(ErrorCode::OK, Begin(KeyPurpose::ENCRYPT, begin_params, &begin_out_params));
// No data, AAD only.
EXPECT_EQ(ErrorCode::OK, UpdateAad("foo"));
EXPECT_EQ(ErrorCode::OK, UpdateAad("foo"));
string ciphertext;
EXPECT_EQ(ErrorCode::OK, Update(message, &ciphertext));
EXPECT_EQ(ErrorCode::OK, Finish(&ciphertext));
// Expect 128-bit (16-byte) tag appended to ciphertext.
EXPECT_EQ(message.size() + (tag_bits / 8), ciphertext.size());
// Grab nonce.
begin_params.push_back(begin_out_params);
// Decrypt
EXPECT_EQ(ErrorCode::OK, Begin(KeyPurpose::DECRYPT, begin_params));
EXPECT_EQ(ErrorCode::OK, UpdateAad("foofoo"));
string plaintext;
EXPECT_EQ(ErrorCode::OK, Finish(ciphertext, &plaintext));
EXPECT_EQ(message, plaintext);
}
/*
* EncryptionOperationsTest.AesGcmAadOutOfOrder
*
* Verifies that AES GCM mode fails correctly when given AAD after data to encipher.
*/
TEST_P(EncryptionOperationsTest, AesGcmAadOutOfOrder) {
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.Authorization(TAG_NO_AUTH_REQUIRED)
.AesEncryptionKey(128)
.BlockMode(BlockMode::GCM)
.Padding(PaddingMode::NONE)
.Authorization(TAG_MIN_MAC_LENGTH, 128)));
string message = "123456789012345678901234567890123456";
auto begin_params = AuthorizationSetBuilder()
.BlockMode(BlockMode::GCM)
.Padding(PaddingMode::NONE)
.Authorization(TAG_MAC_LENGTH, 128);
AuthorizationSet begin_out_params;
EXPECT_EQ(ErrorCode::OK, Begin(KeyPurpose::ENCRYPT, begin_params, &begin_out_params));
EXPECT_EQ(ErrorCode::OK, UpdateAad("foo"));
string ciphertext;
EXPECT_EQ(ErrorCode::OK, Update(message, &ciphertext));
EXPECT_EQ(ErrorCode::INVALID_TAG, UpdateAad("foo"));
op_ = {};
}
/*
* EncryptionOperationsTest.AesGcmBadAad
*
* Verifies that AES GCM decryption fails correctly when additional authenticated date is wrong.
*/
TEST_P(EncryptionOperationsTest, AesGcmBadAad) {
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.Authorization(TAG_NO_AUTH_REQUIRED)
.AesEncryptionKey(128)
.BlockMode(BlockMode::GCM)
.Padding(PaddingMode::NONE)
.Authorization(TAG_MIN_MAC_LENGTH, 128)));
string message = "12345678901234567890123456789012";
auto begin_params = AuthorizationSetBuilder()
.BlockMode(BlockMode::GCM)
.Padding(PaddingMode::NONE)
.Authorization(TAG_MAC_LENGTH, 128);
// Encrypt
AuthorizationSet begin_out_params;
EXPECT_EQ(ErrorCode::OK, Begin(KeyPurpose::ENCRYPT, begin_params, &begin_out_params));
EXPECT_EQ(ErrorCode::OK, UpdateAad("foobar"));
string ciphertext;
EXPECT_EQ(ErrorCode::OK, Finish(message, &ciphertext));
// Grab nonce
begin_params.push_back(begin_out_params);
// Decrypt.
EXPECT_EQ(ErrorCode::OK, Begin(KeyPurpose::DECRYPT, begin_params, &begin_out_params));
EXPECT_EQ(ErrorCode::OK, UpdateAad("barfoo"));
string plaintext;
EXPECT_EQ(ErrorCode::VERIFICATION_FAILED, Finish(ciphertext, &plaintext));
}
/*
* EncryptionOperationsTest.AesGcmWrongNonce
*
* Verifies that AES GCM decryption fails correctly when the nonce is incorrect.
*/
TEST_P(EncryptionOperationsTest, AesGcmWrongNonce) {
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.Authorization(TAG_NO_AUTH_REQUIRED)
.AesEncryptionKey(128)
.BlockMode(BlockMode::GCM)
.Padding(PaddingMode::NONE)
.Authorization(TAG_MIN_MAC_LENGTH, 128)));
string message = "12345678901234567890123456789012";
auto begin_params = AuthorizationSetBuilder()
.BlockMode(BlockMode::GCM)
.Padding(PaddingMode::NONE)
.Authorization(TAG_MAC_LENGTH, 128);
// Encrypt
AuthorizationSet begin_out_params;
EXPECT_EQ(ErrorCode::OK, Begin(KeyPurpose::ENCRYPT, begin_params, &begin_out_params));
EXPECT_EQ(ErrorCode::OK, UpdateAad("foobar"));
string ciphertext;
AuthorizationSet finish_out_params;
EXPECT_EQ(ErrorCode::OK, Finish(message, &ciphertext));
// Wrong nonce
begin_params.push_back(TAG_NONCE, AidlBuf("123456789012"));
// Decrypt.
EXPECT_EQ(ErrorCode::OK, Begin(KeyPurpose::DECRYPT, begin_params, &begin_out_params));
EXPECT_EQ(ErrorCode::OK, UpdateAad("foobar"));
string plaintext;
EXPECT_EQ(ErrorCode::VERIFICATION_FAILED, Finish(ciphertext, &plaintext));
// With wrong nonce, should have gotten garbage plaintext (or none).
EXPECT_NE(message, plaintext);
}
/*
* EncryptionOperationsTest.AesGcmCorruptTag
*
* Verifies that AES GCM decryption fails correctly when the tag is wrong.
*/
TEST_P(EncryptionOperationsTest, AesGcmCorruptTag) {
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.Authorization(TAG_NO_AUTH_REQUIRED)
.AesEncryptionKey(128)
.BlockMode(BlockMode::GCM)
.Padding(PaddingMode::NONE)
.Authorization(TAG_MIN_MAC_LENGTH, 128)));
string aad = "1234567890123456";
string message = "123456789012345678901234567890123456";
auto params = AuthorizationSetBuilder()
.BlockMode(BlockMode::GCM)
.Padding(PaddingMode::NONE)
.Authorization(TAG_MAC_LENGTH, 128);
// Encrypt
AuthorizationSet begin_out_params;
EXPECT_EQ(ErrorCode::OK, Begin(KeyPurpose::ENCRYPT, params, &begin_out_params));
EXPECT_EQ(ErrorCode::OK, UpdateAad(aad));
string ciphertext;
EXPECT_EQ(ErrorCode::OK, Finish(message, &ciphertext));
// Corrupt tag
++(*ciphertext.rbegin());
// Grab nonce
params.push_back(begin_out_params);
// Decrypt.
EXPECT_EQ(ErrorCode::OK, Begin(KeyPurpose::DECRYPT, params));
EXPECT_EQ(ErrorCode::OK, UpdateAad(aad));
string plaintext;
EXPECT_EQ(ErrorCode::VERIFICATION_FAILED, Finish(ciphertext, &plaintext));
}
/*
* EncryptionOperationsTest.TripleDesEcbRoundTripSuccess
*
* Verifies that 3DES is basically functional.
*/
TEST_P(EncryptionOperationsTest, TripleDesEcbRoundTripSuccess) {
auto auths = AuthorizationSetBuilder()
.TripleDesEncryptionKey(168)
.BlockMode(BlockMode::ECB)
.Authorization(TAG_NO_AUTH_REQUIRED)
.Padding(PaddingMode::NONE);
ASSERT_EQ(ErrorCode::OK, GenerateKey(auths));
// Two-block message.
string message = "1234567890123456";
auto inParams = AuthorizationSetBuilder().BlockMode(BlockMode::ECB).Padding(PaddingMode::NONE);
string ciphertext1 = EncryptMessage(message, inParams);
EXPECT_EQ(message.size(), ciphertext1.size());
string ciphertext2 = EncryptMessage(string(message), inParams);
EXPECT_EQ(message.size(), ciphertext2.size());
// ECB is deterministic.
