[Haskell-cafe] Digests

[Serguey Zefirov]

2010/12/3 Permjacov Evgeniy <permeakra at gmail.com>:
>> Most of the time you can get away with usual block ciphers (and even
>> with weaker parameters). There is a scheme that transforms block
>> cipher into hash function:
>> http://en.wikipedia.org/wiki/CRHF#Hash_functions_based_on_block_ciphers
> */me wrote it into to_read list. The problem is, however, that block
> ciphers are quite unfriendly to plain word8 streams. It is not a deadly
> problem, but i'd like to avoid block collections.

All one-way hashes do block collections. This is unavoidable.