On Mar 22, 2006, at 4:28 AM, Thierry Moreau wrote:
Travis H. wrote:
Hi,
Does anyone have a good idea on how to OWF passphrases without
reducing them to lower entropy counts? That is, I've seen systems
which hash the passphrase then use a PRF to expand the result --- I
don't want to do that. I want to have more than 160 bits of entropy
involved.
More than 160 bits is a wide-ranging requirement.
Entropy is a highly discussed unit of measure.
And very often confused. While you do want maximum entropy, maximum
entropy is not sufficient. The sequence of the consecutive numbers 0
- 255 have maximum entropy but have no randomness (although there is
finite probability that a RNG will produce the sequence).
Regards,
Aram Perez
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