The programmable logical component's FPGA and CPLD substitute ASICand DSP increasingly and are being used to realize the digital signal processing algorithm.
可编程逻辑器件FPGA和CPLD正越来越多地替代ASIC和DSP器件，被用于实现数字信号处理算法。
This paper shows that Hi-times substitute makes permutation structure more complicity, so symmetrical permutation can be chosen as the diffusion module in block cipher algorithm design.
指出了分组密码的多次迭代使对称置换结构复杂化，可以选择对称置换作为分组密码算法的扩散部分来设计。
Messages and goals of each security protocol are formalized with different set of expression, then most general substitute of the set of expression can be solved by an algorithm.
把每个安全协议的消息和目标分别形式化为表达式集，通过一个算法分别求各表达式集合的最一般代换。
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