233 search results - page 20 / 47 » CAPTCHA: Using Hard AI Problems for Security |
SPAA
2010
ACM
15 years 2 months ago
2010
ACM
This paper studies non-cryptographic authenticated broadcast in radio networks subject to malicious failures. We introduce two protocols that address this problem. The first, Nei...
KCAP
2003
ACM
15 years 2 months ago
2003
ACM
Acquiring knowledge has long been the major bottleneck preventing the rapid spread of AI systems. Manual approaches are slow and costly. Machine-learning approaches have limitatio...
CCS
2004
ACM
15 years 3 months ago
2004
ACM
We examine the problem of providing useful feedback about access control decisions to users while controlling the disclosure of the system’s security policies. Relevant feedback...
EUROCRYPT
2012
Springer
13 years 1 days ago
2012
Springer
Decoding random linear codes is a well studied problem with many applications in complexity theory and cryptography. The security of almost all coding and LPN/LWE-based schemes rel...
LATINCRYPT
2010
14 years 8 months ago
2010
In this article, we propose a new lattice-based threshold ring signature scheme, modifying Aguilar’s code-based solution to use the short integer solution (SIS) problem as securi...