Enhancement of a Lightweight Attribute-Based Encryption Scheme for the Internet of Things
- Authors
- Tan, Syh-Yuan; Yeow, Kin-Woon; Hwang, Seong Oun
- Issue Date
- Aug-2019
- Publisher
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
- Keywords
- Attribute-based; cryptanalysis; encryption; hierarchical; Internet of Things (IoT); key-policy; lightweight
- Citation
- IEEE INTERNET OF THINGS JOURNAL, v.6, no.4, pp.6384 - 6395
- Journal Title
- IEEE INTERNET OF THINGS JOURNAL
- Volume
- 6
- Number
- 4
- Start Page
- 6384
- End Page
- 6395
- URI
- https://scholarworks.bwise.kr/hongik/handle/2020.sw.hongik/1262
- DOI
- 10.1109/JIOT.2019.2900631
- ISSN
- 2327-4662
- Abstract
- In this paper, we present the enhancement of a lightweight key-policy attribute-based encryption (KP-ABE) scheme designed for the Internet of Things (IoT). The KP-ABE scheme was claimed to achieve ciphertext indistinguishability under chosen-plaintext attack in the selective-set model but we show that the KP-ABE scheme is insecure even in the weaker security notion, namely, one-way encryption under the same attack and model. In particular, we show that an attacker can decrypt a ciphertext which does not satisfy the policy imposed on his decryption key. Subsequently, we propose an efficient fix to the KP-ABE scheme as well as extending it to be a hierarchical KP-ABE (H-KP-ABE) scheme that can support role delegation in IoT applications. An example of applying our H-KP-ABE on an IoT-connected healthcare system is given to highlight the benefit of the delegation feature. Lastly, using the NIST curves secp192k1 and secp256k1, we benchmark the fixed (hierarchical) KP-ABE scheme on an Android phone and the result shows that the scheme is still the fastest in the literature.
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Collections - College of Science and Technology > Department of Computer and Information Communications Engineering > 1. Journal Articles
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