APLIKASI KOMBINASI METODE VIGENERE CIPHER DAN METODE AFFINE CIPHER PADA KRIPTOGRAFI
Daftar Isi:
- Cryptography has two main concepts in the process namely the process of encryption and decryption process. The method used in this research is Vigenere Cipher method and Affine Cipher method. This research combines Vigenere Cipher method and Affine Cipher method. First determine the desired Plaintext, then determine the Key used. In this combination requires 4 Key which consists of 2 Key for Vigenere Cipher method and 2 Key for Affine Cipher method. Vigenere Cipher method performs 2 times encryption process and 2 times decryption process because it has 2 Key, while Affine Cipher method perform once encryption process and once decryption process with 2 Key at once. In the encryption process, the Vigenere Cipher method is done at the beginning, then the results are re-encrypted using Affine Cipher method and obtained Ciphertext, while in the decryption, Affine Cipher method is done at the beginning, then the results are redefined by using Vigenere Cipher method and obtained Plaintext. Total encoding process is 6 process consisting 3 encryption process and 3 decryption process with 4 Key which is used, although different length of Plaintext and different Key.