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Merge "Updated the description on Root of Trust Binding." am: 0ba8531279 am: f6c6fc7830

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Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/2080599

Change-Id: Id7e9ffe8861b54363fc75afe3d86a4748fa4efad
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>
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Treehugger Robot
2022-05-09 18:47:19 +00:00
committed by Automerger Merge Worker
parent 5d78414015 f6c6fc7830
commit da91112339
1 changed files with 6 additions and 6 deletions
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12
security/keymint/aidl/android/hardware/security/keymint/IKeyMintDevice.aidl
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@@ -196,12 +196,12 @@ import android.hardware.security.secureclock.TimeStampToken;
* derive a key that is used to encrypt the private/secret key material.
*
* The root of trust consists of a bitstring that must be derived from the public key used by
* Verified Boot to verify the signature on the boot image and from the lock state of the
* device. If the public key is changed to allow a different system image to be used or if the
* lock state is changed, then all of the IKeyMintDevice-protected keys created by the previous
* system state must be unusable, unless the previous state is restored. The goal is to increase
* the value of the software-enforced key access controls by making it impossible for an attacker-
* installed operating system to use IKeyMintDevice keys.
* Verified Boot to verify the signature on the boot image, from the lock state and from the
* Verified Boot state of the device. If the public key is changed to allow a different system
* image to be used or if the lock state is changed, then all of the IKeyMintDevice-protected keys
* created by the previous system state must be unusable, unless the previous state is restored.
* The goal is to increase the value of the software-enforced key access controls by making it
* impossible for an attacker-installed operating system to use IKeyMintDevice keys.
*
* == Version Binding ==
*