Schneier: SHA-1 has been broken - Time for a second thought about SDLH ?

2005-03-20 Thread Ralf Senderek
Bruce Schneier wrote: (in Cryptogram) > SHA-1 has been broken. Not a reduced-round version. Not a simplified version. > The real thing. > > "One-way hash functions are supposed to have two properties. One, they're one > way. This means that it is easy to take a message and compute the hash val

Re: Schneier: SHA-1 has been broken - Time for a second thought about SDLH ?

2005-03-20 Thread Steven M. Bellovin
In message <[EMAIL PROTECTED]>, Ralf Senderek w rites: > >And that is why I ask to give the Shamir Discrete Logarithm Hash Funktion a se >cond >thought. At leeast we have a proof of collision resistance under the assumptio >n >that factoring is infeasible for the modulus used. > >And that it more