分组密码广泛应用于各类密码算法，如加密算法和消息认证码(MAC)。
Block ciphers can be used in many cryptographic primitives, such as encryption and message authentication code (MAC).
本文利用来自不同群的运算，构造一种能证明其安全性的杂凑算法，并应用已证明的结果构造安全的消息认证码。
The construction of a provable hash algorithm is developed based on the operations from various groups, also, a safety message authentication code is presented by the result.
在方案中仅仅使用了视觉密码和消息认证码两个密码组件，在不降低安全性的前提下，有效地避开了传统密码的缺点。
It avoided the disadvantages of traditional cryptography by adopting only two cryptography components: visual cryptography and MAC, and the safety has not been lowered down.
在方案中仅仅使用了视觉密码和消息认证码两个密码组件，在不降低安全性的前提下，有效地避开了传统密码的缺点。
It avoided the disadvantages of traditional cryptography by adopting only two cryptography components: visual cryptography and MAC, and the safety has not been lowered down.
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