Paper 2025/1245

Integrating and Benchmarking KpqC in TLS/X.509

Minjoo Sim, Hansung University
Gyeongju Song, Hansung University
Minwoo Lee, Hansung University
Seyoung Yoon, Hansung University
Anubhab Baksi, Lund University
Hwajeong Seo, Hansung University
Abstract

This paper reports on the implementation and performance evaluation of Korean Post-Quantum Cryptography standards within existing TLS/X.509 infrastructure. We integrated HAETAE, AIMer, SMAUG-T, and NTRU+—the four KpqC standard algorithms—into the OpenSSL ecosystem via a modified liboqs framework. Then, we measured static overhead (certificate size) and dynamic overhead (TLS handshake latency) under both computational-bound (localhost) and network-bound (LAN) settings. Our results indicate that, focusing on the Korean standards, KpqC certificates are 11.5–48 times larger than the classical ECC baseline. In performance, the tested KpqC KEMs increase handshake latency by over 750\% in computation-bound tests (localhost) and by up to 35\% in network-bound tests (LAN). To our knowledge, this study constitutes the first practical evaluation of KpqC standards in real-world TLS environments, providing concrete performance data to guide post-quantum migration strategies.

Metadata
Available format(s)
PDF
Category
Applications
Publication info
Preprint.
Keywords
Post-quantum CryptographyKpqC AlgorithmsTLS/X.509 Integration
Contact author(s)
minjoos9797 @ gmail com
thdrudwn98 @ gmail com
minunejip @ gmail com
sebbang99 @ gmail com
anubhab baksi @ eit lth se
hwajeong84 @ gmail com
History
2025-07-11: approved
2025-07-06: received
See all versions
Short URL
https://ia.cr/2025/1245
License
Creative Commons Attribution-NonCommercial-ShareAlike
CC BY-NC-SA

BibTeX

@misc{cryptoeprint:2025/1245,
      author = {Minjoo Sim and Gyeongju Song and Minwoo Lee and Seyoung Yoon and Anubhab Baksi and Hwajeong Seo},
      title = {Integrating and Benchmarking {KpqC} in {TLS}/X.509},
      howpublished = {Cryptology {ePrint} Archive, Paper 2025/1245},
      year = {2025},
      url = {https://eprint.iacr.org/2025/1245}
}
Note: In order to protect the privacy of readers, eprint.iacr.org does not use cookies or embedded third party content.