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Stateless-Recipient Certified E-mail System based on Verifiable Encryption
 

Summary: Stateless-Recipient Certified E-mail System
based on Verifiable Encryption
Giuseppe Ateniese and Cristina Nita-Rotaru
Department of Computer Science
The Johns Hopkins University
{ateniese,crisn}@cs.jhu.edu
Abstract. In this paper we present a certified e-mail system which pro-
vides fairness while making use of a TTP only in exceptional circum-
stances. Our system guarantees that the recipient gets the content of the
e-mail if and only if the sender receives an incontestable proof-of-receipt.
Our protocol involves two communicating parties, a sender and a recip-
ient, but only the recipient is allowed to misbehave. Therefore, in case
of dispute, the sender solicits TTP's arbitration without involving the
recipient. This feature makes our protocols very attractive in real-world
environments in which recipients would prefer to assume a passive role
rather than being actively involved in dispute resolutions caused by mali-
cious senders. In addition, in our protocol, the recipient can be stateless,
i.e., it does not need to keep state to ensure fairness.
1 Introduction
The Internet has revolutionized the computer and communications world like

  

Source: Ateniese, Giuseppe - Department of Computer Science, Johns Hopkins University
Nita-Rotaru, Cristina - Department of Computer Sciences, Purdue University

 

Collections: Computer Technologies and Information Sciences