in reply to
Re: On showing the weakness in the MD5 digest function and getting bitten by scalar context
in thread On showing the weakness in the MD5 digest function and getting bitten by scalar context
While it might be amusing to watch people run around in panic over this, I wish they'd stop. They've been told for years that they should avoid MD5; I'm just surprised this discovery wasn't made sooner.
Also, I'm not sure on this point, but I don't think SHA-512 adds any security over SHA-1. It increases the size of the bitstream, which is useful for some applications, but finding collisions would take the same amount of time.
Not sure I follow you here. If the best possible collision-finding attack is brute force, shouldn't a longer output translate directly to more work? Are you suggesting that there is a better-than-brute-force attack against SHA-512? I'd have to say that it seems likely that one will be discovered someday. This MD5 discovery shows how much we still have to learn about constructing hash functions.