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» Secure Hash-and-Sign Signatures Without the Random Oracle
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PKC
2007
Springer
111views Cryptology» more  PKC 2007»
14 years 1 months ago
Optimistic Fair Exchange in a Multi-user Setting
: This paper addresses the security of optimistic fair exchange in a multi-user setting. While the security of public key encryption and public key signature schemes in a single-us...
Yevgeniy Dodis, Pil Joong Lee, Dae Hyun Yum
ACNS
2005
Springer
167views Cryptology» more  ACNS 2005»
14 years 29 days ago
Identity Based Encryption Without Redundancy
This paper presents a first example of secure identity based encryption scheme (IBE) without redundancy in the sense of Phan and Pointcheval. This modification of the Boneh-Frank...
Benoît Libert, Jean-Jacques Quisquater
TCC
2007
Springer
145views Cryptology» more  TCC 2007»
14 years 1 months ago
(Password) Authenticated Key Establishment: From 2-Party to Group
Abstract. A protocol compiler is described, that transforms any provably secure authenticated 2-party key establishment into a provably secure authenticated group key establishment...
Michel Abdalla, Jens-Matthias Bohli, Maria Isabel ...
IJNSEC
2007
115views more  IJNSEC 2007»
13 years 7 months ago
Security Proof of the Original SOK-IBS Scheme
The identity-based signature (IBS) scheme proposed by Sakai, Ohgishi and Kasahara in 2000, which we refer to as the SOK-IBS scheme, is the first pairing-based IBS scheme. Though ...
Xiao-Ming Lu, Dengguo Feng
EUROCRYPT
2008
Springer
13 years 9 months ago
Towards Key-Dependent Message Security in the Standard Model
Standard security notions for encryption schemes do not guarantee any security if the encrypted messages depend on the secret key. Yet it is exactly the stronger notion of security...
Dennis Hofheinz, Dominique Unruh