Y. Chandrakar and B. P. Tripathi, “Frequency-Domain Concealment of Post-Quantum Syndromes: A Hybrid QC-LDPC Codes Based Niederreiter Cryptosystem With Discrete Cosine Transform (DCT) Image Steganographic Approach ”, IJAIML, vol. 6, no. 8s, pp. 1390–1409, Aug. 2026.