EXPECT_EQ(ciphertext1, ciphertext2);
string plaintext = DecryptMessage(ciphertext1, inParams);
EXPECT_EQ(message, plaintext);
}
/*
* EncryptionOperationsTest.TripleDesEcbNotAuthorized
*
* Verifies that CBC keys reject ECB usage.
*/
TEST_P(EncryptionOperationsTest, TripleDesEcbNotAuthorized) {
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.TripleDesEncryptionKey(168)
.BlockMode(BlockMode::CBC)
.Authorization(TAG_NO_AUTH_REQUIRED)
.Padding(PaddingMode::NONE)));
auto inParams = AuthorizationSetBuilder().BlockMode(BlockMode::ECB).Padding(PaddingMode::NONE);
EXPECT_EQ(ErrorCode::INCOMPATIBLE_BLOCK_MODE, Begin(KeyPurpose::ENCRYPT, inParams));
}
/*
* EncryptionOperationsTest.TripleDesEcbPkcs7Padding
*
* Tests ECB mode with PKCS#7 padding, various message sizes.
*/
TEST_P(EncryptionOperationsTest, TripleDesEcbPkcs7Padding) {
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.TripleDesEncryptionKey(168)
.BlockMode(BlockMode::ECB)
.Authorization(TAG_NO_AUTH_REQUIRED)
.Padding(PaddingMode::PKCS7)));
for (size_t i = 0; i < 32; ++i) {
string message(i, 'a');
auto inParams =
AuthorizationSetBuilder().BlockMode(BlockMode::ECB).Padding(PaddingMode::PKCS7);
string ciphertext = EncryptMessage(message, inParams);
EXPECT_EQ(i + 8 - (i % 8), ciphertext.size());
string plaintext = DecryptMessage(ciphertext, inParams);
EXPECT_EQ(message, plaintext);
}
}
/*
* EncryptionOperationsTest.TripleDesEcbNoPaddingKeyWithPkcs7Padding
*
* Verifies that keys configured for no padding reject PKCS7 padding
*/
TEST_P(EncryptionOperationsTest, TripleDesEcbNoPaddingKeyWithPkcs7Padding) {
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.TripleDesEncryptionKey(168)
.BlockMode(BlockMode::ECB)
.Authorization(TAG_NO_AUTH_REQUIRED)
.Padding(PaddingMode::NONE)));
for (size_t i = 0; i < 32; ++i) {
auto inParams =
AuthorizationSetBuilder().BlockMode(BlockMode::ECB).Padding(PaddingMode::PKCS7);
EXPECT_EQ(ErrorCode::INCOMPATIBLE_PADDING_MODE, Begin(KeyPurpose::ENCRYPT, inParams));
}
}
/*
* EncryptionOperationsTest.TripleDesEcbPkcs7PaddingCorrupted
*
* Verifies that corrupted padding is detected.
*/
TEST_P(EncryptionOperationsTest, TripleDesEcbPkcs7PaddingCorrupted) {
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.TripleDesEncryptionKey(168)
.BlockMode(BlockMode::ECB)
.Authorization(TAG_NO_AUTH_REQUIRED)
.Padding(PaddingMode::PKCS7)));
string message = "a";
string ciphertext = EncryptMessage(message, BlockMode::ECB, PaddingMode::PKCS7);
EXPECT_EQ(8U, ciphertext.size());
EXPECT_NE(ciphertext, message);
++ciphertext[ciphertext.size() / 2];
AuthorizationSetBuilder begin_params;
begin_params.push_back(TAG_BLOCK_MODE, BlockMode::ECB);
begin_params.push_back(TAG_PADDING, PaddingMode::PKCS7);
EXPECT_EQ(ErrorCode::OK, Begin(KeyPurpose::DECRYPT, begin_params));
string plaintext;
EXPECT_EQ(ErrorCode::OK, Update(ciphertext, &plaintext));
EXPECT_EQ(ErrorCode::INVALID_ARGUMENT, Finish(&plaintext));
}
struct TripleDesTestVector {
const char* name;
const KeyPurpose purpose;
const BlockMode block_mode;
const PaddingMode padding_mode;
const char* key;
const char* iv;
const char* input;
const char* output;
};
// These test vectors are from NIST CAVP, plus a few custom variants to test padding, since all
// of the NIST vectors are multiples of the block size.
static const TripleDesTestVector kTripleDesTestVectors[] = {
{
"TECBMMT3 Encrypt 0", KeyPurpose::ENCRYPT, BlockMode::ECB, PaddingMode::NONE,
"a2b5bc67da13dc92cd9d344aa238544a0e1fa79ef76810cd", // key
"", // IV
"329d86bdf1bc5af4", // input
"d946c2756d78633f", // output
},
{
"TECBMMT3 Encrypt 1", KeyPurpose::ENCRYPT, BlockMode::ECB, PaddingMode::NONE,
"49e692290d2a5e46bace79b9648a4c5d491004c262dc9d49", // key
"", // IV
"6b1540781b01ce1997adae102dbf3c5b", // input
"4d0dc182d6e481ac4a3dc6ab6976ccae", // output
},
{
"TECBMMT3 Decrypt 0", KeyPurpose::DECRYPT, BlockMode::ECB, PaddingMode::NONE,
"52daec2ac7dc1958377392682f37860b2cc1ea2304bab0e9", // key
"", // IV
"6daad94ce08acfe7", // input
"660e7d32dcc90e79", // output
},
{
"TECBMMT3 Decrypt 1", KeyPurpose::DECRYPT, BlockMode::ECB, PaddingMode::NONE,
"7f8fe3d3f4a48394fb682c2919926d6ddfce8932529229ce", // key
"", // IV
"e9653a0a1f05d31b9acd12d73aa9879d", // input
"9b2ae9d998efe62f1b592e7e1df8ff38", // output
},
{
"TCBCMMT3 Encrypt 0", KeyPurpose::ENCRYPT, BlockMode::CBC, PaddingMode::NONE,
"b5cb1504802326c73df186e3e352a20de643b0d63ee30e37", // key
"43f791134c5647ba", // IV
"dcc153cef81d6f24", // input
"92538bd8af18d3ba", // output
},
{
"TCBCMMT3 Encrypt 1", KeyPurpose::ENCRYPT, BlockMode::CBC, PaddingMode::NONE,
"a49d7564199e97cb529d2c9d97bf2f98d35edf57ba1f7358", // key
"c2e999cb6249023c", // IV
"c689aee38a301bb316da75db36f110b5", // input
"e9afaba5ec75ea1bbe65506655bb4ecb", // output
},
{
"TCBCMMT3 Encrypt 1 PKCS7 variant", KeyPurpose::ENCRYPT, BlockMode::CBC,
PaddingMode::PKCS7,
"a49d7564199e97cb529d2c9d97bf2f98d35edf57ba1f7358", // key
"c2e999cb6249023c", // IV
"c689aee38a301bb316da75db36f110b500", // input
"e9afaba5ec75ea1bbe65506655bb4ecb825aa27ec0656156", // output
},
{
"TCBCMMT3 Encrypt 1 PKCS7 decrypted", KeyPurpose::DECRYPT, BlockMode::CBC,
PaddingMode::PKCS7,
"a49d7564199e97cb529d2c9d97bf2f98d35edf57ba1f7358", // key
"c2e999cb6249023c", // IV
"e9afaba5ec75ea1bbe65506655bb4ecb825aa27ec0656156", // input
"c689aee38a301bb316da75db36f110b500", // output
},
{
"TCBCMMT3 Decrypt 0", KeyPurpose::DECRYPT, BlockMode::CBC, PaddingMode::NONE,
"5eb6040d46082c7aa7d06dfd08dfeac8c18364c1548c3ba1", // key
"41746c7e442d3681", // IV
"c53a7b0ec40600fe", // input
"d4f00eb455de1034", // output
},
{
"TCBCMMT3 Decrypt 1", KeyPurpose::DECRYPT, BlockMode::CBC, PaddingMode::NONE,
"5b1cce7c0dc1ec49130dfb4af45785ab9179e567f2c7d549", // key
"3982bc02c3727d45", // IV
"6006f10adef52991fcc777a1238bbb65", // input
"edae09288e9e3bc05746d872b48e3b29", // output
},
};
/*
* EncryptionOperationsTest.TripleDesTestVector
*
* Verifies that NIST (plus a few extra) test vectors produce the correct results.
