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Open AccessArticle

A Novel Dual Authenticated Encryption Scheme Suitable for Social Networking Services

Department of Computer Science and Engineering, National Taiwan Ocean University, Keelung 202, Taiwan
Appl. Sci. 2019, 9(7), 1452; https://doi.org/10.3390/app9071452
Received: 16 March 2019 / Revised: 3 April 2019 / Accepted: 4 April 2019 / Published: 6 April 2019
Nowadays there are many social networking services supporting three-party communication such as Skype, Line, and Facebook Messenger. To ensure the message security, a cryptographic encryption scheme is a commonly adopted measure. However, the traditional asymmetric encryption only allows one designated recipient to decrypt the ciphertext with his/her private key. It is thus difficult for two parties to share the same ciphertext without exposing their private keys. In this paper, the author comes up with a novel dual authenticated encryption (DAE) scheme designed for three-party communication environments. Specifically, a DAE scheme enables a party to generate a single ciphertext that could be solely decrypted by the other two participants without sharing their private keys. It is also formally shown that the proposed scheme achieves the crucial security properties using the random oracle proof model. View Full-Text
Keywords: dual authenticated encryption; three-party communication; bilinear pairing; public key; cryptography dual authenticated encryption; three-party communication; bilinear pairing; public key; cryptography
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Lin, H.-Y. A Novel Dual Authenticated Encryption Scheme Suitable for Social Networking Services. Appl. Sci. 2019, 9, 1452.

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