Implementasi Keamanan Perangkat Lunak Menggunakan Algoritma Kriptografi dan Steganografi berbasis Web

Abstract

Software security has become very important in today's digital era, especially in protecting sensitive data that is often the target of cyber attacks. This research proposes a combination of Advanced Encryption Standard (AES) cryptographic algorithm and Least Significant Bit (LSB) steganography to enhance data security. By encrypting data using AES and hiding it in an image through the LSB method, this system not only protects the content of the data but also reduces the possibility of detection by third parties. The research method includes literature analysis, system prototype development, and testing to evaluate the effectiveness of the implementation. The test results show that the number of message characters has a significant effect on the image size after encoding and execution time. The more characters inserted, the image size increases proportionally, and the execution time for encryption and encoding also increases. This research is expected to contribute to the development of information security technology and practical solutions for software developers in improving application security.