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openluopworld avatar openluopworld commented on August 16, 2024

和之前的逻辑类似，例如第一个原始，同样将[0e 0b 0d 09]的乘法按照比特拆分。您可以推导下。

至于为什么要这样做，主要是转化为简单的2倍乘和异或运算，2倍乘可以进一步转化为简单的左移位和异或运算。

from aes_128.

rpodman avatar rpodman commented on August 16, 2024

和之前的逻辑类似，例如第一个原始，同样将[0e 0b 0d 09]的乘法按照比特拆分。您可以推导下。

至于为什么要这样做，主要是转化为简单的2倍乘和异或运算，2倍乘可以进一步转化为简单的左移位和异或运算。

好的, 感谢您, 差不多明白了

from aes_128.

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