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ElGamal encryption system is __________

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ElGamal encryption system is __________

(a) symmetric key encryption algorithm

(b) asymmetric key encryption algorithm

(c) not an encryption algorithm

(d) block cipher method

The question was posed to me during an online interview.

This key question is from Cryptography topic in portion Networking of Computer Network

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Correct choice is (b) asymmetric key encryption algorithm

To elaborate: 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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