crossle
commented
3 years ago When you create SessionCipher, please use remote address on the last param.
Closed McCrafterIV closed 3 years ago
crossle
commented
3 years ago When you create SessionCipher, please use remote address on the last param.
McCrafterIV
commented
3 years ago When you create SessionCipher, please use remote address on the last param.
I followed your introductions but still get an Exception:
Unhandled exception:
Assertion failed: Instance of 'InvalidKeyException'
#0 SessionState.getSenderRatchetKey (package:libsignal_protocol_dart/src/state/session_state.dart:104:7)
#1 SessionCipher.encrypt (package:libsignal_protocol_dart/src/session_cipher.dart:58:42)
<asynchronous suspension>
#2 main (package:project/test.dart:132:29)
<asynchronous suspension>My code now looks the following:
import 'dart:convert';
import 'dart:typed_data';
import 'package:libsignal_protocol_dart/libsignal_protocol_dart.dart';
void main() async {
//
// BOB SETUP
//
final bobAddress = SignalProtocolAddress('bob', 1);
final bobIdentityKeyPair = generateIdentityKeyPair();
final bobRegistrationId = generateRegistrationId(false);
final bobPreKeys = generatePreKeys(0, 110);
final bobSignedPreKey = generateSignedPreKey(bobIdentityKeyPair, 0);
final bobPreKeyStore = InMemoryPreKeyStore();
final bobSessionStore = InMemorySessionStore();
final bobSignedPreKeyStore = InMemorySignedPreKeyStore();
final bobIdentityKeyStore =
InMemoryIdentityKeyStore(bobIdentityKeyPair, bobRegistrationId);
for (var p in bobPreKeys) {
await bobPreKeyStore.storePreKey(p.id, p);
}
await bobSignedPreKeyStore.storeSignedPreKey(
bobSignedPreKey.id,
bobSignedPreKey,
);
//
// JEAN SETUP
//
final jeanRegistrationId = generateRegistrationId(false);
final jeanIdentityKeyPair = generateIdentityKeyPair();
final jeanAddress = SignalProtocolAddress('jean', 1);
final jeanPreKeys = generatePreKeys(0, 110);
final jeanSignedPreKey = generateSignedPreKey(jeanIdentityKeyPair, 0);
final jeanPreKeyStore = InMemoryPreKeyStore();
final jeanSessionStore = InMemorySessionStore();
final jeanSignedPreKeyStore = InMemorySignedPreKeyStore();
final jeanIdentityKeyStore =
InMemoryIdentityKeyStore(jeanIdentityKeyPair, jeanRegistrationId);
final jeanSignalProtocolStore =
InMemorySignalProtocolStore(jeanIdentityKeyPair, 1);
for (var p in jeanPreKeys) {
await jeanSignalProtocolStore.storePreKey(p.id, p);
}
await jeanSignalProtocolStore.storeSignedPreKey(
jeanSignedPreKey.id, jeanSignedPreKey);
//
// ALICE SETUP
//
// Should get remote from the server
final aliceRegistrationId = generateRegistrationId(false);
final aliceIdentityKeyPair = generateIdentityKeyPair();
final aliceAddress = SignalProtocolAddress('alice', 1);
final alicePreKeys = generatePreKeys(0, 110);
final aliceSignedPreKey = generateSignedPreKey(aliceIdentityKeyPair, 0);
final aliceIdentityKeyStore =
InMemoryIdentityKeyStore(aliceIdentityKeyPair, aliceRegistrationId);
final aliceSignalProtocolStore =
InMemorySignalProtocolStore(aliceIdentityKeyPair, 1);
for (var p in alicePreKeys) {
await aliceSignalProtocolStore.storePreKey(p.id, p);
}
await aliceSignalProtocolStore.storeSignedPreKey(
aliceSignedPreKey.id, aliceSignedPreKey);
//
// Preparing connection
//
