New answers tagged algorithm-design
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Length-preserving all-or-nothing transform
Use a block cipher in Cipher block chaining (CBC) mode with a public or all-0 key. Twice.
There need not be a change in CBC direction on the second round. Xor the last block into the first on the ...
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Accepted
DDT for boolean functions must contain only powers of two
It is perfectly possible for the Difference Distribution Table (DDT) to have entries that are not powers of $2.$ There is no "reasonable" criterion that would rule this out that I am aware ...
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What are recommended, general strategies to start block-cipher design and/or analysis?
This is a complementary answer to the others, focusing on theory as well:
Step 1
The Heys' "Tutorial on linear and differential cryptanalysis" available here which uses 4 rounds of an SPN ...
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