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IJNSEC
2010
100views more  IJNSEC 2010»
9 years 6 months ago
On the Security of Yuan et al.'s Undeniable Signature Scheme
Undeniable signatures were proposed to limit the public verification property of ordinary digital signature. In fact, the verification of such signatures cannot be obtained withou...
Wei Zhao
IJNSEC
2008
122views more  IJNSEC 2008»
9 years 11 months ago
A Zero-knowledge Undeniable Signature Scheme in Non-abelian Group Setting
Recently non-abelian groups have attracted the attention of cryptographers for constructing public-key cryptographic protocols. In this paper we use the conjugacy problem in non-a...
Tony Thomas, Arbind K. Lal
COMCOM
1999
91views more  COMCOM 1999»
9 years 11 months ago
Group-oriented undeniable signature schemes with a trusted center
Undeniable signature is an intriguing concept introduced by Chaum and Antwerpen at Crypto'89. In 1999, Lee and Hwang presented two group-oriented undeniable signature schemes ...
Narn-Yih Lee, Tzonelih Hwang
IJNSEC
2007
130views more  IJNSEC 2007»
9 years 11 months ago
An Attack on Libert et al.' s ID-based Undeniable Signature Scheme
In 2004, Libert and Quisquater proposed an identity based undeniable signature scheme using pairings over elliptic curves. In this article, we show that the scheme is not secure. ...
Zichen Li, C. F. Chong, Lucas Chi Kwong Hui, Siu-M...
ISCI
2008
160views more  ISCI 2008»
9 years 11 months ago
Certificateless undeniable signature scheme
In this paper, we present the first certificateless undeniable signature scheme. The scheme does not suffer from the key escrow problem, which is inherent in identity based crypto...
Shanshan Duan
ISPEC
2010
Springer
10 years 1 months ago
An Efficient Convertible Undeniable Signature Scheme with Delegatable Verification
Abstract. Undeniable signatures, introduced by Chaum and van Antwerpen, require a verifier to interact with the signer to verify a signature, and hence allow the signer to control ...
Jacob C. N. Schuldt, Kanta Matsuura
PKC
2004
Springer
150views Cryptology» more  PKC 2004»
10 years 5 months ago
Undeniable Signatures Based on Characters: How to Sign with One Bit
We present a new undeniable signature scheme which is based on the computation of characters. Our signature scheme offers the advantage of having an arbitrarily short signature. I...
Jean Monnerat, Serge Vaudenay
ASIACRYPT
2004
Springer
10 years 5 months ago
Generic Homomorphic Undeniable Signatures
We introduce a new computational problem related to the interpolation of group homomorphisms which generalizes many famous cryptographic problems including discrete logarithm, Di...
Jean Monnerat, Serge Vaudenay
PKC
2005
Springer
94views Cryptology» more  PKC 2005»
10 years 5 months ago
The Security of the FDH Variant of Chaum's Undeniable Signature Scheme
In this paper, we first introduce a new kind of adversarial goal called forge-and-impersonate in undeniable signature schemes. Note that forgeability does not necessarily imply im...
Wakaha Ogata, Kaoru Kurosawa, Swee-Huay Heng
MYCRYPT
2005
Springer
123views Cryptology» more  MYCRYPT 2005»
10 years 5 months ago
Optimization of the MOVA Undeniable Signature Scheme
This article presents optimization results on the recent MOVA undeniable signature scheme presented by Monnerat and Vaudenay at PKC ’04 as well as its generalization proposed at ...
Jean Monnerat, Yvonne Anne Oswald, Serge Vaudenay
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