The implement of two algorithm,Data Encryption Standard(DES) and Advanced Encryption Standard(AES) were discussed. Compared with DES,AES has more superiority in efficiency and security.

• 运用C和C++对数据加密标准(Data Encryption Standard,DES)和高级加密标准(Advanced Encryption Stan-dard,AES)进行了实现,并就两者的效率和安全性进行了比较,证明了AES算法的优越性。