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All Journal Jurnal Riset Mahasiswa Matematika
Siti Nur Fadlilah
Universitas Islam Negeri Maulana Malik Ibrahim Malang, Indonesia
Mathematics

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Penggabungan Algoritma Hill Cipher dan ElGamal untuk Mengamankan Pesan teks Siti Nur Fadlilah; Turmudi Turmudi; Muhammad Khudzaifah
Jurnal Riset Mahasiswa Matematika Vol 1, No 5 (2022): Jurnal Riset Mahasiswa Matematika
Publisher : Mathematics Department, Maulana Malik Ibrahim State Islamic University of Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (326.099 KB) | DOI: 10.18860/jrmm.v1i5.14496

Abstract

Hill Cipher is a one of the symmetric key cryptography algorithm that using an invertible matrix with an order n×n as a key to encrypt and decrypt plaintext. Meanwhile, ElGamal is other asymmetric key cryptography algorithm that use the complexity of discrete logarithms in the encryption and decryption process. In this study, the authors are interest in combine the Hill Cipher and ElGamal algorithms to secure text messages. The author use the matrix as a symmetric key and converts the plaintext in the table of ASCII 256. Then encrypt using the Hill Cipher algorithm which results the ciphertext from messages and ElGamal algorithm results the ciphertext of the symmetric key. In processing decryption using the ElGamal algorithm to determine the symmetric key that will be used as a key in the decryption process with the Hill Cipher algorithm so that the original plaintext is obtained. Then the results obtained are that the combination of the Hill Cipher and ElGamal algorithms to secure text messages can be done it well.
Co-Authors Muhammad Khudzaifah Turmudi, Turmudi