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International Conference on Intelligent Information Hiding and Multimedia Signal Processing (IIH-MSP)

An Efficient Identity-Based Certified E-mail Protocol

Caifen Wang, Xiaodong Yang, Caihui Lan, Xiaojun Cao

Published Sep 1, 2009• 2 citations
Publisher

Abstract

Signcryption is to perform encryption and signature in a single logical step, and is more efficient than the sign-then-encryption scheme. However, most of the proposed signcryption approaches cannot be used directly by certified e-mail protocol. In this paper, we first develop an id-based signcryption method, which allows a trusted third party to compute a cipher text of a message together with other parties. Then based on the signcryption scheme we propose a new id-based certified e-mail protocol. The fairness, efficiency, and effectiveness of our protocol have been proved.

DOI
10.1109/iih-msp.2009.127

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Signcryption is to perform encryption and signature in a single logical step, and is more efficient than the sign-then-encryption scheme. However, most of the proposed signcryption approaches cannot be used directly by certified e-mail protocol. In this paper, we first develop an id-based signcryption method, which allows a trusted third party to compute a cipher text of a message together with other parties. Then based on the signcryption scheme we propose a new id-based certified e-mail protocol. The fairness, efficiency, and effectiveness of our protocol have been proved.
A certified e-mail protocol is about fair exchange of a message m for its receipt. Fairness is the most important property in exchange. We modify existing W-B signcryption scheme so that it can be used by certified e-mail protocols,and based on the modified scheme we propose a new certified e-mail protocol. The protocol makes use of an off-line and transparent trusted third party only in exceptional circumstances,and has lower computation overhead and better efficiency comparing related protocol.
Certified e-mail protocol is a fair exchange of a message for a receipt between two potentially mistrusting parties over the network. A number of certified e-mail protocols have been studied in recent years. However, most of those protocols employ certificate-based cryptography and full trusted third party, which may not be suitable for wireless networks with limited resources such as power, computation and bandwidth. In this work, we propose an improved identity-based (or ID-based) signcryption & re-encryption scheme. Based on this scheme, we develop a novel certified e-mail protocol in the ID-based settings that employ an off-line semi-trusted third party (STTP) for wireless networks. By avoiding the complicated computation from the public key authentication in the certificate-based cryptography, the proposed scheme can simplify the management of the certification process and reduce communication cost in the system. Our detailed elaboration and analysis shows that the proposed approach is dynamic, lightweight and scalable.
ID-based public key cryptography is proposed to simplify the management of the certification process and greatly reduce the public key authentication computation as well as communication cost. Certified e-mail protocol is a fair exchange of a message for a receipt between two potentially mistrusting parties over the network. A number of certified e-mail protocols have been studied in recent years. However, most of those protocols used certificated-based cryptography and the the full trusted third party employed, may not be suitable for wireless networks that own limited resources such as power, computation and bandwidth. In this paper, we propose an improved identity-based signcryption with re-encryption scheme firstly, then based on the scheme, we develop a novel certified e-mail protocol in Id-based setting that employs an off-line semi-trusted third party STTP for wireless networks, finally the detailed analysis shows that the proposed approach is dynamic, lightweight and scalable. © 2013 ACADEMY PUBLISHER.