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Remove old unused algorithm m.secret_storage.v1.curve25519-aes-sha2

Browse source 
https://github.com/uhoreg/matrix-doc/blob/symmetric_ssss/proposals/2472-symmetric-ssss.md
"The m.secret_storage.v1.curve25519-aes-sha2 method proposed in MSC1946 is removed."
This commit is contained in:
Benoit Marty 2024-09-10 10:11:36 +02:00 committed by Benoit Marty
parent 15c86f3fe3
commit 637a2271ef
2 changed files with 2 additions and 29 deletions
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5
matrix-sdk-android/src/main/java/org/matrix/android/sdk/api/crypto/CryptoConstants.kt
View file

@ -31,11 +31,6 @@ const val MXCRYPTO_ALGORITHM_MEGOLM = "m.megolm.v1.aes-sha2"
*/
const val MXCRYPTO_ALGORITHM_MEGOLM_BACKUP = "m.megolm_backup.v1.curve25519-aes-sha2"
/**
* Secured Shared Storage algorithm constant.
*/
const val SSSS_ALGORITHM_CURVE25519_AES_SHA2 = "m.secret_storage.v1.curve25519-aes-sha2"
/* Secrets are encrypted using AES-CTR-256 and MACed using HMAC-SHA-256. **/
const val SSSS_ALGORITHM_AES_HMAC_SHA2 = "m.secret_storage.v1.aes-hmac-sha2"

26
matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/crypto/secrets/DefaultSharedSecretStorageService.kt
View file

@ -20,7 +20,6 @@ import kotlinx.coroutines.CoroutineScope
import kotlinx.coroutines.withContext
import org.matrix.android.sdk.api.MatrixCoroutineDispatchers
import org.matrix.android.sdk.api.crypto.SSSS_ALGORITHM_AES_HMAC_SHA2
import org.matrix.android.sdk.api.crypto.SSSS_ALGORITHM_CURVE25519_AES_SHA2
import org.matrix.android.sdk.api.extensions.orFalse
import org.matrix.android.sdk.api.listeners.ProgressListener
import org.matrix.android.sdk.api.session.accountdata.SessionAccountDataService
@ -319,27 +318,7 @@ internal class DefaultSharedSecretStorageService @Inject constructor(
?: throw SharedSecretStorageError.ParsingError
val algorithm = key.keyInfo.content
if (SSSS_ALGORITHM_CURVE25519_AES_SHA2 == algorithm.algorithm) {
// TODO BMA
// val keySpec = secretKey as? RawBytesKeySpec ?: throw SharedSecretStorageError.BadKeyFormat
return withContext(cryptoCoroutineScope.coroutineContext + coroutineDispatchers.computation) {
// decrypt from recovery key
"TODO"
// TODO BMA
/*
withOlmDecryption { olmPkDecryption ->
olmPkDecryption.setPrivateKey(keySpec.privateKey)
olmPkDecryption.decrypt(OlmPkMessage()
.apply {
mCipherText = secretContent.ciphertext
mEphemeralKey = secretContent.ephemeral
mMac = secretContent.mac
}
)
}
*/
}
} else if (SSSS_ALGORITHM_AES_HMAC_SHA2 == algorithm.algorithm) {
if (SSSS_ALGORITHM_AES_HMAC_SHA2 == algorithm.algorithm) {
val keySpec = secretKey as? RawBytesKeySpec ?: throw SharedSecretStorageError.BadKeyFormat
return withContext(cryptoCoroutineScope.coroutineContext + coroutineDispatchers.computation) {
decryptAesHmacSha2(keySpec, name, secretContent)
@ -369,8 +348,7 @@ internal class DefaultSharedSecretStorageService @Inject constructor(
val keyInfo = (keyInfoResult as? KeyInfoResult.Success)?.keyInfo
?: return IntegrityResult.Error(SharedSecretStorageError.UnknownKey(keyId ?: ""))
if (keyInfo.content.algorithm != SSSS_ALGORITHM_AES_HMAC_SHA2 &&
keyInfo.content.algorithm != SSSS_ALGORITHM_CURVE25519_AES_SHA2) {
if (keyInfo.content.algorithm != SSSS_ALGORITHM_AES_HMAC_SHA2) {
// Unsupported algorithm
return IntegrityResult.Error(
SharedSecretStorageError.UnsupportedAlgorithm(keyInfo.content.algorithm ?: "")