The Development of CFD for Image Watermarking Problem for Security Based on Asymmetric Cryptography Using Edge Irregular Total k-Labeling of Signed Graph. - Dafik; Ika Hesti Agustin; Arika Indah Kristiana; Udaya Sri Kakarla; S. Siva Shankar; R. Sunder; Indah Lutfiyatul Mursyidah; Rifki Ilham Baihaki (J. Inf. Hiding Multim. Signal Process., 2026)