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CRYPTO
2007
Springer
116views Cryptology» more  CRYPTO 2007»
14 years 1 months ago
Random Oracles and Auxiliary Input
We introduce a variant of the random oracle model where oracle-dependent auxiliary input is allowed. In this setting, the adversary gets an auxiliary input that can contain informa...
Dominique Unruh
CRYPTO
2007
Springer
134views Cryptology» more  CRYPTO 2007»
14 years 1 months ago
Domain Extension of Public Random Functions: Beyond the Birthday Barrier
A public random function is a random function that is accessible by all parties, including the adversary. For example, a (public) random oracle is a public random function {0, 1}ā...
Ueli M. Maurer, Stefano Tessaro
CRYPTO
2007
Springer
104views Cryptology» more  CRYPTO 2007»
14 years 1 months ago
Full Key-Recovery Attacks on HMAC/NMAC-MD4 and NMAC-MD5
At Crypto ā€™06, Bellare presented new security proofs for HMAC and NMAC, under the assumption that the underlying compression function is a pseudo-random function family. Converse...
Pierre-Alain Fouque, Gaëtan Leurent, Phong Q....
CRYPTO
2007
Springer
154views Cryptology» more  CRYPTO 2007»
14 years 1 months ago
A Polynomial Time Attack on RSA with Private CRT-Exponents Smaller Than N 0.073
Wienerā€™s famous attack on RSA with d < N0.25 shows that using a small d for an eļ¬ƒcient decryption process makes RSA completely insecure. As an alternative, Wiener proposed t...
Ellen Jochemsz, Alexander May
CRYPTO
2007
Springer
144views Cryptology» more  CRYPTO 2007»
14 years 1 months ago
Finding Small Roots of Bivariate Integer Polynomial Equations: A Direct Approach
Coppersmith described at Eurocrypt 96 an algorithm for ļ¬nding small roots of bivariate integer polynomial equations, based on lattice reduction. A simpler algorithm was later pro...
Jean-Sébastien Coron
CRYPTO
2007
Springer
105views Cryptology» more  CRYPTO 2007»
14 years 1 months ago
A Generalization of DDH with Applications to Protocol Analysis and Computational Soundness
In this paper we identify the (P, Q)-DDH assumption, as an extreme, powerful generalization of the Decisional Diļ¬ƒe-Hellman (DDH) assumption: virtually all previously proposed gen...
Emmanuel Bresson, Yassine Lakhnech, Laurent Mazar&...
CRYPTO
2007
Springer
106views Cryptology» more  CRYPTO 2007»
14 years 1 months ago
Simulatable VRFs with Applications to Multi-theorem NIZK
Abstract. This paper introduces simulatable veriļ¬able random functions (sVRF). VRFs are similar to pseudorandom functions, except that they are also veriļ¬able: corresponding to...
Melissa Chase, Anna Lysyanskaya
CRYPTO
2007
Springer
86views Cryptology» more  CRYPTO 2007»
14 years 1 months ago
Public Key Encryption That Allows PIR Queries
Dan Boneh, Eyal Kushilevitz, Rafail Ostrovsky, Wil...
CRYPTO
2007
Springer
123views Cryptology» more  CRYPTO 2007»
14 years 1 months ago
Cryptography with Constant Input Locality
Benny Applebaum, Yuval Ishai, Eyal Kushilevitz
CRYPTO
2007
Springer
162views Cryptology» more  CRYPTO 2007»
14 years 1 months ago
Universally-Composable Two-Party Computation in Two Rounds
Round complexity is a central measure of eļ¬ƒciency, and characterizing the round complexity of various cryptographic tasks is of both theoretical and practical importance. We show...
Omer Horvitz, Jonathan Katz