Version 1
: Received: 10 August 2024 / Approved: 10 August 2024 / Online: 13 August 2024 (03:11:25 CEST)
How to cite:
Milosavljević, M.; Radomirović, J.; Unkašević, T.; Božilović, B. One Class of Ideally Secret Autonomous Symmetric Ciphering Systems Based on Wiretap Polar Codes. Preprints2024, 2024080756. https://doi.org/10.20944/preprints202408.0756.v1
Milosavljević, M.; Radomirović, J.; Unkašević, T.; Božilović, B. One Class of Ideally Secret Autonomous Symmetric Ciphering Systems Based on Wiretap Polar Codes. Preprints 2024, 2024080756. https://doi.org/10.20944/preprints202408.0756.v1
Milosavljević, M.; Radomirović, J.; Unkašević, T.; Božilović, B. One Class of Ideally Secret Autonomous Symmetric Ciphering Systems Based on Wiretap Polar Codes. Preprints2024, 2024080756. https://doi.org/10.20944/preprints202408.0756.v1
APA Style
Milosavljević, M., Radomirović, J., Unkašević, T., & Božilović, B. (2024). One Class of Ideally Secret Autonomous Symmetric Ciphering Systems Based on Wiretap Polar Codes. Preprints. https://doi.org/10.20944/preprints202408.0756.v1
Chicago/Turabian Style
Milosavljević, M., Tomislav Unkašević and Boško Božilović. 2024 "One Class of Ideally Secret Autonomous Symmetric Ciphering Systems Based on Wiretap Polar Codes" Preprints. https://doi.org/10.20944/preprints202408.0756.v1
Abstract
This paper introduces a class of symmetric ciphering systems with a finite secret key, which provides ideal secrecy, autonomy in key generation and distribution, and robustness against the probabilistic structure of messages (Ideally Secret Autonomous Robust – ISAR system). The ISAR system is based on wiretap polar codes constructed over an artificial wiretap channel with a maximum secrecy capacity of 0.5. The system autonomously maintains a minimum level of key equivocation by continuously refreshing secret keys without needing additional key generation and distribution infrastructure. Thus, this class of systems generalizes Shannon's ideal and strongly ideal ciphering systems. Additionally, it can transform any stream ciphering system with a finite secret key of known length into an ISAR system without the necessity of knowing and/or changing its algorithm. Therefore, this class of system strongly supports privacy, a critical requirement for contemporary security systems. The ISAR system's reliance on wiretap polar coding for strong secrecy ensures resistance to passive attacks with known plaintext messages. Furthermore, resistance to passive attacks on generated keys follows directly from ideal secrecy and autonomy. The results presented offer an efficient methodology for synthesizing this class of systems with predetermined security margins and a complexity of the order of nlogn, where n is the block length of the applied polar code.
Computer Science and Mathematics, Security Systems
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
