private CircuitNode processCreatedFastCell(Router targetRouter, Cell cell, TorKeyAgreement kex) {
final byte[] payload = new byte[TorMessageDigest.TOR_DIGEST_SIZE * 2];
final byte[] keyMaterial = new byte[CircuitNodeCryptoState.KEY_MATERIAL_SIZE];
final byte[] verifyHash = new byte[TorMessageDigest.TOR_DIGEST_SIZE];
cell.getByteArray(payload);
if (!kex.deriveKeysFromHandshakeResponse(payload, keyMaterial, verifyHash)) {
// XXX
return null;
}
final CircuitNode node = CircuitNodeImpl.createFirstHop(targetRouter, keyMaterial, verifyHash);
circuit.appendNode(node);
return node;
}