*/
TEST_P(EncryptionOperationsTest, TripleDesTestVector) {
constexpr size_t num_tests = sizeof(kTripleDesTestVectors) / sizeof(TripleDesTestVector);
for (auto* test = kTripleDesTestVectors; test < kTripleDesTestVectors + num_tests; ++test) {
SCOPED_TRACE(test->name);
CheckTripleDesTestVector(test->purpose, test->block_mode, test->padding_mode,
hex2str(test->key), hex2str(test->iv), hex2str(test->input),
hex2str(test->output));
}
}
/*
* EncryptionOperationsTest.TripleDesCbcRoundTripSuccess
*
* Validates CBC mode functionality.
*/
TEST_P(EncryptionOperationsTest, TripleDesCbcRoundTripSuccess) {
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.TripleDesEncryptionKey(168)
.BlockMode(BlockMode::CBC)
.Authorization(TAG_NO_AUTH_REQUIRED)
.Padding(PaddingMode::NONE)));
ASSERT_GT(key_blob_.size(), 0U);
// Two-block message.
string message = "1234567890123456";
vector<uint8_t> iv1;
string ciphertext1 = EncryptMessage(message, BlockMode::CBC, PaddingMode::NONE, &iv1);
EXPECT_EQ(message.size(), ciphertext1.size());
vector<uint8_t> iv2;
string ciphertext2 = EncryptMessage(message, BlockMode::CBC, PaddingMode::NONE, &iv2);
EXPECT_EQ(message.size(), ciphertext2.size());
// IVs should be random, so ciphertexts should differ.
EXPECT_NE(iv1, iv2);
EXPECT_NE(ciphertext1, ciphertext2);
string plaintext = DecryptMessage(ciphertext1, BlockMode::CBC, PaddingMode::NONE, iv1);
EXPECT_EQ(message, plaintext);
}
/*
* EncryptionOperationsTest.TripleDesCallerIv
*
* Validates that 3DES keys can allow caller-specified IVs, and use them correctly.
*/
TEST_P(EncryptionOperationsTest, TripleDesCallerIv) {
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.TripleDesEncryptionKey(168)
.BlockMode(BlockMode::CBC)
.Authorization(TAG_NO_AUTH_REQUIRED)
.Authorization(TAG_CALLER_NONCE)
.Padding(PaddingMode::NONE)));
string message = "1234567890123456";
vector<uint8_t> iv;
// Don't specify IV, should get a random one.
string ciphertext1 = EncryptMessage(message, BlockMode::CBC, PaddingMode::NONE, &iv);
EXPECT_EQ(message.size(), ciphertext1.size());
EXPECT_EQ(8U, iv.size());
string plaintext = DecryptMessage(ciphertext1, BlockMode::CBC, PaddingMode::NONE, iv);
EXPECT_EQ(message, plaintext);
// Now specify an IV, should also work.
iv = AidlBuf("abcdefgh");
string ciphertext2 = EncryptMessage(message, BlockMode::CBC, PaddingMode::NONE, iv);
// Decrypt with correct IV.
plaintext = DecryptMessage(ciphertext2, BlockMode::CBC, PaddingMode::NONE, iv);
EXPECT_EQ(message, plaintext);
// Now try with wrong IV.
plaintext = DecryptMessage(ciphertext2, BlockMode::CBC, PaddingMode::NONE, AidlBuf("aaaaaaaa"));
EXPECT_NE(message, plaintext);
}
/*
* EncryptionOperationsTest, TripleDesCallerNonceProhibited.
*
* Verifies that 3DES keys without TAG_CALLER_NONCE do not allow caller-specified IVS.
*/
TEST_P(EncryptionOperationsTest, TripleDesCallerNonceProhibited) {
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.TripleDesEncryptionKey(168)
.BlockMode(BlockMode::CBC)
.Authorization(TAG_NO_AUTH_REQUIRED)
.Padding(PaddingMode::NONE)));
string message = "12345678901234567890123456789012";
vector<uint8_t> iv;
// Don't specify nonce, should get a random one.
string ciphertext1 = EncryptMessage(message, BlockMode::CBC, PaddingMode::NONE, &iv);
EXPECT_EQ(message.size(), ciphertext1.size());
EXPECT_EQ(8U, iv.size());
string plaintext = DecryptMessage(ciphertext1, BlockMode::CBC, PaddingMode::NONE, iv);
EXPECT_EQ(message, plaintext);
// Now specify a nonce, should fail.
auto input_params = AuthorizationSetBuilder()
.Authorization(TAG_NONCE, AidlBuf("abcdefgh"))
.BlockMode(BlockMode::CBC)
.Padding(PaddingMode::NONE);
AuthorizationSet output_params;
EXPECT_EQ(ErrorCode::CALLER_NONCE_PROHIBITED,
Begin(KeyPurpose::ENCRYPT, input_params, &output_params));
}
/*
* EncryptionOperationsTest.TripleDesCbcNotAuthorized
*
* Verifies that 3DES ECB-only keys do not allow CBC usage.
*/
TEST_P(EncryptionOperationsTest, TripleDesCbcNotAuthorized) {
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.TripleDesEncryptionKey(168)
.BlockMode(BlockMode::ECB)
.Authorization(TAG_NO_AUTH_REQUIRED)
.Padding(PaddingMode::NONE)));
// Two-block message.
string message = "1234567890123456";
auto begin_params =
AuthorizationSetBuilder().BlockMode(BlockMode::CBC).Padding(PaddingMode::NONE);
EXPECT_EQ(ErrorCode::INCOMPATIBLE_BLOCK_MODE, Begin(KeyPurpose::ENCRYPT, begin_params));
}
/*
* EncryptionOperationsTest.TripleDesCbcNoPaddingWrongInputSize
*
* Verifies that unpadded CBC operations reject inputs that are not a multiple of block size.
*/
TEST_P(EncryptionOperationsTest, TripleDesCbcNoPaddingWrongInputSize) {
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.TripleDesEncryptionKey(168)
.BlockMode(BlockMode::CBC)
.Authorization(TAG_NO_AUTH_REQUIRED)
.Padding(PaddingMode::NONE)));
// Message is slightly shorter than two blocks.
string message = "123456789012345";
auto begin_params =
AuthorizationSetBuilder().BlockMode(BlockMode::CBC).Padding(PaddingMode::NONE);
AuthorizationSet output_params;
EXPECT_EQ(ErrorCode::OK, Begin(KeyPurpose::ENCRYPT, begin_params, &output_params));
string ciphertext;
EXPECT_EQ(ErrorCode::INVALID_INPUT_LENGTH, Finish(message, "", &ciphertext));
}
/*
* EncryptionOperationsTest, TripleDesCbcPkcs7Padding.
*
* Verifies that PKCS7 padding works correctly in CBC mode.
*/
TEST_P(EncryptionOperationsTest, TripleDesCbcPkcs7Padding) {
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.TripleDesEncryptionKey(168)
.BlockMode(BlockMode::CBC)
.Authorization(TAG_NO_AUTH_REQUIRED)
.Padding(PaddingMode::PKCS7)));
// Try various message lengths; all should work.
for (size_t i = 0; i < 32; ++i) {
string message(i, 'a');
vector<uint8_t> iv;
string ciphertext = EncryptMessage(message, BlockMode::CBC, PaddingMode::PKCS7, &iv);
EXPECT_EQ(i + 8 - (i % 8), ciphertext.size());
string plaintext = DecryptMessage(ciphertext, BlockMode::CBC, PaddingMode::PKCS7, iv);
EXPECT_EQ(message, plaintext);
}
}
/*
* EncryptionOperationsTest.TripleDesCbcNoPaddingKeyWithPkcs7Padding
*
* Verifies that a key that requires PKCS7 padding cannot be used in unpadded mode.
