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IEICE TRANSACTIONS on Fundamentals

Evaluating Security of a Simple Interactive Human Identification Scheme

Ryo MIZUTANI, Tsutomu MATSUMOTO

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Summary :

Password checking schemes are human identification methods commonly adopted in many information systems. One of their disadvantages is that an attacker who correctly observed an input password can impersonate the corresponding user freely. To overcome it there have been proposed interactive human identification schemes. Namely, a human prover who has a secret key is asked a question by a machine verifier, who then checks if an answer from the prover matches the question with respect to the key. This letter examines such a scheme that requires relatively less efforts to human provers. By computer experiments this letter evaluates its resistance against a type of attack; after observing several pairs of questions and correct answers how successfully can an attacker answer the next question?

Publication
IEICE TRANSACTIONS on Fundamentals Vol.E78-A No.5 pp.577-578
Publication Date
1995/05/25
Publicized
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DOI
Type of Manuscript
Special Section LETTER (Special Section of Letters Selected from the 1994 IEICE Fall Conference)
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