private May <uint> ProcessV3(SessionRecord sessionRecord, PreKeyWhisperMessage message)
{
if (sessionRecord.HasSessionState(message.GetMessageVersion(), message.GetBaseKey().Serialize()))
{
return(May <uint> .NoValue);
}
SignedPreKeyRecord signedPreKeyRecord = signedPreKeyStore.LoadSignedPreKey(message.GetSignedPreKeyId());
ECKeyPair ourSignedPreKey = signedPreKeyRecord.GetKeyPair();
BobAxolotlParameters.Builder parameters = BobAxolotlParameters.NewBuilder();
parameters.SetTheirBaseKey(message.GetBaseKey())
.SetTheirIdentityKey(message.GetIdentityKey())
.SetOurIdentityKey(identityKeyStore.GetIdentityKeyPair())
.SetOurSignedPreKey(ourSignedPreKey)
.SetOurRatchetKey(ourSignedPreKey);
if (message.GetPreKeyId().HasValue)
{
parameters.SetOurOneTimePreKey(new May <ECKeyPair>(preKeyStore.LoadPreKey(message.GetPreKeyId().ForceGetValue()).GetKeyPair()));
}
else
{
parameters.SetOurOneTimePreKey(May <ECKeyPair> .NoValue);
}
if (!sessionRecord.IsFresh())
{
sessionRecord.ArchiveCurrentState();
}
RatchetingSession.InitializeSession(sessionRecord.GetSessionState(), message.GetMessageVersion(), parameters.Create());
sessionRecord.GetSessionState().SetLocalRegistrationId(identityKeyStore.GetLocalRegistrationId());
sessionRecord.GetSessionState().SetRemoteRegistrationId(message.GetRegistrationId());
sessionRecord.GetSessionState().SetAliceBaseKey(message.GetBaseKey().Serialize());
if (message.GetPreKeyId().HasValue&& message.GetPreKeyId().ForceGetValue() != Medium.MAX_VALUE)
{
return(message.GetPreKeyId());
}
else
{
return(May <uint> .NoValue);
}
}
private May <uint> ProcessV2(SessionRecord sessionRecord, PreKeyWhisperMessage message)
{
if (!message.GetPreKeyId().HasValue)
{
throw new InvalidKeyIdException("V2 message requires one time prekey id!");
}
if (!preKeyStore.ContainsPreKey(message.GetPreKeyId().ForceGetValue()) &&
sessionStore.ContainsSession(remoteAddress))
{
return(May <uint> .NoValue);
}
ECKeyPair ourPreKey = preKeyStore.LoadPreKey(message.GetPreKeyId().ForceGetValue()).GetKeyPair();
BobAxolotlParameters.Builder parameters = BobAxolotlParameters.NewBuilder();
parameters.SetOurIdentityKey(identityKeyStore.GetIdentityKeyPair())
.SetOurSignedPreKey(ourPreKey)
.SetOurRatchetKey(ourPreKey)
.SetOurOneTimePreKey(May <ECKeyPair> .NoValue) //absent
.SetTheirIdentityKey(message.GetIdentityKey())
.SetTheirBaseKey(message.GetBaseKey());
if (!sessionRecord.IsFresh())
{
sessionRecord.ArchiveCurrentState();
}
RatchetingSession.InitializeSession(sessionRecord.GetSessionState(), message.GetMessageVersion(), parameters.Create());
sessionRecord.GetSessionState().SetLocalRegistrationId(identityKeyStore.GetLocalRegistrationId());
sessionRecord.GetSessionState().SetRemoteRegistrationId(message.GetRegistrationId());
sessionRecord.GetSessionState().SetAliceBaseKey(message.GetBaseKey().Serialize());
if (message.GetPreKeyId().ForceGetValue() != Medium.MAX_VALUE)
{
return(message.GetPreKeyId());
}
else
{
return(May <uint> .NoValue); // May.absent();
}
}