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» A New Public-Key Cryptosystem
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CCS
2008
ACM
15 years 5 months ago
Efficient attributes for anonymous credentials
We extend the Camenisch-Lysyanskaya anonymous credential system such that selective disclosure of attributes becomes highly efficient. The resulting system significantly improves ...
Jan Camenisch, Thomas Groß
CCS
2010
ACM
15 years 4 months ago
Hierarchical attribute-based encryption for fine-grained access control in cloud storage services
Cloud computing, as an emerging computing paradigm, enables users to remotely store their data into a cloud so as to enjoy scalable services on-demand. Especially for small and me...
Guojun Wang, Qin Liu, Jie Wu
PKC
2004
Springer
106views Cryptology» more  PKC 2004»
15 years 9 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...
136
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ISAAC
2003
Springer
115views Algorithms» more  ISAAC 2003»
15 years 9 months ago
A Faster Lattice Reduction Method Using Quantum Search
We propose a new lattice reduction method. Our algorithm approximates shortest lattice vectors up to a factor ≤ (k/6)n/2k and makes use of Grover’s quantum search algorithm. Th...
Christoph Ludwig
EUROCRYPT
2006
Springer
15 years 7 months ago
The Function Field Sieve in the Medium Prime Case
In this paper, we study the application of the function field sieve algorithm for computing discrete logarithms over finite fields of the form Fqn when q is a medium-sized prime po...
Antoine Joux, Reynald Lercier