1342 - 2812 Key - Substitution Attacks on
نویسندگان
چکیده
Group signatures were introduced by Chaum and Van Heyst [12], and many security requirements for group signatures have been proposed. Bellare, Micciancio, and Warinschi [4] showed that satisfying full-anonymity and full-traceability is sufficient, in the sence that all the above-mentioned requirements are implied by them. Wilson and Menezes [5] introduced a considerable attack against standard signatures, key substitution attack. In this paper, we propose security conditions of group signatures against this attack and show that the security requirements are not sufficient regarding the attack. We also propose a group signature scheme that is secure against the key substitution attack, fully-anonymous, and fully-traceable.
منابع مشابه
1342 - 2812 A new lattice construction for partial key exposure attack for RSA ( revised ) Yoshinori Aono
In this paper we present a new lattice construction for a lattice based partial key exposure attack for the RSA cryptography. We consider the situation that the RSA secret key d is small and a sufficient amount of the LSBs (least significant bits) of d are known by the attacker. We show that our lattice construction is theoretically more efficient than known attacks proposed in [2, 7]. This is ...
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