hi,
--- "Major Variola (ret)"
Because there are no collision *free* hash functions, there will always be several domain elements that map to the same range element. Assuming more domain elements than range elements, which is generally what people mean by hashing.
yes-thats clear.
You're probably looking for functions that make it hard to intentionally find arguments that produce hashes identical to a given one.
Say I hash 2^80 messages using SHA-1. I want to be sure that no 2 messages will hash to the same MD or has a very low probability of hashing to the same MD.I was looking on how to build such compression functions.
You'll first have to use language more precisely to get any use out of it.
Yes-I will be careful. Regards Sarath. __________________________________ Do you Yahoo!? SBC Yahoo! DSL - Now only $29.95 per month! http://sbc.yahoo.com