C. Not an encryption algorithm D. Block cipher method
Explanation: The ELGamal encryption system was made by Taher Elgamal in the year 1985 and is an asymmetric key algorithm. It is popularly used in PGP and other systems.
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ElGamal encryption system is __________ | Asymmetric key encryption algorithm | CSS, PMS, PPSC, FPSC, KPPSC, SPSC, ISSB and NTS Past Papers | Pakistan's Largest Online Past Papers Database