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Shortening the Libert-Peters-Yung Revocable Group Signature Scheme by Using the Random Oracle Methodology
group signature revocation scalability
2016/5/20
In EUROCRYPT 2012, Libert, Peters and Yung (LPY) proposed the first scalable revocable group signature (R-GS) scheme in the standard model which achieves constant signing/verification costs and other ...
The Random Oracle Methodology, Revisited
Correlation Intractability Random Oracle Methodology
2009/4/17
We take a critical look at the relationship between the security of cryptographic schemes in
the Random Oracle Model, and the security of the schemes that result from implementing the
random oracle ...
Indifferentiability, Impossibility Results on Reductions,and Applications to the Random Oracle Methodology
Indistinguishability reductions indifferentiability
2009/4/9
The goals of this paper are three-fold. First we introduce and motivate a generalization
of the fundamental concept of the indistinguishability of two systems, called indifferentiability. This
immed...
On the random-oracle methodology as applied to length-restricted signature schemes
Signature Schemes The Random Oracle Model Interactive Proof systems
2009/4/9
In earlier work, we described a “pathological” example of a signature scheme that is secure
in the Random Oracle Model, but for which no secure implementation exists. For that example,
however, it w...