11 search results - page 2 / 3 » Simple Adaptive Oblivious Transfer without Random Oracle |
COCO
2010
Springer
13 years 6 months ago
2010
Springer
We investigate the question of what languages can be decided efficiently with the help of a recursive collisionfinding oracle. Such an oracle can be used to break collisionresistan...
ASIACRYPT
2007
Springer
13 years 11 months ago
2007
Springer
ersion of an extended abstract to be published in Advances in Cryptology—ASIACRYPT 2007, Springer-Verlag, 2007. Available online from: http://www.cs.stanford.edu/∼xb/asiacrypt0...
CORR
2004
Springer
13 years 5 months ago
2004
Springer
We study a general online convex optimization problem. We have a convex set S and an unknown sequence of cost functions c1, c2, . . . , and in each period, we choose a feasible po...
EUROCRYPT
2004
Springer
13 years 10 months ago
2004
Springer
Abstract. We propose a simple and efficient construction of a CCAsecure public-key encryption scheme from any CPA-secure identity-based encryption (IBE) scheme. Our construction re...
ACNS
2008
Springer
13 years 11 months ago
2008
Springer
We describe two new paradigms on how to obtain ordinary signatures that are secure against existential forgery under adaptively chosen message attacks (fully-secure, in short), fro...