A New Internet-Draft is available from the on-line Internet-Drafts directories.
Title : Strengthening Digital Signatures via Randomized Hashing
Author(s) : S. Halevi, H. Krawczyk
Filename : draft-irtf-cfrg-rhash-00.txt
Pages : 14
Date : 2005-5-18
We propose to adopt randomized hashing as a mode of operation for
existing and future cryptographic hash functions. The idea is to
strengthen hash functions for use in the context of digital
signatures without requiring a change to the actual hashing and
signing algorithms or to their existing implementations.
We suggest that randomization can be achieved via the processing of
the input to the function, even if the hash function itself is not
randomized. Effective use of such mode of operation requires
changes to the standardization of the encoding and processing of
digital signatures (e.g., PKCS#1, FIPS186) but has no impact on
existing signature and hashing algorithms. We urge the standards
community to plan a transition towards these new mechanisms for
which we outline specific instantiations.
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