When overridden in a derived class, gets an instance of the specified keyed hash algorithm.

在派生类中重写时，获取指定的加密哈希算法的实例。

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This paper introduces the MD5 algorithm and security analysis. A new keyed hash algorithm based on MD5 is proposed.

介绍了MD 5算法及对它的安全性能分析，提出了一个基于MD5的键控散列算法。

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Combining the advantages of chaotic coupled system and conventional one-way hash algorithm, a new keyed one-way hash function was presented.

结合双混沌系统以及传统散列函数的优点，提出一种新的带密钥单向散列函数的构造方法。

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