IMPLEMENTASI ALGORITMA CAESAR CIPHER  UNTUK PENGAMANAN PESAN TEKS

Nenni Parida; Jainal Abidin; Aris Munandar Harahap

Nenni Parida Universitas Graha Nusantara
Jainal Abidin Universitas Graha Nusantara
Aris Munandar Harahap Universitas Graha Nusantara

Keywords: Caesar Cipher, cryptography, encryption, decryption, message security

Abstract

This study aims to implement the Caesar Cipher algorithm for securing text messages. The background of this research is the increasing need for information security in digital communication, particularly to protect data from unauthorized access. The method used is the design and development of a system based on the Java programming language that performs encryption and decryption processes using character shifting techniques. The results show that the developed system is capable of converting plaintext into ciphertext and restoring it to its original form based on the given key. System testing indicates that the Caesar Cipher algorithm can be used as a simple method for securing text messages, although it has limitations in terms of security strength. This study is expected to serve as a learning medium for understanding the basic concepts of cryptography.