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» Generic Attacks on Feistel Schemes
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ACNS
2007
Springer
94views Cryptology» more  ACNS 2007»
13 years 11 months ago
Preventing Collusion Attacks on the One-Way Function Tree (OFT) Scheme
The one-way function tree (OFT) scheme proposed by Balenson et. al is widely regarded as an efficient key management solution for multicast communication in large dynamic groups. ...
Xuxin Xu, Lingyu Wang, Amr M. Youssef, Bo Zhu
ASIACRYPT
2004
Springer
13 years 10 months ago
Eliminating Random Permutation Oracles in the Even-Mansour Cipher
Abstract. Even and Mansour [EM97] proposed a block cipher construction that takes a publicly computable random permutation oracle P and XORs different keys prior to and after appl...
Craig Gentry, Zulfikar Ramzan
ACNS
2008
Springer
132views Cryptology» more  ACNS 2008»
13 years 11 months ago
Generic Security-Amplifying Methods of Ordinary Digital Signatures
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...
Jin Li, Kwangjo Kim, Fangguo Zhang, Duncan S. Wong
CRYPTO
2008
Springer
120views Cryptology» more  CRYPTO 2008»
13 years 6 months ago
The Random Oracle Model and the Ideal Cipher Model Are Equivalent
The Random Oracle Model and the Ideal Cipher Model are two well known idealised models of computation for proving the security of cryptosystems. At Crypto 2005, Coron et al. showed...
Jean-Sébastien Coron, Jacques Patarin, Yann...
CCS
2009
ACM
14 years 5 months ago
A generic construction of useful client puzzles
Denial of Service (DoS) attacks are serious threats for network societies. For dealing with DoS attacks, Jakobsson and Juels first proposed the notion of useful client puzzles (UC...
Rui Zhang 0002, Goichiro Hanaoka, Hideki Imai