FC
2006
Springer
14 years 3 months ago
2006
Springer
In this paper, we present a broadcast encryption scheme with efficient transmission cost under the log-key restriction. Given n users and r revoked users, our scheme has the trans...
FC
2006
Springer
14 years 3 months ago
2006
Springer
Abstract. At FC'05, Chen et al. introduced an elegant privacy protecting coupon (PPC) system, CESSS05 [13], in which users can purchase multi-coupons and redeem them unlinkabl...
EUROCRYPT
2006
Springer
14 years 3 months ago
2006
Springer
We show that oblivious transfer of bits from A to B can be obtained from a single instance of the same primitive from B to A. Our reduction is perfect and shows that oblivious tran...
EUROCRYPT
2006
Springer
14 years 3 months ago
2006
Springer
Abstract. We give a provable-security treatment for the key-wrap problem, providing definitions, constructions, and proofs. We suggest that key-wrap's goal is security in the ...
EUROCRYPT
2006
Springer
14 years 3 months ago
2006
Springer
We consider the framework of secure n-party computation based on threshold homomorphic cryptosystems as put forth by Cramer,
EUROCRYPT
2006
Springer
14 years 3 months ago
2006
Springer
To prove that a secure key-agreement protocol exists one must at least show P = NP. Moreover any proof that the sequential composition of two non-adaptively secure pseudorandom fun...
EUROCRYPT
2006
Springer
14 years 3 months ago
2006
Springer
Abstract. This paper studies the gaps that exist between cryptography as studied in theory, as defined in standards, as implemented by software engineers, and as actually consumed ...
EUROCRYPT
2006
Springer
14 years 3 months ago
2006
Springer
The holy grail of a mathematical model of secure encryption is to devise a model that is both faithful in its description of the real world, and yet admits a construction for an en...
EUROCRYPT
2006
Springer
14 years 3 months ago
2006
Springer
The Feistel-network is a popular structure underlying many block-ciphers where the cipher is constructed from many simpler rounds, each defined by some function which is derived fr...
EUROCRYPT
2006
Springer
14 years 3 months ago
2006
Springer
Abstract. Lattice-based signature schemes following the GoldreichGoldwasser-Halevi (GGH) design have the unusual property that each signature leaks information on the signer's...