junaidi Junaidi Surya, A. . Louis, F. . Rini, S. . Mulyati, and E. Elzas, “CRYPTOGRAPHIC FRAMEWORK FOR CLOUD-BASED DOCUMENT STORAGE USING AES-256 AND SHA-256 HYBRID SYSTEMS”, jitk, vol. 11, no. 2, pp. 535–549, Dec. 2025.