A unified approach to a fair document exchange system
نویسندگان
چکیده
This paper aims to utilise different approaches to fair document exchange to propose a unified approach for the development of a flexible, general and secure fair document exchange system able to guarantee strong fairness for a document exchange among any number of parties under various situations. At the heart of this unified approach are methods for a verifiable and recoverable encryption of a symmetric (or conventional) key for document encryption and decryption in a simple and efficient manner. The verifiability means that any party can verify the correctness of a key encrypted without actually viewing the key, and the recoverability implies that the party can be assured that a designated party or a group of designated parties can decrypt the encrypted key to recover the original key. These methods are essential for the unified approach to achieve strong fairness. The main contribution of the work presented in this paper is that the unified approach proposed represents the first effort on providing an efficient unified solution for achieving strong fairness in document exchange.
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عنوان ژورنال:
- Journal of Systems and Software
دوره 72 شماره
صفحات -
تاریخ انتشار 2004