*/
TEST_P(EncryptionOperationsTest, TripleDesCbcNoPaddingKeyWithPkcs7Padding) {
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.TripleDesEncryptionKey(168)
.BlockMode(BlockMode::CBC)
.Authorization(TAG_NO_AUTH_REQUIRED)
.Padding(PaddingMode::NONE)));
// Try various message lengths; all should fail.
for (size_t i = 0; i < 32; ++i) {
auto begin_params =
AuthorizationSetBuilder().BlockMode(BlockMode::CBC).Padding(PaddingMode::PKCS7);
EXPECT_EQ(ErrorCode::INCOMPATIBLE_PADDING_MODE, Begin(KeyPurpose::ENCRYPT, begin_params));
}
}
/*
* EncryptionOperationsTest.TripleDesCbcPkcs7PaddingCorrupted
*
* Verifies that corrupted PKCS7 padding is rejected during decryption.
*/
TEST_P(EncryptionOperationsTest, TripleDesCbcPkcs7PaddingCorrupted) {
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.TripleDesEncryptionKey(168)
.BlockMode(BlockMode::CBC)
.Authorization(TAG_NO_AUTH_REQUIRED)
.Padding(PaddingMode::PKCS7)));
string message = "a";
vector<uint8_t> iv;
string ciphertext = EncryptMessage(message, BlockMode::CBC, PaddingMode::PKCS7, &iv);
EXPECT_EQ(8U, ciphertext.size());
EXPECT_NE(ciphertext, message);
++ciphertext[ciphertext.size() / 2];
auto begin_params = AuthorizationSetBuilder()
.BlockMode(BlockMode::CBC)
.Padding(PaddingMode::PKCS7)
.Authorization(TAG_NONCE, iv);
EXPECT_EQ(ErrorCode::OK, Begin(KeyPurpose::DECRYPT, begin_params));
string plaintext;
EXPECT_EQ(ErrorCode::OK, Update(ciphertext, &plaintext));
EXPECT_EQ(ErrorCode::INVALID_ARGUMENT, Finish(&plaintext));
}
/*
* EncryptionOperationsTest, TripleDesCbcIncrementalNoPadding.
*
* Verifies that 3DES CBC works with many different input sizes.
*/
TEST_P(EncryptionOperationsTest, TripleDesCbcIncrementalNoPadding) {
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.TripleDesEncryptionKey(168)
.BlockMode(BlockMode::CBC)
.Authorization(TAG_NO_AUTH_REQUIRED)
.Padding(PaddingMode::NONE)));
int increment = 7;
string message(240, 'a');
AuthorizationSet input_params =
AuthorizationSetBuilder().BlockMode(BlockMode::CBC).Padding(PaddingMode::NONE);
AuthorizationSet output_params;
EXPECT_EQ(ErrorCode::OK, Begin(KeyPurpose::ENCRYPT, input_params, &output_params));
string ciphertext;
for (size_t i = 0; i < message.size(); i += increment)
EXPECT_EQ(ErrorCode::OK, Update(message.substr(i, increment), &ciphertext));
EXPECT_EQ(ErrorCode::OK, Finish(&ciphertext));
EXPECT_EQ(message.size(), ciphertext.size());
// Move TAG_NONCE into input_params
input_params = output_params;
input_params.push_back(TAG_BLOCK_MODE, BlockMode::CBC);
input_params.push_back(TAG_PADDING, PaddingMode::NONE);
output_params.Clear();
EXPECT_EQ(ErrorCode::OK, Begin(KeyPurpose::DECRYPT, input_params, &output_params));
string plaintext;
for (size_t i = 0; i < ciphertext.size(); i += increment)
EXPECT_EQ(ErrorCode::OK, Update(ciphertext.substr(i, increment), &plaintext));
EXPECT_EQ(ErrorCode::OK, Finish(&plaintext));
EXPECT_EQ(ciphertext.size(), plaintext.size());
EXPECT_EQ(message, plaintext);
}
INSTANTIATE_KEYMINT_AIDL_TEST(EncryptionOperationsTest);
typedef KeyMintAidlTestBase MaxOperationsTest;
/*
* MaxOperationsTest.TestLimitAes
*
* Verifies that the max uses per boot tag works correctly with AES keys.
*/
TEST_P(MaxOperationsTest, TestLimitAes) {
if (SecLevel() == SecurityLevel::STRONGBOX) return;
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.Authorization(TAG_NO_AUTH_REQUIRED)
.AesEncryptionKey(128)
.EcbMode()
.Padding(PaddingMode::NONE)
.Authorization(TAG_MAX_USES_PER_BOOT, 3)));
string message = "1234567890123456";
auto params = AuthorizationSetBuilder().EcbMode().Padding(PaddingMode::NONE);
EncryptMessage(message, params);
EncryptMessage(message, params);
EncryptMessage(message, params);
// Fourth time should fail.
EXPECT_EQ(ErrorCode::KEY_MAX_OPS_EXCEEDED, Begin(KeyPurpose::ENCRYPT, params));
}
/*
* MaxOperationsTest.TestLimitRsa
*
* Verifies that the max uses per boot tag works correctly with RSA keys.
*/
TEST_P(MaxOperationsTest, TestLimitRsa) {
if (SecLevel() == SecurityLevel::STRONGBOX) return;
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.Authorization(TAG_NO_AUTH_REQUIRED)
.RsaSigningKey(1024, 65537)
.NoDigestOrPadding()
.Authorization(TAG_MAX_USES_PER_BOOT, 3)
.SetDefaultValidity()));
string message = "1234567890123456";
auto params = AuthorizationSetBuilder().NoDigestOrPadding();
SignMessage(message, params);
SignMessage(message, params);
SignMessage(message, params);
// Fourth time should fail.
EXPECT_EQ(ErrorCode::KEY_MAX_OPS_EXCEEDED, Begin(KeyPurpose::SIGN, params));
}
INSTANTIATE_KEYMINT_AIDL_TEST(MaxOperationsTest);
typedef KeyMintAidlTestBase UsageCountLimitTest;
/*
* UsageCountLimitTest.TestSingleUseAes
*
* Verifies that the usage count limit tag = 1 works correctly with AES keys.
*/
TEST_P(UsageCountLimitTest, TestSingleUseAes) {
if (SecLevel() == SecurityLevel::STRONGBOX) return;
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.Authorization(TAG_NO_AUTH_REQUIRED)
.AesEncryptionKey(128)
.EcbMode()
.Padding(PaddingMode::NONE)
.Authorization(TAG_USAGE_COUNT_LIMIT, 1)));
// Check the usage count limit tag appears in the authorizations.
AuthorizationSet auths;
for (auto& entry : key_characteristics_) {
auths.push_back(AuthorizationSet(entry.authorizations));
}
EXPECT_TRUE(auths.Contains(TAG_USAGE_COUNT_LIMIT, 1U))
<< "key usage count limit " << 1U << " missing";
string message = "1234567890123456";
auto params = AuthorizationSetBuilder().EcbMode().Padding(PaddingMode::NONE);
AuthorizationSet hardware_auths = HwEnforcedAuthorizations(key_characteristics_);
AuthorizationSet keystore_auths =
SecLevelAuthorizations(key_characteristics_, SecurityLevel::KEYSTORE);
// First usage of AES key should work.
EncryptMessage(message, params);
if (hardware_auths.Contains(TAG_USAGE_COUNT_LIMIT, 1U)) {
// Usage count limit tag is enforced by hardware. After using the key, the key blob
// must be invalidated from secure storage (such as RPMB partition).
EXPECT_EQ(ErrorCode::INVALID_KEY_BLOB, Begin(KeyPurpose::ENCRYPT, params));
} else {
// Usage count limit tag is enforced by keystore, keymint does nothing.
