233 search results - page 19 / 47 » CAPTCHA: Using Hard AI Problems for Security |
CORR
2006
Springer
14 years 9 months ago
2006
Springer
The paper analyzes CFVZ, a new public key cryptosystem whose security is based on a matrix version of the discrete logarithm problem over an elliptic curve. It is shown that the co...
CCR
2006
14 years 9 months ago
2006
The rapid growth of the Internet over the last decade has been startling. However, efforts to track its growth have often fallen afoul of bad data -- for instance, how much traffi...
ASIACRYPT
2009
Springer
15 years 4 months ago
2009
Springer
We demonstrate how the framework that is used for creating efficient number-theoretic ID and signature schemes can be transferred into the setting of lattices. This results in cons...
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CCS
2005
ACM
15 years 3 months ago
2005
ACM
In automated trust negotiation (ATN), two parties exchange digitally signed credentials that contain attribute information to establish trust and make access control decisions. Be...
163
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ICDE
2007
IEEE
15 years 11 months ago
2007
IEEE
Networked information systems require strong security guarantees because of the new threats that they face. Various forms of encryption have been proposed to deal with this proble...