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ISW
2007
Springer
14 years 5 months ago
Identity-Based Proxy Re-encryption Without Random Oracles
A proxy re-encryption scheme allows Alice to temporarily delegate the decryption rights to Bob via a proxy. Alice gives the proxy a re-encryption key so that the proxy can convert ...
Cheng-Kang Chu, Wen-Guey Tzeng
CCS
2009
ACM
14 years 11 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
ISW
2007
Springer
14 years 5 months ago
Strongly-Secure Identity-Based Key Agreement and Anonymous Extension
Abstract. We study the provable security of identity-based (ID-based) key agreement protocols. Although several published protocols have been proven secure in the random oracle mod...
Sherman S. M. Chow, Kim-Kwang Raymond Choo
CORR
2000
Springer
93views Education» more  CORR 2000»
13 years 10 months ago
The Random Oracle Methodology, Revisited
We take a critical look at the relationship between the security of cryptographic schemes in the Random Oracle Model, and the security of the schemes that result from implementing...
Ran Canetti, Oded Goldreich, Shai Halevi
ACISP
2006
Springer
14 years 2 months ago
Efficient and Provably Secure Multi-receiver Identity-Based Signcryption
In this paper, we propose an efficient multi-receiver identity based signcryption scheme which only needs one pairing computation to signcrypt a message for n receivers and can pro...
Shanshan Duan, Zhenfu Cao