NDLI: Polar code-based secure channel coding scheme with small key size

Content Provider	IET Digital Library
Author	Hooshmand, Reza Aref, Mohammad Reza
Abstract	In this study, the secret polar encoding and secret successive cancellation decoding algorithms are introduced; with these algorithms, secure and efficient communication can be enhanced between the honest parties. Also, the key size of the proposed polar code-based secure channel coding system is reduced significantly compared to the existing systems. To decrease the key size, the authors employ the three following methods: (i) a new approach is proposed to save some bit-channel indices instead of saving the generator matrix of the used polar code; (ii) the permutation and scrambling matrices are not used in this scheme; and (iii) by the help of the properties of polar codes, it does not need to save any vector as part of secret key set to generate an error vector. Moreover, the security analyses demonstrate that this system is resistant against conventional attacks on symmetric-key code-based cryptosystems. It means that reducing the key size of the proposed polar code-based scheme does not affect its security level.
Starting Page	2357
Ending Page	2361
Page Count	5
ISSN	17518628
Volume Number	11
e-ISSN	17518636
Issue Number	Issue 15, Oct (2017)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-com/11/15
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-com.2016.1489
Journal	IET Communications
Publisher Date	2017-08-11
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Algebra Bit-channel Indices Channel Coding Code Cryptography Cryptosystems Generator Matrix Matrix Algebra Polar Code Scrambling Matrix Secret Polar Encoding Secret Successive Cancellation Decoding Algorithm Secure Channel Coding Scheme Small Key Size Symmetric-key Code
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Computer Science Applications

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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