Permutation-Based Lightweight Authenticated Cipher with Beyond Conventional Security

Lightweight authenticated ciphers are specially designed as authenticated encryption (AE) schemes for resource-constrained devices. Permutation-based lightweight authenticated ciphers have gained more attention in recent years. However, almost all of permutation-based lightweight AE schemes only ens...

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Bibliographic Details
Published in:Security and communication networks 2021-10, Vol.2021, p.1-9
Main Author: Zhang, Ping
Format: Article
Language:English
Subjects:
Algorithms
Cryptography
Efficiency
Embedded systems
Encryption
Internet of Things
Lightweight
Optimization
Permutations
Security
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Summary:Lightweight authenticated ciphers are specially designed as authenticated encryption (AE) schemes for resource-constrained devices. Permutation-based lightweight authenticated ciphers have gained more attention in recent years. However, almost all of permutation-based lightweight AE schemes only ensure conventional security, i.e., about c/2-bit security, where c is the capacity of the permutation. This may be vulnerable for an insufficiently large capacity. This paper focuses on the stronger security guarantee and the better efficiency optimization of permutation-based lightweight AE schemes. On the basis of APE series (APE, APERI, APEOW, and APECA), we propose a new improved permutation-based lightweight online AE mode APE+ which supports beyond conventional security and concurrent absorption. Then, we derive a simple security proof and prove that APE+ enjoys at most about minr,c-bit security, where r is the rate of the permutation. Finally, we discuss the properties of APE+ on the hardware implementation.
ISSN:1939-0114
1939-0122
DOI:10.1155/2021/1468007