DES算法把64位的明文输入块变为64位的密文输出块，它所使用的密钥也是64位，首先，DES把输入的64位数据块按位重新组合，并把输出分为L0、 R0两部分，每部分各长32位，并进行前后置换（输入的第58位换到第一位，第50位换到第2位，依此类推，最后一位是原来的第7位），最终由L0输出左 32位，R0输出右32位，根据这个法则经过16次迭代运算后，得到L16、R16，将此作为输入，进行与初始置换相反的逆置换，即得到密文输出。-DES algorithm combines the 64 expr

In cryptography, a substitution cipher is a method of encryption by which units of plaintext are replaced with ciphertext according to a regular system the "units" may be single letters (the most common), pairs of letters, triplets of letters, mixtur

解密/加密 BIn軟件 ~MzCrypt-Descr iption This is a commandline application that converts back and forth between .bin and .zip. Usage - Decrypt .bin: mzcrypt.exe-d-o update-decrypted.zip update.bin (converts .bin to .zip) - Encryp