In this demonstration, I use the TripleDES blockencryption algorithm of the SunJCE cryptography provider.
在这个演示中，我使用了SunJCE密码术供应商的tripledes块加密算法。
2
As the representative of tradition blockencryption algorithm, DES has a deadly weakness that is too small key space to prevent exhaust attacks.
DES作为传统分组密码算法的典型代表，存在密钥空间太小的致命弱点，在穷举密钥攻击下被破译。
3
An application example is given. Finally the security performance and anti-attack performance from both traditional blockencryption algorithm and improved algorithm are analyzed and compared.