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CCS
2004
ACM
14 years 4 months ago
Concealing complex policies with hidden credentials
Hidden credentials are useful in protecting sensitive resource requests, resources, policies, and credentials. We propose a significant performance improvement when implementing ...
Robert W. Bradshaw, Jason E. Holt, Kent E. Seamons
WPES
2004
ACM
14 years 4 months ago
Hidden access control policies with hidden credentials
In an open environment such as the Internet, the decision to collaborate with a stranger (e.g., by granting access to a resource) is often based on the characteristics (rather tha...
Keith B. Frikken, Mikhail J. Atallah, Jiangtao Li
CCS
2005
ACM
14 years 5 months ago
Automated trust negotiation using cryptographic credentials
In automated trust negotiation (ATN), two parties exchange digitally signed credentials that contain attribute information to establish trust and make access control decisions. Be...
Jiangtao Li, Ninghui Li, William H. Winsborough
IAT
2006
IEEE
14 years 5 months ago
Trust Negotiations with Customizable Anonymity
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...
Anna Cinzia Squicciarini, Abhilasha Bhargav-Spantz...
ISPEC
2007
Springer
14 years 5 months ago
Privacy-Preserving Credentials Upon Trusted Computing Augmented Servers
Credentials are an indispensable means for service access control in electronic commerce. However, regular credentials such as X.509 certificates and SPKI/SDSI certificates do no...
Yanjiang Yang, Robert H. Deng, Feng Bao
NDSS
2007
IEEE
14 years 5 months ago
Attribute-Based Publishing with Hidden Credentials and Hidden Policies
With Hidden Credentials Alice can send policyencrypted data to Bob in such a way that he can decrypt the data only with the right combination of credentials. Alice gains no knowle...
Apu Kapadia, Patrick P. Tsang, Sean W. Smith
CRYPTO
2009
Springer
109views Cryptology» more  CRYPTO 2009»
14 years 6 months ago
Randomizable Proofs and Delegatable Anonymous Credentials
We construct an efficient delegatable anonymous credentials system. Users can anonymously and unlinkably obtain credentials from any authority, delegate their credentials to other ...
Mira Belenkiy, Jan Camenisch, Melissa Chase, Marku...