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Fix typos in KM4 interface definition documentation

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Test: N/A
Change-Id: I037ae8bc8cd35479a8e19af2f4651206fb02fda9
This commit is contained in:
Janis Danisevskis
2017-12-27 09:09:38 -08:00
parent a2d9704cff
commit d29fb73c14
1 changed files with 2 additions and 2 deletions
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4
keymaster/4.0/IKeymasterDevice.hal
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@@ -54,7 +54,7 @@ interface IKeymasterDevice {
* device with a StrongBox Keymaster has two Keymasters instances, because there must be a TEE
* Keymaster as well. The HMAC key used to MAC and verify authentication tokens must be shared
* between TEE and StrongBox so they can each validate tokens produced by the other. This
* method is the second and final step in the process for for agreeing on a shared key. It is
* method is the second and final step in the process for agreeing on a shared key. It is
* called by Keystore during startup if and only if Keystore loads multiple Keymaster HALs.
* Keystore calls it on each of the HAL instances, and sends to it all of the
* HmacSharingParameters returned by all HALs.
@@ -94,7 +94,7 @@ interface IKeymasterDevice {
* Any method of securely establishing K that ensures that an attacker cannot obtain or
* derive its value is acceptable. What follows is a recommended approach, to be executed
* during each factory reset. It relies on use of the factory-installed attestation keys to
* mitigate man-in-the-middle attacks. This protocol requires that one of the instancess
* mitigate man-in-the-middle attacks. This protocol requires that one of the instances
* have secure persistent storage. This model was chosen because StrongBox has secure
* persistent storage (by definition), but the TEE may not. The instance without storage is
* assumed to be able to derive a unique hardware-bound key (HBK) which is used only for