"Retailers Experiment With Biometric Payment" article

[Eugen Leitl]

On Thu, Jun 09, 2005 at 12:02:20PM -0400, Adam Shostack wrote:

> Has anyone ever studied the reversability of these algorithms?  It
> seems to me that you could make some plausible guesses and generate
> fingerprints from certain representations.  I don't know how likely
> those guesses are to be right.

The fingerprint hash (fingerprint's fingerprint) has to be resistant 
to rotation/translation, area size and subpattern presence, and tolerate 
some skin lesion noise, so it's the very opposite of a cryptographic hash.

Probably quite easy to reverse.

-- 
Eugen* Leitl <a href="http://leitl.org">leitl</a>
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