Secure and fast chaotic el gamal cryptosystem

Abstract

An enhancement by combining two existing encryption schemes is proposed. It is a combination of a developed Secure and Fast Chaos cryptography and the El Gamal cryptography. The strength of Secure and Fast Chaos cryptography is the avalanche effect in choosing the number of keys of the sender. A variation in the number of keys used will result in different ciphertext for the same plain text. This is combined with the strength of the El Gamal Cryptosystem which is the difficulty of computing discrete logarithms over finite fields. Using the proposed system, the changeability of choosing the random number k by the sender of information will yield different ciphertext for the same plain text.