EXPECT_TRUE(keystore_auths.Contains(TAG_USAGE_COUNT_LIMIT, 1U));
EXPECT_EQ(ErrorCode::OK, Begin(KeyPurpose::ENCRYPT, params));
}
}
/*
* UsageCountLimitTest.TestLimitedUseAes
*
* Verifies that the usage count limit tag > 1 works correctly with AES keys.
*/
TEST_P(UsageCountLimitTest, TestLimitedUseAes) {
if (SecLevel() == SecurityLevel::STRONGBOX) return;
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.Authorization(TAG_NO_AUTH_REQUIRED)
.AesEncryptionKey(128)
.EcbMode()
.Padding(PaddingMode::NONE)
.Authorization(TAG_USAGE_COUNT_LIMIT, 3)));
// Check the usage count limit tag appears in the authorizations.
AuthorizationSet auths;
for (auto& entry : key_characteristics_) {
auths.push_back(AuthorizationSet(entry.authorizations));
}
EXPECT_TRUE(auths.Contains(TAG_USAGE_COUNT_LIMIT, 3U))
<< "key usage count limit " << 3U << " missing";
string message = "1234567890123456";
auto params = AuthorizationSetBuilder().EcbMode().Padding(PaddingMode::NONE);
AuthorizationSet hardware_auths = HwEnforcedAuthorizations(key_characteristics_);
AuthorizationSet keystore_auths =
SecLevelAuthorizations(key_characteristics_, SecurityLevel::KEYSTORE);
EncryptMessage(message, params);
EncryptMessage(message, params);
EncryptMessage(message, params);
if (hardware_auths.Contains(TAG_USAGE_COUNT_LIMIT, 3U)) {
// Usage count limit tag is enforced by hardware. After using the key, the key blob
// must be invalidated from secure storage (such as RPMB partition).
EXPECT_EQ(ErrorCode::INVALID_KEY_BLOB, Begin(KeyPurpose::ENCRYPT, params));
} else {
// Usage count limit tag is enforced by keystore, keymint does nothing.
EXPECT_TRUE(keystore_auths.Contains(TAG_USAGE_COUNT_LIMIT, 3U));
EXPECT_EQ(ErrorCode::OK, Begin(KeyPurpose::ENCRYPT, params));
}
}
/*
* UsageCountLimitTest.TestSingleUseRsa
*
* Verifies that the usage count limit tag = 1 works correctly with RSA keys.
*/
TEST_P(UsageCountLimitTest, TestSingleUseRsa) {
if (SecLevel() == SecurityLevel::STRONGBOX) return;
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.Authorization(TAG_NO_AUTH_REQUIRED)
.RsaSigningKey(1024, 65537)
.NoDigestOrPadding()
.Authorization(TAG_USAGE_COUNT_LIMIT, 1)
.SetDefaultValidity()));
// Check the usage count limit tag appears in the authorizations.
AuthorizationSet auths;
for (auto& entry : key_characteristics_) {
auths.push_back(AuthorizationSet(entry.authorizations));
}
EXPECT_TRUE(auths.Contains(TAG_USAGE_COUNT_LIMIT, 1U))
<< "key usage count limit " << 1U << " missing";
string message = "1234567890123456";
auto params = AuthorizationSetBuilder().NoDigestOrPadding();
AuthorizationSet hardware_auths = HwEnforcedAuthorizations(key_characteristics_);
AuthorizationSet keystore_auths =
SecLevelAuthorizations(key_characteristics_, SecurityLevel::KEYSTORE);
// First usage of RSA key should work.
SignMessage(message, params);
if (hardware_auths.Contains(TAG_USAGE_COUNT_LIMIT, 1U)) {
// Usage count limit tag is enforced by hardware. After using the key, the key blob
// must be invalidated from secure storage (such as RPMB partition).
EXPECT_EQ(ErrorCode::INVALID_KEY_BLOB, Begin(KeyPurpose::SIGN, params));
} else {
// Usage count limit tag is enforced by keystore, keymint does nothing.
EXPECT_TRUE(keystore_auths.Contains(TAG_USAGE_COUNT_LIMIT, 1U));
EXPECT_EQ(ErrorCode::OK, Begin(KeyPurpose::SIGN, params));
}
}
/*
* UsageCountLimitTest.TestLimitUseRsa
*
* Verifies that the usage count limit tag > 1 works correctly with RSA keys.
*/
TEST_P(UsageCountLimitTest, TestLimitUseRsa) {
if (SecLevel() == SecurityLevel::STRONGBOX) return;
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.Authorization(TAG_NO_AUTH_REQUIRED)
.RsaSigningKey(1024, 65537)
.NoDigestOrPadding()
.Authorization(TAG_USAGE_COUNT_LIMIT, 3)
.SetDefaultValidity()));
// Check the usage count limit tag appears in the authorizations.
AuthorizationSet auths;
for (auto& entry : key_characteristics_) {
auths.push_back(AuthorizationSet(entry.authorizations));
}
EXPECT_TRUE(auths.Contains(TAG_USAGE_COUNT_LIMIT, 3U))
<< "key usage count limit " << 3U << " missing";
string message = "1234567890123456";
auto params = AuthorizationSetBuilder().NoDigestOrPadding();
AuthorizationSet hardware_auths = HwEnforcedAuthorizations(key_characteristics_);
AuthorizationSet keystore_auths =
SecLevelAuthorizations(key_characteristics_, SecurityLevel::KEYSTORE);
SignMessage(message, params);
SignMessage(message, params);
SignMessage(message, params);
if (hardware_auths.Contains(TAG_USAGE_COUNT_LIMIT, 3U)) {
// Usage count limit tag is enforced by hardware. After using the key, the key blob
// must be invalidated from secure storage (such as RPMB partition).
EXPECT_EQ(ErrorCode::INVALID_KEY_BLOB, Begin(KeyPurpose::SIGN, params));
} else {
// Usage count limit tag is enforced by keystore, keymint does nothing.
EXPECT_TRUE(keystore_auths.Contains(TAG_USAGE_COUNT_LIMIT, 3U));
EXPECT_EQ(ErrorCode::OK, Begin(KeyPurpose::SIGN, params));
}
}
/*
* UsageCountLimitTest.TestSingleUseKeyAndRollbackResistance
*
* Verifies that when rollback resistance is supported by the KeyMint implementation with
* the secure hardware, the single use key with usage count limit tag = 1 must also be enforced
* in hardware.
*/
TEST_P(UsageCountLimitTest, TestSingleUseKeyAndRollbackResistance) {
if (SecLevel() == SecurityLevel::STRONGBOX) return;
auto error = GenerateKey(AuthorizationSetBuilder()
.RsaSigningKey(2048, 65537)
.Digest(Digest::NONE)
.Padding(PaddingMode::NONE)
.Authorization(TAG_NO_AUTH_REQUIRED)
.Authorization(TAG_ROLLBACK_RESISTANCE)
.SetDefaultValidity());
ASSERT_TRUE(error == ErrorCode::ROLLBACK_RESISTANCE_UNAVAILABLE || error == ErrorCode::OK);
if (error == ErrorCode::OK) {
// Rollback resistance is supported by KeyMint, verify it is enforced in hardware.
AuthorizationSet hardwareEnforced(SecLevelAuthorizations());
ASSERT_TRUE(hardwareEnforced.Contains(TAG_ROLLBACK_RESISTANCE));
ASSERT_EQ(ErrorCode::OK, DeleteKey());
// The KeyMint should also enforce single use key in hardware when it supports rollback
// resistance.
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.Authorization(TAG_NO_AUTH_REQUIRED)
.RsaSigningKey(1024, 65537)
.NoDigestOrPadding()
.Authorization(TAG_USAGE_COUNT_LIMIT, 1)
.SetDefaultValidity()));
// Check the usage count limit tag appears in the hardware authorizations.
AuthorizationSet hardware_auths = HwEnforcedAuthorizations(key_characteristics_);
EXPECT_TRUE(hardware_auths.Contains(TAG_USAGE_COUNT_LIMIT, 1U))
<< "key usage count limit " << 1U << " missing";
string message = "1234567890123456";
auto params = AuthorizationSetBuilder().NoDigestOrPadding();
// First usage of RSA key should work.
