Post-Quantum CRYSTALS-Kyber with Thai Text Seeds: Unicode Normalization and Performance Evaluation
Year: 2026
Type: article
Abstract: This research evaluates Post-Quantum CRYSTALS-Kyber through the generation of seeds from Thai text, highlighting Unicode normalization and performance analysis. This approach relies on user-specified seeds derived from Thai text rather than on random seeds. The proposed method includes Thai text normalization, UTF-8 encoding, and seed generation by using the SHAKE256 hash function for Deterministic Random Bit creation (DRBG) to generate key pairs, followed by system verification through encapsulation and decapsulation operations. Kyber512, Kyber768, and Kyber1024 have been chosen for three investigations. The experimental results demonstrate that Thai seeds consistently maintained 100% accuracy throughout the evaluation. Although the seed generation process requires additional durations of 0.0109ms, 0.0095ms, and 0.0108ms, the effect on total processing time remains small at ±0.6%. Furthermore, the examination of four Unicode normalization forms (NFC, NFD, NFKC, NFKD) verifies that visually indistinguishable Thai texts containing different byte sequences could be normalized to provide identical seed results when SHAKE256 is applied with complete consistency. In addition, these results indicate that Thai seeds not only improve user convenience and linguistic significance but also maintain the security and efficiency of Kyber without reducing performance relative to random seeds. Therefore, this study provides the essential foundation for the establishment of hybrid cryptosystems that accommodate the Thai language. Furthermore, it might be adapted for effective post-quantum security systems in the future. This work bridges linguistic usability and quantum-resistant cryptography, paving the way for culturally inclusive post-quantum systems.
Source: Engineering Access
Institution: Udon Thani Rajabhat University
Language: English
Subfield: Computer Networks and Communications
Field: Computer Science
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W7220091925