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What is the need of substitution and permutation networks in AES?
I have tried to answer this question for quite some time now. But a complete intuitive understanding still eludes me.
Consider an alternate construction for a block cipher without any substitution and ...
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Can we design a block cipher based on SP-network without loss of E/D similarity theoretically?
I understand what SP-network (Substitution-Permutation Network) and Feistel Network look like. And those ciphers based on Feistel (e.g. DES) often achieve so called E/D similarity, which indicates ...
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