250 search results - page 25 / 50 » Improving the Exact Security of Digital Signature Schemes |
INFORMATICALT
2007
14 years 9 months ago
2007
Recently, Chen, Chung, and Huang proposed a traceable proxy multisignature scheme based on the elliptic curve cryptosystem. However, this paper shows that the original signers can ...
101
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ASIACRYPT
2003
Springer
15 years 1 months ago
2003
Springer
Motivated by privacy issues associated with dissemination of signed digital certificates, we define a new type of signature scheme called a `Universal Designated-Verifier Signatur...
100
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NDSS
2003
IEEE
15 years 3 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...
CSIE
2009
IEEE
15 years 4 months ago
2009
IEEE
Customers are usually passive in an electronic commerce transaction. Based on a new two times concurrent signature, this article presents a fair electronic payment (E-payment) pro...
ASIACRYPT
2006
Springer
15 years 1 months ago
2006
Springer
Non-interactive zero-knowledge proofs play an essential role in many cryptographic protocols. We suggest several NIZK proof systems based on prime order groups with a bilinear map...