Publication Type

Conference Proceeding Article

Version

publishedVersion

Publication Date

2-2017

Abstract

Messaging systems operating within the public cloud are gaining popularity. To protect message confidentiality from the public cloud including the public messaging servers, we propose to encrypt messages in messaging systems using Attribute-Based Encryption (ABE). ABE is an one-to-many public key encryption system in which data are encrypted with access policies and only users with attributes that satisfy the access policies can decrypt the ciphertexts, and hence is considered as a promising solution for realizing expressive and fine-grained access control of encrypted data in public servers. Our proposed system, called Attribute-Based Secure Messaging System with Outsourced Decryption (ABSM-OD), has three key features: enabling expressive and fine-grained access control of encrypted messages by users, supporting outsourced decryption to the cloud while without compromising confidentiality of decrypted messages, and allowing server-aided revocation to provide effective and instant user revocations.

Keywords

Attribute-based encryption, Outsourced decryption, Secure messaging

Discipline

Computer Sciences | Databases and Information Systems | Information Security

Research Areas

Cybersecurity

Publication

A systems approach to cyber security: Proceedings of the 2nd Singapore Cyber-Security R&D Conference (SG-CRC 2017), February 21-22

Volume

15

Editor

Abhik Roychoudhury & Yang Liu

First Page

86

Last Page

96

ISBN

9781614997443

Identifier

10.3233/978-1-61499-744-3-86

Publisher

IOS Press

City or Country

Amsterdam

Copyright Owner and License

Authors

Additional URL

https://doi.org/10.3233/978-1-61499-744-3-86

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