Method longToBytes

src/main/java/utils/tool.java:15–22

(long num)

    }

    public static byte[] longToBytes(long num) {
        byte[] byteNum = new byte[8];
        for (int ix = 0; ix < 8; ++ix) {
            int offset = 64 - (ix + 1) * 8;
            byteNum[ix] = (byte) ((num >> offset) & 0xff);
        }
        return byteNum;
    }

    public static boolean Xor_Empty(byte[] xor) {
        for (int i = 0; i < xor.length; i++) {