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Apr
22
comment Benchmarks for second round CAESAR competitors
@SamuelNeves Hmm alright it will be interesting, how do you expect will norx, keyak and chacha12/20-poly1305 stack up?
Apr
21
comment Why can't NORX produce intermediate auth tags like Keyak can?
How does Keyak's performance compare to chacha20-poly1305 in software on a Haswell chip (or something comparable)?
Aug
6
comment Is the encryption of a hash a good MAC?
@poncho Hm, you are completely right, I was too focused on another specific case where it wouldn't work.
Jul
6
comment Using a Hash as a secure PRNG
So generally, the NIST wasn't quite sure, but they felt like doing some random stuff would make it more.. random? ;)
Jul
6
comment Using a Hash as a secure PRNG
Yeah but that makes like 2 additional lines, still nowhere near the NIST algorithm
Jul
6
comment Using a Hash as a secure PRNG
As for the flaw in idea 2: That is correct, thanks for pointing that out. As for addition of entropy, what about hash(state || new_seed)? The fixed-length output can also easily be fixed, that's not really a concern I'm afraid.