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MessaageSender: use of session protocol for closed groups

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This commit is contained in:
Brice 2021-01-14 13:20:18 +11:00
parent 6f22c3d6e3
commit 3357672516
4 changed files with 17 additions and 5 deletions
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4
app/src/main/java/org/thoughtcrime/securesms/database/Storage.kt
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@ -272,6 +272,10 @@ class Storage(val context: Context): StorageProtocol {
TODO("Not yet implemented")
}
override fun getLatestClosedGroupEncryptionKeyPair(groupPublicKey: String): ECKeyPair {
TODO("Not yet implemented")
}
override fun setProfileSharing(address: Address, value: Boolean) {
val recipient = Recipient.from(context, address, false)
DatabaseFactory.getRecipientDatabase(context).setProfileSharing(recipient, value)

1
libsession/src/main/java/org/session/libsession/messaging/StorageProtocol.kt
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@ -104,6 +104,7 @@ interface StorageProtocol {
members: Collection<String>, admins: Collection<String>, threadID: Long)
fun isClosedGroup(publicKey: String): Boolean //TODO
fun getClosedGroupEncryptionKeyPairs(groupPublicKey: String): MutableList<ECKeyPair> //TODO
fun getLatestClosedGroupEncryptionKeyPair(groupPublicKey: String): ECKeyPair //TODO
// Settings
fun setProfileSharing(address: Address, value: Boolean)

13
libsession/src/main/java/org/session/libsession/messaging/sending_receiving/MessageSender.kt
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@ -23,6 +23,7 @@ import org.session.libsignal.service.api.messages.SignalServiceAttachment
import org.session.libsignal.service.internal.push.SignalServiceProtos
import org.session.libsignal.service.internal.util.Base64
import org.session.libsignal.service.loki.api.crypto.ProofOfWork
import org.session.libsignal.service.loki.utilities.hexEncodedPublicKey
object MessageSender {
@ -32,7 +33,10 @@ object MessageSender {
object InvalidMessage : Error("Invalid message.")
object ProtoConversionFailed : Error("Couldn't convert message to proto.")
object ProofOfWorkCalculationFailed : Error("Proof of work calculation failed.")
object NoUserPublicKey : Error("Couldn't find user key pair.")
object NoUserX25519KeyPair : Error("Couldn't find user X25519 key pair.")
object NoUserED25519KeyPair : Error("Couldn't find user ED25519 key pair.")
object SigningFailed : Error("Couldn't sign message.")
object EncryptionFailed : Error("Couldn't encrypt message.")
// Closed groups
object NoThread : Error("Couldn't find a thread associated with the given group public key.")
@ -71,7 +75,7 @@ object MessageSender {
var snodeMessage: SnodeMessage? = null
// Set the timestamp, sender and recipient
message.sentTimestamp ?: run { message.sentTimestamp = System.currentTimeMillis() } /* Visible messages will already have their sent timestamp set */
message.sender = storage.getUserPublicKey()
message.sender = userPublicKey
try {
when (destination) {
is Destination.Contact -> message.recipient = destination.publicKey
@ -117,7 +121,10 @@ object MessageSender {
val ciphertext: ByteArray
when (destination) {
is Destination.Contact -> ciphertext = MessageSenderEncryption.encryptWithSessionProtocol(plaintext, destination.publicKey)
is Destination.ClosedGroup -> ciphertext = MessageSenderEncryption.encryptWithSharedSenderKeys(plaintext, destination.groupPublicKey)
is Destination.ClosedGroup -> {
val encryptionKeyPair = MessagingConfiguration.shared.storage.getLatestClosedGroupEncryptionKeyPair(destination.groupPublicKey)
ciphertext = MessageSenderEncryption.encryptWithSessionProtocol(plaintext, encryptionKeyPair.hexEncodedPublicKey)
}
is Destination.OpenGroup -> throw preconditionFailure
}
// Wrap the result

4
libsession/src/main/java/org/session/libsession/messaging/sending_receiving/MessageSenderEncryption.kt
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@ -38,7 +38,7 @@ object MessageSenderEncryption {
return MessagingConfiguration.shared.sessionProtocol.encrypt(plaintext, recipientPublicKey)
}
internal fun encryptWithSharedSenderKeys(plaintext: ByteArray, groupPublicKey: String): ByteArray {
/*internal fun encryptWithSharedSenderKeys(plaintext: ByteArray, groupPublicKey: String): ByteArray {
// 1. ) Encrypt the data with the user's sender key
val userPublicKey = MessagingConfiguration.shared.storage.getUserPublicKey() ?: throw Error.NoUserPublicKey
val ciphertextAndKeyIndex = SharedSenderKeysImplementation.shared.encrypt(plaintext, groupPublicKey, userPublicKey)
@ -52,5 +52,5 @@ object MessageSenderEncryption {
.setCiphertext(ByteString.copyFrom(intermediate.ciphertext))
.setEphemeralPublicKey(ByteString.copyFrom(intermediate.ephemeralPublicKey))
.build().toByteArray()
}
}*/
}