R. G. SINAMBELA and A. . Fauzi, “DEVELOPMENT OF HYBRID ENCRYPTION METHOD USING AFFINE CIPHER, VIGENERE CIPHER, AND ELGAMAL ALGORITHM TO SECURE TEXT MESSAGES IN DATA COMMUNICATION SYSTEM”, j. of artif. intell. and eng. appl., vol. 2, no. 2, pp. 30–40, Feb. 2023.