Titlebook: Applied Cryptography and Network Security; 6th International Co Steven M. Bellovin,Rosario Gennaro,Moti Yung Conference proceedings 2008 Sp

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Improved Conditional E-Payments,me of a certain condition not known in advance. In this framework, a payer obtains an electronic coin and can transfer it to a payee under a certain condition. Once the outcome of the condition is known, if it was favorable to the payee, the payee can deposit the coin; otherwise, the payer keeps the

訓誡

Anonymity in Transferable E-cash,e two natural additional levels of anonymity directly related to transferability and not reached by existing schemes that we call . and .. We show that the FA property can be reached by providing a generic construction and that the PA’s cannot. Next, we define two restricted perfect anonymity proper

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Sanitizable Signatures and Their Application to Content Protection,sage without any interaction with the original signer. In this paper, we extend these sanitizable signatures to formally introduce .. In this concept, the power of sanitization is given to possibly several entities, for a given message/signature by using a trapdoor computed by the signer at any time

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Multi-factor Authenticated Key Exchange,duce a security model for multi-factor authenticated key exchange, which combines a password, a secure device, and biometric authentications. We thereafter present a scheme, that can be proven secure, in the random-oracle model.

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Repelling Detour Attack Against Onions with Re-encryption,odes so that each node knows only its predecessor and its successor on the routing path. Moreover, encoding details enable universal re-encryption: each node re-encrypts the message so that no observer can link together the ciphertexts before and after re-encryption and re-encryption can be performe

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Analysis of EAP-GPSK Authentication Protocol,to develop authentication methods for the EAP framework. We analyze the protocol and find three weaknesses: a repairable Denial-of-Service attack, an anomaly with the key derivation function used to create a short-term master session key, and a ciphersuite downgrading attack. We propose fixes to the

circumvent