Hot answers tagged


I think the attack by Preneel and van Oorschot (MDx-MAC and Building Fast MACs from Hash Functions, CRYPTO'95) in Proposition 4 applies. It was cited by PulpSpy in reply to my question about H(pass||length(data)||data). With fixed-length data, that amounts to a known suffix for the key. Proposition 4 states in a nutshell that for a generic construction ...

Only top voted, non community-wiki answers of a minimum length are eligible