A SAT-Hard Compound Logic Locking Scheme with Empirical Resistance to Known Structural Attacks. - Sonali Shukla; Govind Rajhans Jadhav; Durgesh Sardan; Suryakant Toraskar; Jaynarayan T. Tudu; Makoto Ikeda; Masahiro Fujita 004; Virendra Singh (DDECS, 2026)