233 search results - page 30 / 47 » CAPTCHA: Using Hard AI Problems for Security |
114
Voted
ACNS
2010
Springer
15 years 5 months ago
2010
Springer
Verifiably encrypted signature schemes (VES) allow a signer to encrypt his or her signature under the public key of a trusted third party, while maintaining public signature verifi...
114
click to vote
IPSN
2009
Springer
15 years 8 months ago
2009
Springer
We consider the problem of monitoring spatial phenomena, such as road speeds on a highway, using wireless sensors with limited battery life. A central question is to decide where ...
138
click to vote
JSAC
2008
15 years 1 months ago
2008
In this paper, we investigate the coverage problem in wireless sensor networks using a game theory method. We assume that nodes are randomly scattered in a sensor field and the goa...
132
Voted
CCS
2005
ACM
15 years 7 months ago
2005
ACM
In a reputation-based trust-management system, agents maintain information about the past behaviour of other agents. This information is used to guide future trust-based decisions...
113
Voted
KDD
2003
ACM
16 years 2 months ago
2003
ACM
High-dimensional collections of 0-1 data occur in many applications. The attributes in such data sets are typically considered to be unordered. However, in many cases there is a n...