Multiplying cipher images on visual cryptography with ElGamal algorithm
Alexander Edi Suranta Kacaribu, Ratnadewi Ratnadewi · 2015
ElGamal algorithm was first introduced by ElGamal in 1985. This algorithm is a public key algorithm where the security lies in the difficulty to find discrete logarithms. ElGamal algorithm has been frequently used to encrypt and decrypt text, email, files, and software. In this paper, will be explained how to multiply the number of cipher images so that it will be much harder to crack. Assessment done by MSE (Mean Squared Error) to compare the initial image with the image of the decryption to detect errors. Results of testing MSE is 0. This proves that the initial image and the image of the decryption matrix has the same value.