134 search results - page 4 / 27 » On the security of a convertible group signature scheme |
IJNSEC
2006
13 years 7 months ago
2006
In 2004, Sekhar proposed a new signature scheme with message recovery. Based on this signature scheme with message recovery, they also proposed a designated verifier signature sch...
ASIACRYPT
2006
Springer
13 years 11 months ago
2006
Springer
The group signature scheme [1], ACJT for short, is popular. In this paper we show that it is not secure. It does not satisfy exculpability. The group manager can sign on behalf of ...
CRYPTO
2000
Springer
14 years 6 days ago
2000
Springer
A group signature scheme allows a group member to sign messages anonymously on behalf of the group. However, in the case of a dispute, the identity of a signature’s originator ca...
PKC
2012
Springer
11 years 10 months ago
2012
Springer
ded abstract of this work will appear in Public Key Cryptography — PKC 2012. This is the full version. We propose a general framework that converts (ordinary) signature schemes ...
IJNSEC
2011
13 years 2 months ago
2011
Since Al-Riyami and Paterson presented certificateless cryptography, many certificateless schemes have been proposed for different purposes. In this paper, we present a certificate...