Re: Dynamic password authentication scheme

[Sasha <spamit () mail com>]

You maybe interested in the following paper:
http://www-2.cs.cmu.edu/~hopper/secure_human_identification_protocols.pdf

Secure Human Identification Protocols
Nicholas J. Hopper and Manuel Blum

One interesting and important challenge for the cryptologic community is
that of providing secure authentication and identification for unassisted
humans. There are a range of protocols for secure identification which
require various forms of trusted hardware or software, aimed at protecting
privacy and financial assets. But how do we verify our identity, securely,
when we dont have or dont trust our smart card, palmtop, or laptop? In
this paper, we provide definitions of what we believe to be reasonable
goals for secure human identification. We demonstrate that existing
solutions do not meet these reasonable definitions. Finally, we provide
solutions which demonstrate the feasibility of the security conditions
attached to our definitions, but which are impractical for use by humans.

Regards,
ASK

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