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CCS
2010
ACM
15 years 4 months ago
Synchronized aggregate signatures: new definitions, constructions and applications
An aggregate signature scheme is a digital signature scheme where anyone given n signatures on n messages from n users can aggregate all these signatures into a single short signa...
Jae Hyun Ahn, Matthew Green, Susan Hohenberger
CCS
2010
ACM
15 years 4 months ago
Attacks and design of image recognition CAPTCHAs
We systematically study the design of image recognition CAPTCHAs (IRCs) in this paper. We first review and examine all IRCs schemes known to us and evaluate each scheme against th...
Bin B. Zhu, Jeff Yan, Qiujie Li, Chao Yang, Jia Li...
AINA
2007
IEEE
15 years 10 months ago
Using Social Network Theory Towards Development of Wireless Ad Hoc Network Trust
The evolution and existence of stable trust relations have been studied extensively in the context of social theory. However, reputation systems or trust schemes have only been re...
Sameer Pai, Tanya Roosta, Stephen B. Wicker, Shank...
FC
1997
Springer
107views Cryptology» more  FC 1997»
15 years 7 months ago
An Efficient Micropayment System Based on Probabilistic Polling
Existing software proposals for electronic payments can be divided into "on-line" schemes that require participation of a trusted party (the bank) in every transaction an...
Stanislaw Jarecki, Andrew M. Odlyzko
156
Voted
IJISEC
2010
159views more  IJISEC 2010»
15 years 1 months ago
A generalization of Paillier's public-key system with applications to electronic voting
We propose a generalization of Paillier's probabilistic public key system, in which the expansion factor is reduced and which allows to adjust the block length of the scheme e...
Ivan Damgård, Mads Jurik, Jesper Buus Nielse...