APLIKASI ENKRIPSI DAN DESKRIPSI DATA MENGGUNAKAN ALGORITMA RC4 DENGAN MENGGUNAKAN BAHASA PEMROGRAMAN PHP

Abstract

Security and confidentiality of data is currently a very important issue and continues to grow. Some cases involving data security is now a job that requires handling and security costs so much. To maintain the security and confidentiality of messages, data, or information that can not be read or understood by any person, except for recipients who are entitled, then the application of a safety system designed by the method of data encryption using the RC4 algorithm.

RC4 (Rivest Cipher 4) is a Synchrone stream cipher, which has a symmetric key cipher and encrypt the plaintext digits are digits per byte by byte or by combining with a binary operation XOR with a random numbers