Copyright © 2026 Authors retain the copyright of this article. This article is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

@article{189555,
        author = {Ishanvi M H and R Kshamaa Rajoop and Harshada G and Keerthi G S},
        title = {Hybrid Post-Quantum and Classical Cryptography Library Analysis},
        journal = {International Journal of Innovative Research in Technology},
        year = {2025},
        volume = {12},
        number = {7},
        pages = {7631-7634},
        issn = {2349-6002},
        url = {https://ijirt.org/article?manuscript=189555},
        abstract = {The rapid advancement of quantum computing poses a serious threat to existing public-key cryptographic systems, particularly RSA and Elliptic Curve Cryptography (ECC), which form the backbone of secure communications. This survey examines the growing need for quantum-resistant cryptographic solutions by reviewing hybrid cryptographic approaches that combine classical key exchange mechanisms, such as ECDH using X25519, with post-quantum Key Encapsulation Mechanisms, notably ML-KEM (Kyber-768). The survey analyzes dual-secret derivation techniques in which independent secrets from classical and post-quantum primitives are combined using HKDF with strong context binding to ensure security even if one component is compromised. Finally, the survey summarizes reported performance trade-offs, highlighting modest handshake overheads and low key-derivation latency, and positions hybrid cryptography as a practical and defense-in-depth solution during the transition to post-quantum cryptographic standards},
        keywords = {Post-Quantum Cryptography, Hybrid Cryptography, ML-KEM (Kyber), X25519, Quantum-Resistant Security},
        month = {December},
        }