876 search results - page 88 / 176 » Limits on the Usefulness of Random Oracles |
114
Voted
PKC
2004
Springer
15 years 6 months ago
2004
Springer
In a practical system, a message is often encrypted more than once by different encryptions, here called multiple encryption, to enhance its security. Additionally, new features ...
120
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NDSS
2003
IEEE
15 years 6 months ago
2003
IEEE
We study proactive two-party signature schemes in the context of user authentication. A proactive two-party signature scheme (P2SS) allows two parties—the client and the serverâ...
110
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DRM
2003
Springer
15 years 6 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...
103
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CCS
2001
ACM
15 years 5 months ago
2001
ACM
A group signature scheme allows a group member to sign messages anonymously on behalf of the group, while in case of a dispute, a designated entity can reveal the identity of a si...
110
Voted
EUROCRYPT
2004
Springer
15 years 4 months ago
2004
Springer
We introduce Ad Hoc Anonymous Identification schemes, a new multi-user cryptographic primitive that allows participants from a user population to form ad hoc groups, and then prove...