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Commit 0573cdea authored by Eric Biggers's avatar Eric Biggers Committed by Automerger Merge Worker
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Merge "SyntheticPasswordManager: rename derivePassword() to deriveSubkey()" am: a2f9e65a 

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/2132301



Change-Id: Ibcb7bcbc87ae4754adf311beaaef1c2f0f5ce105
Signed-off-by: default avatarAutomerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>
parents f303e2db a2f9e65a

services/core/java/com/android/server/locksettings/SyntheticPasswordManager.java

+11 −7
Original line number Diff line number Diff line
@@ -186,7 +186,11 @@ public class SyntheticPasswordManager { 
            mVersion = version;

        }



        private byte[] derivePassword(byte[] personalization) {

        /**

         * Derives a subkey from the synthetic password. For v3 and later synthetic passwords the

         * subkeys are 256-bit; for v1 and v2 they are 512-bit.

         */

        private byte[] deriveSubkey(byte[] personalization) {

            if (mVersion == SYNTHETIC_PASSWORD_VERSION_V3) {

                return (new SP800Derive(mSyntheticPassword))

                    .withContext(personalization, PERSONALISATION_CONTEXT);
@@ -197,28 +201,28 @@ public class SyntheticPasswordManager { 
        }



        public byte[] deriveKeyStorePassword() {

            return bytesToHex(derivePassword(PERSONALIZATION_KEY_STORE_PASSWORD));

            return bytesToHex(deriveSubkey(PERSONALIZATION_KEY_STORE_PASSWORD));

        }



        public byte[] deriveGkPassword() {

            return derivePassword(PERSONALIZATION_SP_GK_AUTH);

            return deriveSubkey(PERSONALIZATION_SP_GK_AUTH);

        }



        public byte[] deriveDiskEncryptionKey() {

            return derivePassword(PERSONALIZATION_FBE_KEY);

            return deriveSubkey(PERSONALIZATION_FBE_KEY);

        }



        public byte[] deriveVendorAuthSecret() {

            return derivePassword(PERSONALIZATION_AUTHSECRET_KEY);

            return deriveSubkey(PERSONALIZATION_AUTHSECRET_KEY);

        }



        public byte[] derivePasswordHashFactor() {

            return derivePassword(PERSONALIZATION_PASSWORD_HASH);

            return deriveSubkey(PERSONALIZATION_PASSWORD_HASH);

        }



        /** Derives key used to encrypt password metrics */

        public byte[] deriveMetricsKey() {

            return derivePassword(PERSONALIZATION_PASSWORD_METRICS);

            return deriveSubkey(PERSONALIZATION_PASSWORD_METRICS);

        }



        /**