<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>Data compression combined with effective encryption is a common requirement of data storage and transmission. Low cost of these operations is often a high priority in order to increase transmission speed and reduce power usage. This requirement is crucial for battery-powered devices with limited resources, such as autonomous remote sensors or implants. Well-known and popular encryption techniques are frequently too expensive. This problem is on the increase as machine-to-machine communication and the Internet of Things are becoming a reality. Therefore, there is growing demand for finding trade-offs between security, cost and performance in lightweight cryptography. This article discusses asymmetric numeral systems— an innovative approach to entropy coding which can be used for compression with encryption. It provides a compression ratio comparable with arithmetic coding at a similar speed as Huffman coding; hence, this coding is starting to replace them in new compressors. Additionally, by perturbing its coding tables, the asymmetric numeral system makes it possible to simultaneously encrypt the encoded message at nearly no additional cost. The article introduces this approach and analyzes its security level. The basic application is reducing the number of rounds of some cipher used on ANS-compressed data, or completely removing an additional encryption layer when reaching a satisfactory protection level.</p>
</abstract>

Data compression combined with effective encryption is a common requirement of data storage and transmission. Low cost of these operations is often a high priority in order to increase transmission speed and reduce power usage. This requirement is crucial for battery-powered devices with limited resources, such as autonomous remote sensors or implants. Well-known and popular encryption techniques are frequently too expensive. This problem is on the increase as machine-to-machine communication and the Internet of Things are becoming a reality. Therefore, there is growing demand for finding trade-offs between security, cost and performance in lightweight cryptography. This article discusses asymmetric numeral systems— an innovative approach to entropy coding which can be used for compression with encryption. It provides a compression ratio comparable with arithmetic coding at a similar speed as Huffman coding; hence, this coding is starting to replace them in new compressors. Additionally, by perturbing its coding tables, the asymmetric numeral system makes it possible to simultaneously encrypt the encoded message at nearly no additional cost. The article introduces this approach and analyzes its security level. The basic application is reducing the number of rounds of some cipher used on ANS-compressed data, or completely removing an additional encryption layer when reaching a satisfactory protection level.

Lightweight Compression with Encryption Based on Asymmetric Numeral Systems

International Journal of Applied Mathematics and Computer Science

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

{"article-title":"Lightweight Compression with Encryption Based on Asymmetric Numeral Systems"}

Data compression combined with effective encryption is a common requirement of data storage and transmission. Low cost of these operations is often a high...

Lightweight Compression with Encryption Based on Asymmetric Numeral Systems

Publié en ligne: 29 mars 2023

Pages: 45 - 55

Reçu: 07 févr. 2022

Accepté: 09 nov. 2022

DOI: https://doi.org/10.34768/amcs-2023-0004

Mots clés
symmetric cryptography, lightweight cryptography, data compression, entropy coding

© 2023 Jarosław Duda et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Lightweight Compression with Encryption Based on Asymmetric Numeral Systems

Publié en ligne: 29 mars 2023

Pages: 45 - 55

Reçu: 07 févr. 2022

Accepté: 09 nov. 2022

DOI: https://doi.org/10.34768/amcs-2023-0004

Mots cléssymmetric cryptography, lightweight cryptography, data compression, entropy coding

© 2023 Jarosław Duda et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Mots clés
symmetric cryptography, lightweight cryptography, data compression, entropy coding