1562 search results - page 31 / 313 » Mathematics, Cryptology, Security |
EUROCRYPT
2006
Springer
13 years 11 months ago
2006
Springer
We introduce a practical synchronous stream cipher with provable security named QUAD. The cipher relies on the iteration of a multivariate quadratic system of m equations in n <...
CTRSA
2008
Springer
13 years 9 months ago
2008
Springer
We propose two constructions of chosen-ciphertext secure identity-based encryption (IBE) schemes. Our schemes have a security proof in the standard model, yet they offer performan...
ASIACRYPT
2007
Springer
14 years 2 months ago
2007
Springer
We construct a new group signature scheme using bilinear groups. The group signature scheme is practical, both keys and group signatures consist of a constant number of group elem...
CRYPTO
2001
Springer
14 years 15 days ago
2001
Springer
Building on a previous important work of Cachin, Cr´epeau, and Marcil [15], we present a provably secure and more efficient protocol for 2 1 -Oblivious Transfer with a storage-bou...
ASIACRYPT
2006
Springer
13 years 11 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 ...