SignMessage(message, params);
// Usage count limit tag is enforced by hardware. After using the key, the key blob
// must be invalidated from secure storage (such as RPMB partition).
EXPECT_EQ(ErrorCode::INVALID_KEY_BLOB, Begin(KeyPurpose::SIGN, params));
}
}
INSTANTIATE_KEYMINT_AIDL_TEST(UsageCountLimitTest);
typedef KeyMintAidlTestBase AddEntropyTest;
/*
* AddEntropyTest.AddEntropy
*
* Verifies that the addRngEntropy method doesn't blow up. There's no way to test that entropy
* is actually added.
*/
TEST_P(AddEntropyTest, AddEntropy) {
string data = "foo";
EXPECT_TRUE(keyMint().addRngEntropy(vector<uint8_t>(data.begin(), data.end())).isOk());
}
/*
* AddEntropyTest.AddEmptyEntropy
*
* Verifies that the addRngEntropy method doesn't blow up when given an empty buffer.
*/
TEST_P(AddEntropyTest, AddEmptyEntropy) {
EXPECT_TRUE(keyMint().addRngEntropy(AidlBuf()).isOk());
}
/*
* AddEntropyTest.AddLargeEntropy
*
* Verifies that the addRngEntropy method doesn't blow up when given a largish amount of data.
*/
TEST_P(AddEntropyTest, AddLargeEntropy) {
EXPECT_TRUE(keyMint().addRngEntropy(AidlBuf(string(2 * 1024, 'a'))).isOk());
}
INSTANTIATE_KEYMINT_AIDL_TEST(AddEntropyTest);
typedef KeyMintAidlTestBase KeyDeletionTest;
/**
* KeyDeletionTest.DeleteKey
*
* This test checks that if rollback protection is implemented, DeleteKey invalidates a formerly
* valid key blob.
*/
TEST_P(KeyDeletionTest, DeleteKey) {
auto error = GenerateKey(AuthorizationSetBuilder()
.RsaSigningKey(2048, 65537)
.Digest(Digest::NONE)
.Padding(PaddingMode::NONE)
.Authorization(TAG_NO_AUTH_REQUIRED)
.Authorization(TAG_ROLLBACK_RESISTANCE)
.SetDefaultValidity());
ASSERT_TRUE(error == ErrorCode::ROLLBACK_RESISTANCE_UNAVAILABLE || error == ErrorCode::OK);
// Delete must work if rollback protection is implemented
if (error == ErrorCode::OK) {
AuthorizationSet hardwareEnforced(SecLevelAuthorizations());
ASSERT_TRUE(hardwareEnforced.Contains(TAG_ROLLBACK_RESISTANCE));
ASSERT_EQ(ErrorCode::OK, DeleteKey(true /* keep key blob */));
string message = "12345678901234567890123456789012";
AuthorizationSet begin_out_params;
EXPECT_EQ(ErrorCode::INVALID_KEY_BLOB,
Begin(KeyPurpose::SIGN, key_blob_,
AuthorizationSetBuilder().Digest(Digest::NONE).Padding(PaddingMode::NONE),
&begin_out_params));
AbortIfNeeded();
key_blob_ = AidlBuf();
}
}
/**
* KeyDeletionTest.DeleteInvalidKey
*
* This test checks that the HAL excepts invalid key blobs..
*/
TEST_P(KeyDeletionTest, DeleteInvalidKey) {
// Generate key just to check if rollback protection is implemented
auto error = GenerateKey(AuthorizationSetBuilder()
.RsaSigningKey(2048, 65537)
.Digest(Digest::NONE)
.Padding(PaddingMode::NONE)
.Authorization(TAG_NO_AUTH_REQUIRED)
.Authorization(TAG_ROLLBACK_RESISTANCE)
.SetDefaultValidity());
ASSERT_TRUE(error == ErrorCode::ROLLBACK_RESISTANCE_UNAVAILABLE || error == ErrorCode::OK);
// Delete must work if rollback protection is implemented
if (error == ErrorCode::OK) {
AuthorizationSet enforced(SecLevelAuthorizations());
ASSERT_TRUE(enforced.Contains(TAG_ROLLBACK_RESISTANCE));
// Delete the key we don't care about the result at this point.
DeleteKey();
// Now create an invalid key blob and delete it.
key_blob_ = AidlBuf("just some garbage data which is not a valid key blob");
ASSERT_EQ(ErrorCode::OK, DeleteKey());
}
}
/**
* KeyDeletionTest.DeleteAllKeys
*
* This test is disarmed by default. To arm it use --arm_deleteAllKeys.
*
* BEWARE: This test has serious side effects. All user keys will be lost! This includes
* FBE/FDE encryption keys, which means that the device will not even boot until after the
* device has been wiped manually (e.g., fastboot flashall -w), and new FBE/FDE keys have
* been provisioned. Use this test only on dedicated testing devices that have no valuable
* credentials stored in Keystore/Keymint.
*/
TEST_P(KeyDeletionTest, DeleteAllKeys) {
if (!arm_deleteAllKeys) return;
auto error = GenerateKey(AuthorizationSetBuilder()
.RsaSigningKey(2048, 65537)
.Digest(Digest::NONE)
.Padding(PaddingMode::NONE)
.Authorization(TAG_NO_AUTH_REQUIRED)
.Authorization(TAG_ROLLBACK_RESISTANCE));
ASSERT_TRUE(error == ErrorCode::ROLLBACK_RESISTANCE_UNAVAILABLE || error == ErrorCode::OK);
// Delete must work if rollback protection is implemented
if (error == ErrorCode::OK) {
AuthorizationSet hardwareEnforced(SecLevelAuthorizations());
ASSERT_TRUE(hardwareEnforced.Contains(TAG_ROLLBACK_RESISTANCE));
ASSERT_EQ(ErrorCode::OK, DeleteAllKeys());
string message = "12345678901234567890123456789012";
AuthorizationSet begin_out_params;
EXPECT_EQ(ErrorCode::INVALID_KEY_BLOB,
Begin(KeyPurpose::SIGN, key_blob_,
AuthorizationSetBuilder().Digest(Digest::NONE).Padding(PaddingMode::NONE),
&begin_out_params));
AbortIfNeeded();
key_blob_ = AidlBuf();
}
}
INSTANTIATE_KEYMINT_AIDL_TEST(KeyDeletionTest);
using UpgradeKeyTest = KeyMintAidlTestBase;
/*
* UpgradeKeyTest.UpgradeKey
*
* Verifies that calling upgrade key on an up-to-date key works (i.e. does nothing).
*/
TEST_P(UpgradeKeyTest, UpgradeKey) {
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.AesEncryptionKey(128)
.Padding(PaddingMode::NONE)
.Authorization(TAG_NO_AUTH_REQUIRED)));
auto result = UpgradeKey(key_blob_);
// Key doesn't need upgrading. Should get okay, but no new key blob.
EXPECT_EQ(result, std::make_pair(ErrorCode::OK, vector<uint8_t>()));
}
INSTANTIATE_KEYMINT_AIDL_TEST(UpgradeKeyTest);
using ClearOperationsTest = KeyMintAidlTestBase;
/*
* ClearSlotsTest.TooManyOperations
*
* Verifies that TOO_MANY_OPERATIONS is returned after the max number of
* operations are started without being finished or aborted. Also verifies
* that aborting the operations clears the operations.
