IJNSEC
2010
13 years 7 months ago
2010
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...
IJNSEC
2008
13 years 12 months ago
2008
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...
COMCOM
1999
14 years 3 days ago
1999
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 ...
IJNSEC
2007
14 years 10 days ago
2007
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. ...
ISCI
2008
14 years 13 days ago
2008
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...
ISPEC
2010
Springer
14 years 2 months ago
2010
Springer
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 ...
PKC
2004
Springer
14 years 5 months ago
2004
Springer
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...
ASIACRYPT
2004
Springer
14 years 5 months ago
2004
Springer
We introduce a new computational problem related to the interpolation of group homomorphisms which generalizes many famous cryptographic problems including discrete logarithm, Di...
PKC
2005
Springer
14 years 6 months ago
2005
Springer
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...
MYCRYPT
2005
Springer
14 years 6 months ago
2005
Springer
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 ...