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DES算法是典型的对称加密算法,广泛应用于商业化领域中,如各种智能卡等。对称算法的实现基本上都是基于同步电路设计。本文采用基于四相捆绑数据协议的异步电路方法实现了DES算法。将DES算法的同步电路设计和异步设计放到非接触智能卡芯片中,通过对芯片进行测试,对两种设计结果进行了全面的比较,从而表明用异步电路实现的对称算法在功耗和运算速度方面具有显著的优势。
DES algorithm is a typical symmetric encryption algorithm, widely used in commercial areas, such as a variety of smart cards. Symmetric algorithm is basically based on the realization of synchronous circuit design. In this paper, based on the four-phase bundle data protocol asynchronous circuit method to achieve the DES algorithm. The synchronous circuit design and asynchronous design of DES algorithm are put into the contactless smart card chip. Through the test of the chip, a comprehensive comparison of the two design results is made, which shows that the symmetrical algorithm realized by the asynchronous circuit has better performance in terms of power consumption and computing speed Has a significant advantage.