final bobSessionBuilder = SessionBuilder(
bobSessionStore,
bobPreKeyStore,
bobSignedPreKeyStore,
bobIdentityKeyStore,
bobAddress,
);
await bobSessionBuilder.processPreKeyBundle(
PreKeyBundle(
aliceRegistrationId,
1,
alicePreKeys[0].id,
alicePreKeys[0].getKeyPair().publicKey,
aliceSignedPreKey.id,
aliceSignedPreKey.getKeyPair().publicKey,
aliceSignedPreKey.signature,
aliceIdentityKeyPair.getPublicKey(),
),
);
final jeanSessionBuilder = SessionBuilder(
jeanSessionStore,
jeanPreKeyStore,
jeanSignedPreKeyStore,
jeanIdentityKeyStore,
jeanAddress,
);
await jeanSessionBuilder.processPreKeyBundle(
PreKeyBundle(
aliceRegistrationId,
1,
alicePreKeys[0].id,
alicePreKeys[0].getKeyPair().publicKey,
aliceSignedPreKey.id,
aliceSignedPreKey.getKeyPair().publicKey,
aliceSignedPreKey.signature,
aliceIdentityKeyPair.getPublicKey(),
),
);
//
// ENCRYPTION
//
final bobSessionCipher = SessionCipher(
bobSessionStore,
bobPreKeyStore,
bobSignedPreKeyStore,
bobIdentityKeyStore,
aliceAddress,
);
final ciphertextFromBob = await bobSessionCipher
.encrypt(Uint8List.fromList(utf8.encode('Hello from Bob')));
final jeanSessionCipher = SessionCipher(
jeanSessionStore,
jeanPreKeyStore,
jeanSignedPreKeyStore,
jeanIdentityKeyStore,
aliceAddress,
);
final ciphertextFromJean = await jeanSessionCipher
.encrypt(Uint8List.fromList(utf8.encode('Hello from Jean')));
//
// DECRYPTION
//
final aliceSessionCipher1 = SessionCipher(
aliceSignalProtocolStore.sessionStore,
aliceSignalProtocolStore.preKeyStore,
aliceSignalProtocolStore.signedPreKeyStore,
aliceIdentityKeyStore,
bobAddress,
);
final aliceSessionCipher2 = SessionCipher(
aliceSignalProtocolStore.sessionStore,
aliceSignalProtocolStore.preKeyStore,
aliceSignalProtocolStore.signedPreKeyStore,
aliceIdentityKeyStore,
jeanAddress,
);
if (ciphertextFromBob.getType() == CiphertextMessage.prekeyType) {
await aliceSessionCipher1.decryptWithCallback(
ciphertextFromBob as PreKeySignalMessage, (plaintext) {
// ignore: avoid_print
print(utf8.decode(plaintext));
});
}
if (ciphertextFromJean.getType() == CiphertextMessage.prekeyType) {
await aliceSessionCipher2.decryptWithCallback(
ciphertextFromJean as PreKeySignalMessage, (plaintext) {
// ignore: avoid_print
print(utf8.decode(plaintext));
});
}
}What am I doing wrong now?
crossle
commented
3 years ago When you create SessionBuilder should use remote address on the last param.
final bobSessionBuilder = SessionBuilder(
bobSessionStore,
bobPreKeyStore,
bobSignedPreKeyStore,
bobIdentityKeyStore,
aliceAddress,
);Now it works, thanks!
I after that got InvalidKeyIdException - No such prekeyrecord! - 0 which was fixed by using the preKey index 1 (or any one that wasn't used before, since pre keys can only be used once) on the jeanSessionBuilder. For everyone interested, this is the now fixed and working code:
I want to create an encrypted chat app. In the example below which reproduces the error, Bob and Jean want to send a message to Alice. The first message (in this case from Bob) can be decrypted without any problems, but the second message (from Jean) fails with the following
UntrustedIdentityExceptionexception:This is the code I used to reproduces the error:
How can I resolve this issue? What have I done/understood wrong?
Thanks in advance