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user 2506
AES (Advanced Encryption Standard) is a symmetrical block-cipher algorithm with a 128-bit block size, and key sizes of 128, 192 or 256 bits.
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S-box design criteria and random sboxes
In AES, the s-boxes had to obey certain mathematical rules, which? And why?
What security does using hidden s-boxes (GOST) or generating them from the key (Khufu) add? …
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