New answers tagged feistel-network
In a Feistel network you can use ANY function and it will be invertible. Of course, in order to get security you need the function to fulfill some property. One of the main reasons to use a Feistel network is to get a pseudorandom permutation. For this to work, you need 3 or 4 rounds of Feistel with a pseudorandom function (with tweaks or independent keys at ...
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