55 search results - page 3 / 11 » On the Minimal Assumptions of Group Signature Schemes |
IJNSEC
2011
13 years 28 days ago
2011
In this paper, we reinvestigate the security analysis of blind signature scheme over braid groups proposed by Verma in 2008. A blind signature scheme is a cryptographic primitive ...
EUROCRYPT
2006
Springer
13 years 9 months ago
2006
Springer
We present the first efficient group signature scheme that is provably secure without random oracles. We achieve this result by combining provably secure hierarchical signatures i...
IIWAS
2004
13 years 7 months ago
2004
Group signature schemes permit a group member signing on messages anonymously and unlinkably on behalf of a group. The anonymity can be revoked when arguments occurred. This paper...
INDOCRYPT
2005
Springer
13 years 11 months ago
2005
Springer
Abstract. We introduce a new undeniable signature scheme which is existentially unforgeable and anonymous under chosen message attacks in the standard model. The scheme is an embed...
ICCSA
2005
Springer
13 years 11 months ago
2005
Springer
In resent years, Popescu proposed several group signature schemes based on the Okamoto-Shiraishi assumption in [8–11], and claimed his schemes are secure. However, this paper dem...