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IADIS
2004
13 years 6 months ago
Preliminary Steps in Designing and Implementing a Privilege Verifier for PMI
We have designed and deployed a system that uses X.509 public-key certificates (PKC) and attribute certificates (AC) for access control. This includes an authorization service for...
Diana Berbecaru, Antonio Lioy
PKC
2012
Springer
235views Cryptology» more  PKC 2012»
11 years 7 months ago
Improved Security for Linearly Homomorphic Signatures: A Generic Framework
ded abstract of this work will appear in Public Key Cryptography — PKC 2012. This is the full version. We propose a general framework that converts (ordinary) signature schemes ...
David Mandell Freeman
PKC
2004
Springer
106views Cryptology» more  PKC 2004»
13 years 10 months ago
On the Security of Multiple Encryption or CCA-security+CCA-security=CCA-security?
In a practical system, a message is often encrypted more than once by different encryptions, here called multiple encryption, to enhance its security. Additionally, new features ...
Rui Zhang 0002, Goichiro Hanaoka, Junji Shikata, H...