113 search results - page 18 / 23 » Provable Security of ID-Based Proxy Signature Schemes |
ASIACRYPT
2010
Springer
13 years 4 months ago
2010
Springer
Blind signatures (BS), introduced by Chaum, have become a cornerstone in privacy-oriented cryptography. Using hard lattice problems, such as the shortest vector problem, as the bas...
ICALP
2005
Springer
14 years 7 days ago
2005
Springer
We introduce the notion of hierarchical group signatures. This is a proper generalization of group signatures, which allows multiple group managers organized in a tree with the si...
CTRSA
2004
Springer
14 years 3 days ago
2004
Springer
Abstract. In this paper, we give a first example of identity based undeniable signature using pairings over elliptic curves. We extend to the identity based setting the security m...
ETRICS
2006
13 years 10 months ago
2006
Anonymity services in the EU may be forced by the new EU data retention directive to collect connection data and deanonymise some of their users in case of serious crimes. For this...
EUROCRYPT
2004
Springer
14 years 3 days ago
2004
Springer
Abstract. This work presents a new privacy primitive called “Traceable Signatures”, together with an efficient provably secure implementation. To this end, we develop the unde...