233 search results - page 27 / 47 » CAPTCHA: Using Hard AI Problems for Security |
OOPSLA
2005
Springer
15 years 3 months ago
2005
Springer
Architectural patterns are a key point in architectural documentation. Regrettably, there is poor support for modeling architectural patterns, because the pattern elements are not...
93
Voted
CCS
2004
ACM
15 years 3 months ago
2004
ACM
Comparing the expressive power of access control models is recognized as a fundamental problem in computer security. Such comparisons are generally based on simulations between di...
CSFW
2006
IEEE
15 years 3 months ago
2006
IEEE
Role-Based Access Control (RBAC) is a widely used model for expressing access control policies. In large organizations, the RBAC policy may be collectively managed by many adminis...
67
Voted
ASIACRYPT
2003
Springer
15 years 2 months ago
2003
Springer
We introduce a new cryptographic tool: multiset hash functions. Unlike standard hash functions which take strings as input, multiset hash functions operate on multisets (or sets). ...
78
Voted
ASIACRYPT
2003
Springer
15 years 2 months ago
2003
Springer
This paper investigates some modular powering functions suitable for cryptography. It is well known that the Rabin encryption function is a 4-to-1 mapping and breaking its one-wayn...