Practical and provably secure release of a secret and exchange of signatures
EUROCRYPT '93 Workshop on the theory and application of cryptographic techniques on Advances in cryptology
How to simultaneously exchange secrets by general assumptions
CCS '94 Proceedings of the 2nd ACM Conference on Computer and communications security
Fair exchange with a semi-trusted third party (extended abstract)
Proceedings of the 4th ACM conference on Computer and communications security
ACISP '97 Proceedings of the Second Australasian Conference on Information Security and Privacy
Publicly verifiable partial key escrow
ICICS '97 Proceedings of the First International Conference on Information and Communication Security
RSA-Based Undeniable Signatures
CRYPTO '97 Proceedings of the 17th Annual International Cryptology Conference on Advances in Cryptology
Off-Line Fair Payment Protocols Using Convertible Signatures
ASIACRYPT '98 Proceedings of the International Conference on the Theory and Applications of Cryptology and Information Security: Advances in Cryptology
A fair non-repudiation protocol
SP '96 Proceedings of the 1996 IEEE Symposium on Security and Privacy
Publicly verifiable secret sharing
EUROCRYPT'96 Proceedings of the 15th annual international conference on Theory and application of cryptographic techniques
EUROCRYPT'95 Proceedings of the 14th annual international conference on Theory and application of cryptographic techniques
Cryptanalysis of the Wu--Varadhrajan fair exchange protocol
Information Processing Letters
Contract signature in e-commerce
Computers and Electrical Engineering
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In this paper we show how fair exchange of digital signatures can be made possible without a separate verifiable encryption. This means that the fair exchange protocol can be established based on an existing signature algorithm without modification, except that the users need to get a ticket from an off-line trusted third party to enable the fair exchange. The trusted third party is needed to make a judgment only when there is a dispute. Explicit protocols based on different digital signature algorithms are proposed.