实现十进制负数求二进制的补码，方便广大学者实现视频或图像加解密过程中用到异或加密-Seeking to achieve a negative decimal binary complement, facilitate the realization of the majority of scholars, video or images used in encryption and decryption process XOR encryption

base64随机字符混淆加密、解密-美拍视频地址解密,反推加密算法(Base64 random character confusion encryption and decryption - Beauty video address decryption, reverse encryption algorithm)