27 search results - page 1 / 6 » Limits to Anonymity When Using Credentials |
SPW
2004
Springer
13 years 10 months ago
2004
Springer
This paper identifies certain privacy threats that apply to anonymous credential systems. The focus is on timing attacks that apply even if the system is cryptographically secure....
ICICS
2009
Springer
13 years 11 months ago
2009
Springer
This work explores the problem of using biometric data to achieve non-transferability of anonymous credentials; that is, sharing of anonymous credentials, which allow one to anonym...
PKC
2009
Springer
14 years 5 months ago
2009
Springer
In this work, we consider the task of allowing a content provider to enforce complex access control policies on oblivious protocols conducted with anonymous users. As our primary ...
IAT
2006
IEEE
13 years 10 months ago
2006
IEEE
Trust negotiation makes it possible for two parties to carry on secure transactions by first establishing trust through a bilateral, iterative process of requesting and disclosin...
WPES
2003
ACM
13 years 10 months ago
2003
ACM
We present a model and protocol for anonymous credentials. Rather than using deterrents to ensure non-transferability, our model uses secure hardware with biometric authentication...