79 search results - page 10 / 16 » Fair Blind Signatures without Random Oracles |
CRYPTO
2005
Springer
14 years 3 months ago
2005
Springer
We investigate several previously suggested scenarios of instantiating random oracles (ROs) with “realizable” primitives in cryptographic schemes. As candidates for such “in...
CISC
2008
Springer
13 years 11 months ago
2008
Springer
One of the important applications of digital signature is anonymous credential or pseudonym system. In these scenarios, it is essential that the identity of the signer is kept secr...
PKC
2007
Springer
14 years 3 months ago
2007
Springer
: This paper addresses the security of optimistic fair exchange in a multi-user setting. While the security of public key encryption and public key signature schemes in a single-us...
DRM
2003
Springer
14 years 3 months ago
2003
Springer
In PODC 2003, Park, Chong, Siegel and Ray [22] proposed an optimistic protocol for fair exchange, based on RSA signatures. We show that their protocol is totally breakable already...
ASIACRYPT
2006
Springer
14 years 1 months ago
2006
Springer
In this paper, we propose a new approach for constructing selectively convertible undeniable signature schemes, and present two efficient schemes based on RSA. Our approach allows ...