iteration

iteration of first substep, be sure to perform element shape checking.

是否过改变单元划分来解决。加大单元尺寸？

This novel method is more effective than the traditional diagrammatize method or analytic method, those traditional methods are needed to do complicated digital iteration or check the diagram.

该方法解决了目前图解法尚未解决和解析法要进繁琐的数值迭或查图表的问题。

DES algorithm decryption process is the same, the only difference is that the first iteration used Subkey K15, K14 ,......, second last with K0, the algorithm itself without any change.

DES算法的解密过程是一样的，区别仅仅在于第一次迭时用子密钥K15，第二次K14、......，最后一次用K0，算法本身并没有任何变化。