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IACR
2011
104views more  IACR 2011»
12 years 8 months ago
Short Transitive Signatures for Directed Trees
A transitive signature scheme allows to sign a graph in such a way that, given the signatures of edges (a, b) and (b, c), it is possible to compute the signature for the edge (or ...
Philippe Camacho, Alejandro Hevia
ASIACRYPT
2008
Springer
13 years 10 months ago
Ambiguous Optimistic Fair Exchange
Optimistic fair exchange (OFE) is a protocol for solving the problem of exchanging items or services in a fair manner between two parties, a signer and a verifier, with the help o...
Qiong Huang, Guomin Yang, Duncan S. Wong, Willy Su...
EUROCRYPT
1999
Springer
14 years 23 days ago
New Public Key Cryptosystems Based on the Dependent-RSA Problems
Since the Diffie-Hellman paper, asymmetric encryption has been a very important topic, and furthermore ever well studied. However, between the efficiency of RSA and the security of...
David Pointcheval
ASIACRYPT
2004
Springer
14 years 1 months ago
Colluding Attacks to a Payment Protocol and Two Signature Exchange Schemes
An untraceable fair network payment protocol is proposed by Wang in Asiacrypt’03, which employs the existent techniques of the offline untraceable cash and a new technique calle...
Feng Bao
ACNS
2009
Springer
147views Cryptology» more  ACNS 2009»
13 years 6 months ago
Construction of Threshold Public-Key Encryptions through Tag-Based Encryptions
In this paper, we propose a notion of threshold tag-based encryption schemes that simplifies the notion of threshold identity-based encryption schemes, and we show a conversion fro...
Seiko Arita, Koji Tsurudome