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IJISEC
2007
14 years 11 months ago
2007
Abstract. We examine the popular proof models for group key establishment of Bresson et al. [BCPQ01,BCP01] and point out missing security properties addressing malicious protocol p...
SACRYPT
1998
Springer
15 years 3 months ago
1998
Springer
In this paper, we present a simple method for generating random-based signatures when random number generators are either unavailable or of suspected quality (malicious or accident...
EUROCRYPT
2007
Springer
15 years 5 months ago
2007
Springer
We study conditional computational entropy: the amount of randomness a distribution appears to have to a computationally bounded observer who is given some correlated information....
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CTRSA
2005
Springer
15 years 5 months ago
2005
Springer
Undeniable signatures were introduced in 1989 by Chaum and van Antwerpen to limit the self-authenticating property of digital signatures. An extended concept – the convertible un...
PKC
2004
Springer
15 years 5 months ago
2004
Springer
Abstract. In this paper, we examine issues related to the construction of identity-based threshold decryption schemes and argue that it is important in practice to design an identi...