Re: incremental MD5 ?
- From: daw@xxxxxxxxxxxxxxxxxxxxxxxx (David Wagner)
- Date: Sat, 18 Mar 2006 07:41:22 +0000 (UTC)
MD5 does not do encryption.
To permit incremental modifications to data, you might consider
a Merkle hash tree. That permits incremental block-replacement
with O(lg n) work.
My guess is that you probably want a MAC, not a hash. You can make
those incremental, too. Do a web search for incremental cryptography
and you should find a bunch of papers.
.
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