java编写MD5加密生成例子，对于需要加入密码验证的程序绝对实用，可以进行直接拷贝使用。-prepared MD5 encryption generated example, the need for password verification procedures for the practical, direct copy.

通过java对文件进行加密解密，并可以对文件进行复制，包含两种方式：字符、字节。-Java files through encryption and decryption, and can copy files, including in two ways: characters, bytes.

Des algorithm in java