this.sealClientHandle = Crypto.getArcfour(this.sealClientKey);
        if (log.isDebugEnabled()) {
            log.debug("Seal key is " + Hexdump.toHexString(this.sealClientKey));
        }

        this.sealServerKey = deriveKey(mk, S2C_SEAL_CONSTANT);
        this.sealServerHandle = Crypto.getArcfour(this.sealServerKey);

        if (log.isDebugEnabled()) {

                    tc.getConfig().getRandom().nextBytes(this.masterKey);

                    final byte[] exchangedKey = new byte[16];
                    final Cipher arcfour = Crypto.getArcfour(ntlm2SessionKey);
                    arcfour.update(this.masterKey, 0, 16, exchangedKey, 0);
                    setEncryptedSessionKey(exchangedKey);
                } else {