Event Details
Post Quantum Cryptography: Code-Based Digital Signature
Presenter: Farshid Haidary Makoui
Supervisor:
Date: Mon, July 17, 2023
Time: 11:00:00 - 00:00:00
Place: ZOOM - Please see below.
ABSTRACT
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Abstract:
Digital signatures ensure legitimate access through identity authentication. It is also used to build blocks in blockchains and to authenticate transactions. The Courtois-Finiasz-Sendrier (CFS) digital signature is a well-known code-based digital signature scheme based on the Niederreiter cryptosystem.
The CFS signature, however, is not widely used due to the long processing time required by its signing algorithm. Most code-based digital signature schemes are based on Niederreiter. The proposed code-based Digital Signature scheme provides less complexity, a higher success rate, and a shorter processing time. The scheme is also secure against public key structural attacks. Key generation, signing, and verification algorithms are presented. The key generation algorithm constructs three-tuple public keys using a dual inverse matrix. The proposed signing scheme presents a code-based digital signature approach, leveraging the McEliece cryptosystem, that offers reduced processing time for generating valid digital signatures. The proposed signing algorithm also constructs smaller signatures. In addition, the verification algorithm checks the integrity value to avoid any forgery before final verification.