*
*/
TEST_P(ClearOperationsTest, TooManyOperations) {
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.Authorization(TAG_NO_AUTH_REQUIRED)
.RsaEncryptionKey(2048, 65537)
.Padding(PaddingMode::NONE)
.SetDefaultValidity()));
auto params = AuthorizationSetBuilder().Padding(PaddingMode::NONE);
constexpr size_t max_operations = 100; // set to arbituary large number
std::shared_ptr<IKeyMintOperation> op_handles[max_operations];
AuthorizationSet out_params;
ErrorCode result;
size_t i;
for (i = 0; i < max_operations; i++) {
result = Begin(KeyPurpose::ENCRYPT, key_blob_, params, &out_params, op_handles[i]);
if (ErrorCode::OK != result) {
break;
}
}
EXPECT_EQ(ErrorCode::TOO_MANY_OPERATIONS, result);
// Try again just in case there's a weird overflow bug
EXPECT_EQ(ErrorCode::TOO_MANY_OPERATIONS,
Begin(KeyPurpose::ENCRYPT, key_blob_, params, &out_params));
for (size_t j = 0; j < i; j++) {
EXPECT_EQ(ErrorCode::OK, Abort(op_handles[j]))
<< "Aboort failed for i = " << j << std::endl;
}
EXPECT_EQ(ErrorCode::OK, Begin(KeyPurpose::ENCRYPT, key_blob_, params, &out_params));
AbortIfNeeded();
}
INSTANTIATE_KEYMINT_AIDL_TEST(ClearOperationsTest);
typedef KeyMintAidlTestBase TransportLimitTest;
/*
* TransportLimitTest.FinishInput
*
* Verifies that passing input data to finish succeeds as expected.
*/
TEST_P(TransportLimitTest, LargeFinishInput) {
ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
.Authorization(TAG_NO_AUTH_REQUIRED)
.AesEncryptionKey(128)
.BlockMode(BlockMode::ECB)
.Padding(PaddingMode::NONE)));
for (int msg_size = 8 /* 256 bytes */; msg_size <= 11 /* 2 KiB */; msg_size++) {
auto cipher_params =
AuthorizationSetBuilder().BlockMode(BlockMode::ECB).Padding(PaddingMode::NONE);
AuthorizationSet out_params;
EXPECT_EQ(ErrorCode::OK, Begin(KeyPurpose::ENCRYPT, cipher_params, &out_params));
string plain_message = std::string(1 << msg_size, 'x');
string encrypted_message;
auto rc = Finish(plain_message, &encrypted_message);
EXPECT_EQ(ErrorCode::OK, rc);
EXPECT_EQ(plain_message.size(), encrypted_message.size())
<< "Encrypt finish returned OK, but did not consume all of the given input";
cipher_params.push_back(out_params);
EXPECT_EQ(ErrorCode::OK, Begin(KeyPurpose::DECRYPT, cipher_params));
string decrypted_message;
rc = Finish(encrypted_message, &decrypted_message);
EXPECT_EQ(ErrorCode::OK, rc);
EXPECT_EQ(plain_message.size(), decrypted_message.size())
<< "Decrypt finish returned OK, did not consume all of the given input";
}
}
INSTANTIATE_KEYMINT_AIDL_TEST(TransportLimitTest);
typedef KeyMintAidlTestBase KeyAgreementTest;
int CurveToOpenSslCurveName(EcCurve curve) {
switch (curve) {
case EcCurve::P_224:
return NID_secp224r1;
case EcCurve::P_256:
return NID_X9_62_prime256v1;
case EcCurve::P_384:
return NID_secp384r1;
case EcCurve::P_521:
return NID_secp521r1;
}
}
/*
* KeyAgreementTest.Ecdh
*
* Verifies that ECDH works for all curves
*/
TEST_P(KeyAgreementTest, Ecdh) {
// Because it's possible to use this API with keys on different curves, we
// check all N^2 combinations where N is the number of supported
// curves.
//
// This is not a big deal as N is 4 so we only do 16 runs. If we end up with a
// lot more curves we can be smart about things and just pick |otherCurve| so
// it's not |curve| and that way we end up with only 2*N runs
//
for (auto curve : ValidCurves()) {
for (auto localCurve : ValidCurves()) {
// Generate EC key locally (with access to private key material)
auto ecKey = EC_KEY_Ptr(EC_KEY_new());
int curveName = CurveToOpenSslCurveName(localCurve);
auto group = EC_GROUP_Ptr(EC_GROUP_new_by_curve_name(curveName));
ASSERT_NE(group, nullptr);
ASSERT_EQ(EC_KEY_set_group(ecKey.get(), group.get()), 1);
ASSERT_EQ(EC_KEY_generate_key(ecKey.get()), 1);
auto pkey = EVP_PKEY_Ptr(EVP_PKEY_new());
ASSERT_EQ(EVP_PKEY_set1_EC_KEY(pkey.get(), ecKey.get()), 1);
// Get encoded form of the public part of the locally generated key...
unsigned char* p = nullptr;
int encodedPublicKeySize = i2d_PUBKEY(pkey.get(), &p);
ASSERT_GT(encodedPublicKeySize, 0);
vector<uint8_t> encodedPublicKey(
reinterpret_cast<const uint8_t*>(p),
reinterpret_cast<const uint8_t*>(p + encodedPublicKeySize));
OPENSSL_free(p);
// Generate EC key in KeyMint (only access to public key material)
vector<uint8_t> challenge = {0x41, 0x42};
EXPECT_EQ(
ErrorCode::OK,
GenerateKey(AuthorizationSetBuilder()
.Authorization(TAG_NO_AUTH_REQUIRED)
.Authorization(TAG_EC_CURVE, curve)
.Authorization(TAG_PURPOSE, KeyPurpose::AGREE_KEY)
.Authorization(TAG_ALGORITHM, Algorithm::EC)
.Authorization(TAG_ATTESTATION_APPLICATION_ID, {0x61, 0x62})
.Authorization(TAG_ATTESTATION_CHALLENGE, challenge)
.SetDefaultValidity()))
<< "Failed to generate key";
ASSERT_GT(cert_chain_.size(), 0);
X509_Ptr kmKeyCert(parse_cert_blob(cert_chain_[0].encodedCertificate));
ASSERT_NE(kmKeyCert, nullptr);
// Check that keyAgreement (bit 4) is set in KeyUsage
EXPECT_TRUE((X509_get_key_usage(kmKeyCert.get()) & X509v3_KU_KEY_AGREEMENT) != 0);
auto kmPkey = EVP_PKEY_Ptr(X509_get_pubkey(kmKeyCert.get()));
ASSERT_NE(kmPkey, nullptr);
if (dump_Attestations) {
for (size_t n = 0; n < cert_chain_.size(); n++) {
std::cout << bin2hex(cert_chain_[n].encodedCertificate) << std::endl;
}
}
// Now that we have the two keys, we ask KeyMint to perform ECDH...
if (curve != localCurve) {
// If the keys are using different curves KeyMint should fail with
// ErrorCode:INVALID_ARGUMENT. Check that.
EXPECT_EQ(ErrorCode::OK, Begin(KeyPurpose::AGREE_KEY, AuthorizationSetBuilder()));
string ZabFromKeyMintStr;
EXPECT_EQ(ErrorCode::INVALID_ARGUMENT,
Finish(string(encodedPublicKey.begin(), encodedPublicKey.end()),
&ZabFromKeyMintStr));
} else {
// Otherwise if the keys are using the same curve, it should work.
