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In Undeniable Signature, a signature’s validity can only be confirmed or disavowed with the help of an alleged signer via a confirmation or disavowal protocol. A Convertible undeniable signature fur...
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 the verifiability of his sign...
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 the verifiability of his sign...
We propose discrete-logarithm-based undeniable signature schemes supporting both We propose discrete-logarithm-based undeniable signature schemes supporting both selective and all conversion, with f...
How to define the security of undeniable signature schemes is a challenging task. This paper presents two security definitions of undeniable signature schemes which are more useful or natural than t...
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 with a trusted center. ...
Han et al. proposed the first identity-based undeniable signature scheme at the fourth ACMconference on electronic commerce. Zhang et al. showed two attacks (the denial attack and the forge attack) a...
At the fourth ACM conference on electronic commerce (EC’03), S. Han, K.Y. Yeung and J. Wang proposed an ID-based confirmer signature scheme using pairings (actually, this is an ID-based undeniable ...
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 impersonation ability...

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