Titlebook: Applied Cryptography and Network Security; 7th International Co Michel Abdalla,David Pointcheval,Damien Vergnaud Conference proceedings 200

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Efficient Deniable Authentication for Signaturesng it possible for any malicious verifier to transfer the proof to anyone else. It is for instance the case for e-passports where the signature from the national authority authenticates personal data. To solve this problem, we can prove knowledge of a valid signature without revealing it. This proof

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Algorithmic Tamper Proof (ATP) Counter Units for Authentication Devices Using PINes, and proposed counter units which count the number of wrong attempts in user authentication; however, as for the counter unit, they only constructed one which counts the . number of wrong attempts. Although large number for the limit of wrong attempts is required for usability, it allows an attac

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