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9 votes
3 answers
4k views

Can one use a reversible hash algorithm as a compression function?

As we know any input to SHA-256 will be returned as 64 hex length output. Is it possible to create a hash that can do the same thing as SHA-256 but can be reversed, so if we have the output of 64 ...
Вања Хочак's user avatar
1 vote
1 answer
1k views

SHACAL-2 vs. AES as underlying block cipher for Secure Hash (aka SHA-256)

The hashing scheme SHA-256 (for instance) is based on Merkle-Damgård construction with the underlying compression function based on the block cipher SHACAL-2 configured in Davies Meyer mode. SHACAL-2 ...
Evgeni Vaknin's user avatar