Kohesi: Jurnal Sains dan Teknologi

Articles

Vol. 10 No. 8 (2026): Kohesi: Jurnal Sains dan Teknologi, ISSN 3025-1311

Sistem Enkripsi Data Menggunakan Algortima Advanced Encryption Standard (AES) Pada Aplikasi Cloud Storage PT. Gajah Tunggal Tbk.

Submitted
January 26, 2026
Published
2026-01-26

Abstract

The rapid development of information and communication technology encourages companies to enhance the security and reliability of digital data management and storage, particularly in cloud-based environments. PT. Gajah Tunggal Tbk, as a large-scale manufacturing company, manages operational data that are critical and confidential, thereby requiring a data security system capable of protecting information from leakage, damage, and unauthorized access. The existing data backup process, which is still performed manually and lacks encryption mechanisms and automated notifications, poses potential security risks and increases the likelihood of human error. Therefore, an information technology–based system is required to secure data through an encryption process before it is stored in cloud storage. This study aims to design and implement a data encryption system using the Advanced Encryption Standard (AES) algorithm in a cloud storage application at PT. Gajah Tunggal Tbk. The AES algorithm was selected because it is a symmetric cryptographic algorithm with a high level of security, efficient processing performance, and has been widely recognized as an international standard for digital data protection. The system development method applied in this research is the Waterfall model, which consists of requirement analysis, system design, implementation, testing, and maintenance stages. Research data were collected through observation, interviews with the IT Support team, and literature study. The results of this study produce a web-based application developed using PHP and MySQL that is capable of performing data encryption and decryption, storing encrypted files in cloud storage, and automatically sending email notifications after the backup process is completed. With the implementation of this system, corporate data security can be improved, the risk of data loss can be minimized, and the backup process becomes safer, more efficient, and monitored in real time.

 

Keywords: Data Encryption, Advanced Encryption Standard (AES), Cloud Storage, Data Security, Database Backup

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