DES安全编码组件
  支持 DES、DESede(TripleDES,就是3DES)、AES、Blowfish、RC2、RC4(ARCFOUR)
  DES           key size must be equal to 56
  DESede(TripleDES) key size must be equal to 112 or 168
  AES           key size must be equal to 128, 192 or 256,but 192 and 256 bits may not be available
  Blowfish     key size must be multiple of 8, and can only range from 32 to 448 (inclusive)
  RC2           key size must be between 40 and 1024 bits
  RC4(ARCFOUR) key size must be between 40 and 1024 bits
  具体内容 需要关注 JDK Document http://.../docs/technotes/guides/security/SunProviders.html

 

工程代码免积分下载

http://download.csdn.net/detail/acmjk/7310927