A randomized protocol for signing contracts
Communications of the ACM
Fair exchange with a semi-trusted third party (extended abstract)
Proceedings of the 4th ACM conference on Computer and communications security
Efficient verifiable encryption (and fair exchange) of digital signatures
CCS '99 Proceedings of the 6th ACM conference on Computer and communications security
ACM Transactions on Computer Systems (TOCS)
An efficient protocol for anonymous and fair document exchange
Computer Networks: The International Journal of Computer and Telecommunications Networking
A Fair-exchange E-commerce Protocol with Automated Dispute Resolution
Proceedings of the IFIP TC11/ WG11.3 Fourteenth Annual Working Conference on Database Security: Data and Application Security, Development and Directions
Stateless-Recipient Certified E-Mail System Based on Verifiable Encryption
CT-RSA '02 Proceedings of the The Cryptographer's Track at the RSA Conference on Topics in Cryptology
Abuse-Free Optimistic Contract Signing
CRYPTO '99 Proceedings of the 19th Annual International Cryptology Conference on Advances in Cryptology
Observations on Non-repudiation
ASIACRYPT '96 Proceedings of the International Conference on the Theory and Applications of Cryptology and Information Security: Advances in Cryptology
Efficient Fair Exchange with Verifiable Confirmation of Signatures
ASIACRYPT '98 Proceedings of the International Conference on the Theory and Applications of Cryptology and Information Security: 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
Optimistic Fair Exchange with Transparent Signature Recovery
FC '01 Proceedings of the 5th International Conference on Financial Cryptography
ACSAC '98 Proceedings of the 14th Annual Computer Security Applications Conference
An Efficient Non-repudiation Protocol
CSFW '97 Proceedings of the 10th IEEE workshop on Computer Security Foundations
A fair non-repudiation protocol
SP '96 Proceedings of the 1996 IEEE Symposium on Security and Privacy
Optimistic fair exchange of digital signatures
IEEE Journal on Selected Areas in Communications
Efficient and secure protocol in fair certified E-mail delivery
WSEAS Transactions on Information Science and Applications
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In this paper we present two variant protocols DSA-CEMD1 and DSA-CEMD2 for certified e-mail delivery with DSA receipts.The protocols are based on a cryptographic primitive called Verifiable and Recoverable Encryption of a Signature (VRES) and are capable of achieving non-repudiation and strong fairness security properties.The novel design of the VRES primitive allows efficiency improvements in comparison with the related certified e-mail delivery protocols based on similar primitives.The protocols employ the services of an off-line and invisible Trusted Third Party (TTP) only in case of dispute.In DSA-CEMD1 the content of the e-mail message is not revealed to the TTP during possible recovery and this is achieved at the cost of some additional cryptographic operations.In DSA-CEMD2 the confidentiality of the message is not protected from the TTP, but the protocol is slightly more efficient.