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Backup: introduce Aes256 algorithm

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ganfra 2022-08-10 19:19:20 +02:00 committed by Valere
parent c055f40607
commit 92faf3bca3
2 changed files with 58 additions and 1 deletions
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57
matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/crypto/keysbackup/algorithm/KeysBackupAes256Algorithm.kt Normal file
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@ -0,0 +1,57 @@
/*
* Copyright (c) 2022 New Vector Ltd
*
* 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.
*/
package org.matrix.android.sdk.internal.crypto.keysbackup.algorithm
import org.matrix.android.sdk.api.crypto.MXCRYPTO_ALGORITHM_AES_256_BACKUP
import org.matrix.android.sdk.api.session.crypto.keysbackup.KeysVersionResult
import org.matrix.android.sdk.api.session.crypto.keysbackup.MegolmBackupAes256AuthData
import org.matrix.android.sdk.api.session.crypto.keysbackup.MegolmBackupAuthData
import org.matrix.android.sdk.api.util.JsonDict
import org.matrix.android.sdk.internal.crypto.MegolmSessionData
import org.matrix.android.sdk.internal.crypto.keysbackup.model.rest.KeysBackupData
internal class KeysBackupAes256Algorithm(keysVersions: KeysVersionResult) : KeysBackupAlgorithm {
override val untrusted: Boolean = true
private val aesAuthData: MegolmBackupAes256AuthData
init {
if (keysVersions.algorithm != MXCRYPTO_ALGORITHM_AES_256_BACKUP) {
throw IllegalStateException("Algorithm doesn't match")
}
aesAuthData = keysVersions.getAuthDataAsMegolmBackupAuthData() as MegolmBackupAes256AuthData
}
override fun encryptSession(sessionData: MegolmSessionData): JsonDict? {
TODO("Not yet implemented")
}
override fun decryptSessions(recoveryKey: String, data: KeysBackupData): List<MegolmSessionData> {
TODO("Not yet implemented")
}
override fun release() {
TODO("Not yet implemented")
}
override val authData: MegolmBackupAuthData = aesAuthData
override fun keyMatches(key: String): Boolean {
TODO("Not yet implemented")
}
}

2
matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/crypto/keysbackup/algorithm/KeysBackupAlgorithmFactory.kt
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@ -29,7 +29,7 @@ internal class KeysBackupAlgorithmFactory @Inject constructor() {
KeysBackupCurve25519Algorithm(keysVersion)
}
MXCRYPTO_ALGORITHM_AES_256_BACKUP -> {
throw IllegalStateException("AES_256 is not yet handled")
KeysBackupAes256Algorithm(keysVersion)
}
else -> {
throw IllegalStateException("Unknown algorithm")