public Session(int clientOS, int clientRevision)
{
/* Initialize protocol with this session. */
this._protocol = new Protocol(this);
/* Set client properties. */
this._clientId = CLIENT_ID;
this._clientOs = clientOS;
this._clientRevision = clientRevision;
/* Client and server generate 16 random bytes each. */
this._clientRandom = new byte[16];
this._serverRandom = new byte[16];
RandomBytes.GetRandomBytes(ref this._clientRandom);
/* Allocate buffer for server RSA key. */
this._serverBlob = new byte[256];
/* Allocate buffer for salt and auth hash. */
this._username = null;
this._password = null;
this._salt = new byte[10];
this._authHash = new byte[20];
/*
* Create a private and public DH key and allocate buffer
* for shared key. This, along with key signing, is used
* to securely agree on a session key for the Shannon stream
* cipher.
*/
this._dhClientKeyPair = DH.GenerateKeyPair(768);
this._dhSharedKey = new byte[96];
/* Generate RSA key pair. */
this._rsaClientKeyPair = Sharpotify.Crypto.RSA.GenerateKeyPair(1024);
/* Allocate buffers for HMAC and Shannon stream cipher keys. */
this._keyHmac = new byte[20];
this._authHmac = new byte[20];
this._keyRecv = new byte[32];
this._keySend = new byte[32];
this._keyRecvIv = 0;
this._keySendIv = 0;
/* Stream cipher instances. */
this._shannonRecv = new Shannon();
this._shannonSend = new Shannon();
/* Allocate buffer for puzzle solution. */
this._puzzleDenominator = 0;
this._puzzleMagic = 0;
this._puzzleSolution = new byte[8];
/* Found in Storage.dat (cache) at offset 16. Modify first byte of cache hash. */
this._cacheHash = new byte[] {
(byte)0xf4, (byte)0xc2, (byte)0xaa, (byte)0x05,
(byte)0xe8, (byte)0x25, (byte)0xa7, (byte)0xb5,
(byte)0xe4, (byte)0xe6, (byte)0x59, (byte)0x0f,
(byte)0x3d, (byte)0xd0, (byte)0xbe, (byte)0x0a,
(byte)0xef, (byte)0x20, (byte)0x51, (byte)0x95
};
this._cacheHash[0] = (byte)new Random().Next();
/* Not initialized. */
this._initialClientPacket = null;
this._initialServerPacket = null;
}