1422 search results - page 189 / 285 » Information security and risk management |
CCS
2003
ACM
14 years 3 months ago
2003
ACM
We present a novel solution for authenticating printed paper documents by utilizing the inherent non–repeatable randomness existing in the printing process. For a document print...
CCS
2007
ACM
14 years 2 months ago
2007
ACM
Administrative RBAC (ARBAC) policies specify how Role-Based Access Control (RBAC) policies may be changed by each administrator. It is often difficult to fully understand the effe...
CCS
2010
ACM
14 years 1 months ago
2010
ACM
In this paper, we propose a new form of image-based CAPTCHA we term "scene tagging". It tests the ability to recognize a relationship between multiple objects in an imag...
CCS
2008
ACM
14 years 2 days ago
2008
ACM
Pervasive computing environments have created a requirement for spatial- and temporal-aware access control systems. Although temporal, spatial and spatio-temporal role-based acces...
KDD
2005
ACM
14 years 10 months ago
2005
ACM
We address privacy-preserving classification problem in a distributed system. Randomization has been the approach proposed to preserve privacy in such scenario. However, this appr...