RAIRO-Theor. Inf. Appl.
Volume 55, 2021
|Number of page(s)||16|
|Published online||17 September 2021|
A Novel Niederreiter-like cryptosystem based on the (u|u + υ)-construction codes
Faculty of Mathematics, USTHB, Laboratory of Algebraand Number Theory, BP 32 El Alia,
Bab Ezzouar, Algeria.
2 Univ Lyon, UJM-Saint-Etienne, CNRS, Laboratoire Hubert Curien UMR 5516, F-42023, Saint-Etienne, France.
3 Department of Computer Engineering, Faculty of Engineering, Ondokuz Mayis University, Samsun, Turkey.
* Corresponding author: email@example.com
Accepted: 29 July 2021
In this paper, we present a new variant of the Niederreiter Public Key Encryption (PKE) scheme which is resistant against recent attacks. The security is based on the hardness of the Rank Syndrome Decoding (RSD) problem and it presents a (u|u + υ)-construction code using two different types of codes: Ideal Low Rank Parity Check (ILRPC) codes and λ-Gabidulin codes. The proposed encryption scheme benefits are a larger minimum distance, a new efficient decoding algorithm and a smaller ciphertext and public key size compared to the Loidreau’s variants and to its IND-CCA secure version.
Mathematics Subject Classification: 11T71 / 14G50
Key words: Niederreiter-PKE / ILRPC codes / λ-Gabidulin codes / rank-metric codes / IND-CCA security
© The authors. Published by EDP Sciences, 2021
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