Pre-Quantum to Post-Quantum Cryptography Transition: A Journey Connecting the Security and Challenges Eras

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Author(s): Sayan Das (St. Xavier's University, Kolkata, India)and Arnav Das (India Internet Foundation, Kolkata, India)
Copyright: 2025
Pages: 24
Source title: Integration of AI, Quantum Computing, and Semiconductor Technology
Source Author(s)/Editor(s): Brojo Kishore Mishra (NIST University, Berhampur, India)
DOI: 10.4018/979-8-3693-7076-6.ch012

Keywords: Electrical and Electronics Engineering / Engineering Science Reference / Knowledge Management and Library Science / Quantum Information & Computing

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Abstract

Quantum cryptography is a promising field for securing information against quantum computers. Shor's algorithm, a quantum algorithm, can factor large prime numbers in polynomial time and solve the discrete logarithm problem, which is the basis for classical cryptographic algorithms like Rivest-Shamir-Adleman algorithm (RSA), Diffie-Hellman key exchange (DHKE), and Elliptic Curve Diffie-Hellman algorithm(ECDH). These algorithms pose a significant threat to their security and reliability. Post-quantum cryptography techniques are being implemented by all industries to address the threat posed by quantum supremacy. The chapter discusses the potential threat of Shor's algorithm on classical cryptographic algorithms and discusses post-quantum cryptographic algorithms like lattice-based, multivariate, code-based, and Hash-based cryptography. It also discusses recent advancements that have improved the security and usefulness of these algorithms.

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Pre-Quantum to Post-Quantum Cryptography Transition: A Journey Connecting the Security and Challenges Eras

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