A. Khalaf H, Z. Khalaf R. Hybrid Cryptosystem Using Polybius and Elgamal Algorithm Over the Gaussian Integers . Acad. Sci. J. [Internet]. 2024 Feb. 13 [cited 2024 May 17];2(1):135-47. Available from: https://acadscij.uodiyala.edu.iq/index.php/Home/article/view/344