WAP中WTLS层数据完整性的实现

HASH Function Implementation of the Integrity of Data in WAP's WTLS

在 WAP的 WTL S层中 ,通过 HASH函数实现的消息验证码可以保证数据传输时的完整性 ,这样可以有效地防止数据在传输过程中被主动攻击者修改 ,也可以防止数据被重放攻击和拒绝服务攻击。叙述了 HMAC中 SHA- 1及 MD5算法的实现 ,重点分析了这 2种算法各自的优越性。

The integrity of data in WAP's WTLS 1ayer is implemented by MAC with HASH function. In this way the transmitting data to be inserted, modified and registered can be efficiently protected, and attacks or denial-of-service attack to be launched by active attacker can be avoided. This paper describes the implementation of SHA-1 and MD5 in HMAC, and analyzes the superiority of the two algorithms.