EXPECT_EQ(ErrorCode::OK, Begin(KeyPurpose::AGREE_KEY, AuthorizationSetBuilder()));
string ZabFromKeyMintStr;
EXPECT_EQ(ErrorCode::OK,
Finish(string(encodedPublicKey.begin(), encodedPublicKey.end()),
&ZabFromKeyMintStr));
vector<uint8_t> ZabFromKeyMint(ZabFromKeyMintStr.begin(), ZabFromKeyMintStr.end());
// Perform local ECDH between the two keys so we can check if we get the same Zab..
auto ctx = EVP_PKEY_CTX_Ptr(EVP_PKEY_CTX_new(pkey.get(), nullptr));
ASSERT_NE(ctx, nullptr);
ASSERT_EQ(EVP_PKEY_derive_init(ctx.get()), 1);
ASSERT_EQ(EVP_PKEY_derive_set_peer(ctx.get(), kmPkey.get()), 1);
size_t ZabFromTestLen = 0;
ASSERT_EQ(EVP_PKEY_derive(ctx.get(), nullptr, &ZabFromTestLen), 1);
vector<uint8_t> ZabFromTest;
ZabFromTest.resize(ZabFromTestLen);
ASSERT_EQ(EVP_PKEY_derive(ctx.get(), ZabFromTest.data(), &ZabFromTestLen), 1);
EXPECT_EQ(ZabFromKeyMint, ZabFromTest);
}
CheckedDeleteKey();
}
}
}
INSTANTIATE_KEYMINT_AIDL_TEST(KeyAgreementTest);
using EarlyBootKeyTest = KeyMintAidlTestBase;
TEST_P(EarlyBootKeyTest, CreateEarlyBootKeys) {
auto [aesKeyData, hmacKeyData, rsaKeyData, ecdsaKeyData] =
CreateTestKeys(TAG_EARLY_BOOT_ONLY, ErrorCode::OK);
CheckedDeleteKey(&aesKeyData.blob);
CheckedDeleteKey(&hmacKeyData.blob);
CheckedDeleteKey(&rsaKeyData.blob);
CheckedDeleteKey(&ecdsaKeyData.blob);
}
// This is a more comprenhensive test, but it can only be run on a machine which is still in early
// boot stage, which no proper Android device is by the time we can run VTS. To use this,
// un-disable it and modify vold to remove the call to earlyBootEnded(). Running the test will end
// early boot, so you'll have to reboot between runs.
TEST_P(EarlyBootKeyTest, DISABLED_FullTest) {
auto [aesKeyData, hmacKeyData, rsaKeyData, ecdsaKeyData] =
CreateTestKeys(TAG_EARLY_BOOT_ONLY, ErrorCode::OK);
// TAG_EARLY_BOOT_ONLY should be in hw-enforced.
EXPECT_TRUE(HwEnforcedAuthorizations(aesKeyData.characteristics).Contains(TAG_EARLY_BOOT_ONLY));
EXPECT_TRUE(
HwEnforcedAuthorizations(hmacKeyData.characteristics).Contains(TAG_EARLY_BOOT_ONLY));
EXPECT_TRUE(HwEnforcedAuthorizations(rsaKeyData.characteristics).Contains(TAG_EARLY_BOOT_ONLY));
EXPECT_TRUE(
HwEnforcedAuthorizations(ecdsaKeyData.characteristics).Contains(TAG_EARLY_BOOT_ONLY));
// Should be able to use keys, since early boot has not ended
EXPECT_EQ(ErrorCode::OK, UseAesKey(aesKeyData.blob));
EXPECT_EQ(ErrorCode::OK, UseHmacKey(hmacKeyData.blob));
EXPECT_EQ(ErrorCode::OK, UseRsaKey(rsaKeyData.blob));
EXPECT_EQ(ErrorCode::OK, UseEcdsaKey(ecdsaKeyData.blob));
// End early boot
ErrorCode earlyBootResult = GetReturnErrorCode(keyMint().earlyBootEnded());
EXPECT_EQ(earlyBootResult, ErrorCode::OK);
// Should not be able to use already-created keys.
EXPECT_EQ(ErrorCode::EARLY_BOOT_ENDED, UseAesKey(aesKeyData.blob));
EXPECT_EQ(ErrorCode::EARLY_BOOT_ENDED, UseHmacKey(hmacKeyData.blob));
EXPECT_EQ(ErrorCode::EARLY_BOOT_ENDED, UseRsaKey(rsaKeyData.blob));
EXPECT_EQ(ErrorCode::EARLY_BOOT_ENDED, UseEcdsaKey(ecdsaKeyData.blob));
CheckedDeleteKey(&aesKeyData.blob);
CheckedDeleteKey(&hmacKeyData.blob);
CheckedDeleteKey(&rsaKeyData.blob);
CheckedDeleteKey(&ecdsaKeyData.blob);
// Should not be able to create new keys
std::tie(aesKeyData, hmacKeyData, rsaKeyData, ecdsaKeyData) =
CreateTestKeys(TAG_EARLY_BOOT_ONLY, ErrorCode::EARLY_BOOT_ENDED);
CheckedDeleteKey(&aesKeyData.blob);
CheckedDeleteKey(&hmacKeyData.blob);
CheckedDeleteKey(&rsaKeyData.blob);
CheckedDeleteKey(&ecdsaKeyData.blob);
}
INSTANTIATE_KEYMINT_AIDL_TEST(EarlyBootKeyTest);
using UnlockedDeviceRequiredTest = KeyMintAidlTestBase;
// This may be a problematic test. It can't be run repeatedly without unlocking the device in
// between runs... and on most test devices there are no enrolled credentials so it can't be
// unlocked at all, meaning the only way to get the test to pass again on a properly-functioning
// device is to reboot it. For that reason, this is disabled by default. It can be used as part of
// a manual test process, which includes unlocking between runs, which is why it's included here.
// Well, that and the fact that it's the only test we can do without also making calls into the
// Gatekeeper HAL. We haven't written any cross-HAL tests, and don't know what all of the
// implications might be, so that may or may not be a solution.
TEST_P(UnlockedDeviceRequiredTest, DISABLED_KeysBecomeUnusable) {
auto [aesKeyData, hmacKeyData, rsaKeyData, ecdsaKeyData] =
CreateTestKeys(TAG_UNLOCKED_DEVICE_REQUIRED, ErrorCode::OK);
EXPECT_EQ(ErrorCode::OK, UseAesKey(aesKeyData.blob));
EXPECT_EQ(ErrorCode::OK, UseHmacKey(hmacKeyData.blob));
EXPECT_EQ(ErrorCode::OK, UseRsaKey(rsaKeyData.blob));
EXPECT_EQ(ErrorCode::OK, UseEcdsaKey(ecdsaKeyData.blob));
ErrorCode rc = GetReturnErrorCode(
keyMint().deviceLocked(false /* passwordOnly */, {} /* verificationToken */));
ASSERT_EQ(ErrorCode::OK, rc);
EXPECT_EQ(ErrorCode::DEVICE_LOCKED, UseAesKey(aesKeyData.blob));
EXPECT_EQ(ErrorCode::DEVICE_LOCKED, UseHmacKey(hmacKeyData.blob));
EXPECT_EQ(ErrorCode::DEVICE_LOCKED, UseRsaKey(rsaKeyData.blob));
EXPECT_EQ(ErrorCode::DEVICE_LOCKED, UseEcdsaKey(ecdsaKeyData.blob));
CheckedDeleteKey(&aesKeyData.blob);
CheckedDeleteKey(&hmacKeyData.blob);
CheckedDeleteKey(&rsaKeyData.blob);
CheckedDeleteKey(&ecdsaKeyData.blob);
}
INSTANTIATE_KEYMINT_AIDL_TEST(UnlockedDeviceRequiredTest);
using PerformOperationTest = KeyMintAidlTestBase;
TEST_P(PerformOperationTest, RequireUnimplemented) {
vector<uint8_t> response;
auto result = keymint_->performOperation({} /* request */, &response);
ASSERT_EQ(GetReturnErrorCode(result), ErrorCode::UNIMPLEMENTED);
}
INSTANTIATE_KEYMINT_AIDL_TEST(PerformOperationTest);
} // namespace aidl::android::hardware::security::keymint::test
int main(int argc, char** argv) {
std::cout << "Testing ";
auto halInstances =
aidl::android::hardware::security::keymint::test::KeyMintAidlTestBase::build_params();
std::cout << "HAL instances:\n";
for (auto& entry : halInstances) {
std::cout << " " << entry << '\n';
}
::testing::InitGoogleTest(&argc, argv);
for (int i = 1; i < argc; ++i) {
if (argv[i][0] == '-') {
if (std::string(argv[i]) == "--arm_deleteAllKeys") {
aidl::android::hardware::security::keymint::test::KeyMintAidlTestBase::
arm_deleteAllKeys = true;
}
if (std::string(argv[i]) == "--dump_attestations") {
aidl::android::hardware::security::keymint::test::KeyMintAidlTestBase::
dump_Attestations = true;
} else {
std::cout << "NOT dumping attestations" << std::endl;
}
}
}
return RUN_ALL_TESTS();
}
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