[21487] in cryptography@c2.net mail archive
Re: passphrases with more than 160 bits of entropy
daemon@ATHENA.MIT.EDU (Joseph Ashwood)
Wed Mar 22 08:37:27 2006
X-Original-To: cryptography@metzdowd.com
X-Original-To: cryptography@metzdowd.com
From: "Joseph Ashwood" <ashwood@msn.com>
To: "Travis H." <solinym@gmail.com>, <cryptography@metzdowd.com>
Date: Tue, 21 Mar 2006 20:25:27 -0800
----- Original Message -----
From: "Travis H." <solinym@gmail.com>
Subject: passphrases with more than 160 bits of entropy
> I was thinking that one could hash the first block, copy the
> intermediate state, finalize it, then continue the intermediate result
> with the next block, and finalize that. Is this safe? Is there a
> better alternative?
Use a bigger hash, SHA-512 should be good to basically 512-bits, same for
Whirlpool. If those aren't enough for you, use the chaining mode from
Whirlpool and Rijndael with appropriate size.
Joe
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