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DSA-based verifiable and recoverable encryption of signatures and its application in certified e-goods delivery

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4 Author(s)
Nenadic, A. ; Dept. of Comput. Sci., Manchester Univ., UK ; Ning Zhang ; Qi Shi ; Goble, C.

We present a new method for verifiable and recoverable encryption of DSA signatures, and apply this cryptographic primitive in the design of a novel certified e-goods delivery (DSA-CEGD) protocol. The DSA-CEGD protocol has the following features: (1) ensures strong fairness, (2) ensures non-repudiation of origin and non-repudiation of receipt, (3) allows the receiver of an e-goods to verify, during the protocol execution, that the e-goods he is about to receive is the one he is signing the receipt for, (4) does not require the on-line involvement of a fully trusted third party (TTP), but rather an off-line and transparent semi-trusted third party (STTP), and (5) provides the confidentiality protection for the exchanged items from the STTP.

Published in:

e-Technology, e-Commerce and e-Service, 2005. EEE '05. Proceedings. The 2005 IEEE International Conference on

Date of Conference:

29 March-1 April 2005