/**
* Build a new session from a received {@link org.whispersystems.libaxolotl.protocol.PreKeyWhisperMessage}.
*
* After a session is constructed in this way, the embedded {@link org.whispersystems.libaxolotl.protocol.WhisperMessage}
* can be decrypted.
*
* @param message The received {@link org.whispersystems.libaxolotl.protocol.PreKeyWhisperMessage}.
* @throws org.whispersystems.libaxolotl.InvalidKeyIdException when there is no local
* {@link org.whispersystems.libaxolotl.state.PreKeyRecord}
* that corresponds to the PreKey ID in
* the message.
* @throws org.whispersystems.libaxolotl.InvalidKeyException when the message is formatted incorrectly.
* @throws org.whispersystems.libaxolotl.UntrustedIdentityException when the {@link IdentityKey} of the sender is untrusted.
*/
/*package*/
internal May <uint> Process(SessionRecord sessionRecord, PreKeyWhisperMessage message)
{
uint messageVersion = message.GetMessageVersion();
IdentityKey theirIdentityKey = message.GetIdentityKey();
May <uint> unsignedPreKeyId;
if (!identityKeyStore.IsTrustedIdentity(remoteAddress.GetName(), theirIdentityKey))
{
throw new UntrustedIdentityException(remoteAddress.GetName(), theirIdentityKey);
}
switch (messageVersion)
{
case 2:
unsignedPreKeyId = ProcessV2(sessionRecord, message);
break;
case 3:
unsignedPreKeyId = ProcessV3(sessionRecord, message);
break;
default:
throw new Exception("Unknown version: " + messageVersion);
}
identityKeyStore.SaveIdentity(remoteAddress.GetName(), theirIdentityKey);
return(unsignedPreKeyId);
}
public IdentityKeyPair(byte[] serialized)
{
try
{
IdentityKeyPairStructure structure = IdentityKeyPairStructure.ParseFrom(serialized);
this.publicKey = new IdentityKey(structure.PublicKey.ToByteArray(), 0);
this.privateKey = Curve.DecodePrivatePoint(structure.PrivateKey.ToByteArray());
}
catch (InvalidProtocolBufferException e)
{
throw new InvalidKeyException(e);
}
}
public IdentityKeyPair(IdentityKey publicKey, ECPrivateKey privateKey)
{
this.publicKey = publicKey;
this.privateKey = privateKey;
}