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185
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EUROCRYPT
2007
Springer
15 years 11 months ago
2007
Springer
Motivated by the quest for reducing assumptions in security proofs in cryptography, this paper is concerned with designing efficient symmetric encryption and authentication schemes...
203
Voted
ASIACRYPT
2006
Springer
15 years 10 months ago
2006
Springer
The group signature scheme [1], ACJT for short, is popular. In this paper we show that it is not secure. It does not satisfy exculpability. The group manager can sign on behalf of ...
171
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CTRSA
2004
Springer
15 years 10 months ago
2004
Springer
We present a cryptanalysis of a zero-knowledge identification protocol introduced by Naccache et al. at Eurocrypt '95. Our cryptanalysis enables a polynomial-time attacker to ...
159
Voted
CANS
2006
Springer
15 years 10 months ago
2006
Springer
We propose a new computational complexity assumption from bilinear map, based on which we construct Verifier-Local Revocation group signatures with shorter lengths than previous on...
162
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CRYPTO
2006
Springer
15 years 10 months ago
2006
Springer
There are several candidate semantically secure encryption schemes, yet in many applications non-malleability of encryptions is crucial. We show how to transform any semantically s...