}
        engineReset();
    }

    private HMACT64(HMACT64 hmac) throws CloneNotSupportedException {
        super("HMACT64");
        this.ipad = hmac.ipad;
        this.opad = hmac.opad;
        this.md5 = (MessageDigest) hmac.md5.clone();
    }

    public Object clone() {
        try {
            return new HMACT64(this);
        } catch (CloneNotSupportedException ex) {

        engineReset();
    }


    private HMACT64 ( HMACT64 hmac ) throws CloneNotSupportedException {
        super("HMACT64");
        this.ipad = hmac.ipad;
        this.opad = hmac.opad;
        this.md5 = (MessageDigest) hmac.md5.clone();
    }


    @Override
    public Object clone () {
        try {
            return new HMACT64(this);
        }
        catch ( CloneNotSupportedException ex ) {

            throw new CIFSUnsupportedCryptoException(e);
        }
    }


    /**
     * 
     * @param key
     * @return HMACT64 MAC
     */
    public static MessageDigest getHMACT64 ( byte[] key ) {
        return new HMACT64(key);
    }


    /**
     * 
     * @param key
     * @return RC4 cipher
     */
    public static Cipher getArcfour ( byte[] key ) {