A Post-Quantum Secure and Covert Communication Framework: Hybrid Goppa Code-based Niederreiter Cryptosystem Integrated with LSB Image Steganography

A Post-Quantum Secure and Covert Communication Framework: Hybrid Goppa Code-based Niederreiter Cryptosystem Integrated with LSB Image Steganography

Yogita Chandrakar , B. P. Tripathi
Department of Mathematics,
Govt. N. PG. College of Science, Raipur - 492010(C.G.), India
Email: yogitacg04@gmail.com, Email: bhanu.tripathi@gmail.com

Abstract- The emergence of quantum computing poses a serious threat to conventional cryptographic schemes, necessitating the development of post-quantum cryptosystems. Simultaneously, covert communication demands innovative solutions to ensure secure and unobtrusive data transmission. This paper introduces a hybrid framework integrating the Goppa code-based Niederreiter cryptosystem with the Least Significant Bit (LSB) image steganography. The proposed scheme offers robust post-quantum confidentiality while effectively concealing ciphertext within images to achieve stealth communication. Detailed algorithms and system architecture are presented, underscoring the feasibility and security of the proposed model.

Keywords: Niederreiter cryptosystem, Goppa codes, LSB Image- steganography, Hybrid post-quantum cryptography-steganography.