[17463] in cryptography@c2.net mail archive
expanding a password into many keys
daemon@ATHENA.MIT.EDU (Ian G)
Mon Jun 13 14:59:31 2005
X-Original-To: cryptography@metzdowd.com
X-Original-To: cryptography@metzdowd.com
From: Ian G <iang@systemics.com>
To: cryptography@metzdowd.com
Date: Sun, 12 Jun 2005 16:27:36 +0100
I'd like to take a password and expand it into
several keys. It seems like a fairly simple operation
of hashing the concatonatonation of the password
with each key name in turn to get each key.
Are there any 'gotchas' with that?
iang
PS: some psuedo code if the above is not clear.
for k in {set of keys needed}
do
key[k] = sha1( pass | k );
done
--
Advances in Financial Cryptography, Issue 1:
https://www.financialcryptography.com/mt/archives/000458.html
Daniel Nagy, On Secure Knowledge-Based Authentication
Adam Shostack, Avoiding Liability: An Alternative Route to More Secure Products
Ian Grigg, Pareto-Secure
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