An optimistic certified e-mail protocol for the current Internet e-mail architecture

Draper-Gil, Gerard; Ferrer-Gomila, Josep Lluís; Hinarejos, M. Francisca; Tauber, Arne

doi:10.1109/cns.2014.6997507

Cited by 3 publications

References 19 publications

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A Solution for Secure Certified Electronic Mail Using Blockchain as a Secure Message Board

2019

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The certified mail is a value-added service that is widely used in the paper world. However, the scientific community has not yet provided a solution for certified e-mail that has achieved widespread acceptance. This lack of a certified e-mail solution is not due to a lack of proposed approaches; because over the past 40 years, more than 100 protocols have been reported in journals and at conferences. The vast majority of these proposed protocols use a trusted third party (TTP) to achieve fairness. The few solutions without a TTP have not been successful due to their high computational and/or communication cost. Blockchain provides a new approach to develop the protocols without a TTP but without the prior drawbacks of the previous solutions without a TTP. Here, we present a new protocol for certified e-mail based on a blockchain without a conventional TTP that is integrated with the conventional e-mail infrastructure. The protocol is secure, efficient, and viable from a practical perspective.

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A Solution for Secure Certified Electronic Mail Using Blockchain as a Secure Message Board

2019

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Blockchain-Based Fair and Secure Certified Electronic Mail Without a TTP

Elmaghraby

Dimitriou

2021

IEEE Access

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Certified mail is a special postal service that provides the sender with a proof that the mail was successfully received by the other party. However, when it comes to certified electronic mail (CEM), there has not been a widely accepted protocol yet. Most of the existing solutions rely on a Trusted Third Party (TTP) in order to achieve fairness, which can become a bottleneck and lead to more charges and computations. Other solutions that do not rely on a TTP require a high computational and communication cost. Blockchains have allowed the creation of TTP-free protocols for fair exchange; however, the existing Blockchain-based protocols are either too expensive or do not meet the necessary fairness and confidentiality guarantees. In this work, we developed two TTP-free Blockchain-based protocols for certified electronic mail that achieve the required security properties of strong fairness, non-repudiation, timeliness, and confidentiality. The first protocol uses simple bitcoin transactions for a single receiver, whereas the second one implements smart contracts for one or multiple receivers. We have analyzed and compared both protocols to existing TTP-free Blockchain solutions and have demonstrated their superior properties and cost. Furthermore, we have implemented the two protocols in a realistic testbed, demonstrating the viability of our approach.

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The Creation Process of an Individual Grade Sender via E-Mail for Students Running on the Server of Sun Trackers

Szabó

2018

2018 26th Telecommunications Forum (TELFOR)

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An optimistic certified e-mail protocol for the current Internet e-mail architecture

Cited by 3 publications

References 19 publications

A Solution for Secure Certified Electronic Mail Using Blockchain as a Secure Message Board

A Solution for Secure Certified Electronic Mail Using Blockchain as a Secure Message Board

Blockchain-Based Fair and Secure Certified Electronic Mail Without a TTP

The Creation Process of an Individual Grade Sender via E-Mail for Students Running on the Server of Sun Trackers

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