Identity-based cryptosystems and signature schemes
Proceedings of CRYPTO 84 on Advances in cryptology
Breaking and repairing a convertible undeniable signature scheme
CCS '96 Proceedings of the 3rd ACM conference on Computer and communications security
RSA-Based Undeniable Signatures for General Moduli
CT-RSA '02 Proceedings of the The Cryptographer's Track at the RSA Conference on Topics in Cryptology
An Improved Scheme of the Gennaro-Krawczyk-Rabin Undeniable Signature System Based on RSA
ICISC '00 Proceedings of the Third International Conference on Information Security and Cryptology
Identity-Based Encryption from the Weil Pairing
CRYPTO '01 Proceedings of the 21st Annual International Cryptology Conference on Advances in Cryptology
Convertible Undeniable Signatures
CRYPTO '90 Proceedings of the 10th Annual International Cryptology Conference on Advances in Cryptology
RSA-Based Undeniable Signatures
CRYPTO '97 Proceedings of the 17th Annual International Cryptology Conference on Advances in Cryptology
Short Signatures from the Weil Pairing
ASIACRYPT '01 Proceedings of the 7th International Conference on the Theory and Application of Cryptology and Information Security: Advances in Cryptology
CRYPTO '89 Proceedings of the 9th Annual International Cryptology Conference on Advances in Cryptology
Identity-based confirmer signatures from pairings over elliptic curves
Proceedings of the 4th ACM conference on Electronic commerce
RSA-Based Undeniable Signatures
Journal of Cryptology
Designated verifier proofs and their applications
EUROCRYPT'96 Proceedings of the 15th annual international conference on Theory and application of cryptographic techniques
New convertible undeniable signature schemes
EUROCRYPT'96 Proceedings of the 15th annual international conference on Theory and application of cryptographic techniques
Invisibility and anonymity of undeniable and confirmer signatures
CT-RSA'03 Proceedings of the 2003 RSA conference on The cryptographers' track
On the generic construction of identity-based signatures with additional properties
ASIACRYPT'06 Proceedings of the 12th international conference on Theory and Application of Cryptology and Information Security
The security of the FDH variant of chaum's undeniable signature scheme
PKC'05 Proceedings of the 8th international conference on Theory and Practice in Public Key Cryptography
Time-selective convertible undeniable signatures
CT-RSA'05 Proceedings of the 2005 international conference on Topics in Cryptology
Verifiable pairing and its applications
WISA'04 Proceedings of the 5th international conference on Information Security Applications
Certificateless undeniable signatures from bilinear maps
Information Sciences: an International Journal
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In this paper, we present the firstconcrete example of identity-based undeniable signature withselective and universal convertibility, where the signer can release a selective proof to make a single undeniable signature publicly verifiable, or publish a universal proof to convert all his undeniable signatures into ordinary digital signatures. Furthermore, we also formalized the security models of identity-based convertible undeniable signatures. The new models capture more essence of the property "convertibility" of identity-based undeniable signatures, compared with other known security models. Our scheme can be regarded as an improvement of Libert and Quisquater's identity-based undeniable signature scheme published in CT-RSA 2004. The security of our scheme is formally proven in the random oracle model under some well-known complexity assumptions. Its unforgeability relies on the hardness of the Computational Diffie-Hellman problem, while the invisibility (and anonymity) is based on the hardness of Decisional Bilinear Diffie-Hellman problem.