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All Journal JURNAL AKADEMIKA JITK (Jurnal Ilmu Pengetahuan dan Komputer) Journal of Agribusiness and Local Wisdom Building of Informatics, Technology and Science Akademika Fortech : Journal of Information Technology Computing and Information System Journal
Elzas Elzas, Elzas
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Agriculture, Biological Sciences & Forestry Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Electrical & Electronics Engineering Engineering Environmental Science Social Sciences

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CRYPTOGRAPHIC FRAMEWORK FOR CLOUD-BASED DOCUMENT STORAGE USING AES-256 AND SHA-256 HYBRID SYSTEMS Junaidi Surya, junaidi; Louis, Ahmad; Rini, Faiza; Mulyati, Sri; Elzas, Elzas
JITK (Jurnal Ilmu Pengetahuan dan Teknologi Komputer) Vol. 11 No. 2 (2025): JITK Issue November 2025
Publisher : LPPM Nusa Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33480/jitk.v11i2.7132

Abstract

Cloud-based document storage offers significant flexibility but faces security challenges such as the risk of data leaks and illegal modifications. The study proposes a cryptographic framework using a combination of Advanced Encryption Standard (AES)-256 for confidential encryption and Secure Hash Algorithm (SHA)-256 for cloud storage-based document integrity verification. The system was developed with an experimental approach, implemented in application prototypes, and tested on a wide range of file sizes from as small as < 1 mb, 10 mb to 100 mb showing greater efficiency than Rivest-Shamir-Adleman (RSA) and elliptical curve cryptography (ECC). To improve security, a distributed key management scheme and password-based user authentication were added.  The encryption system will be tested on Google Drive, One Drive, and mega cloud platforms and evaluated through a series of performance and security tests combined with on-premises personal computer (PC) systems. This framework provides a practical solution for secure document storage in the cloud with a balance between security, performance, and ease of use. This research reinforces the urgency of applying modern cryptography in dealing with the risk of data leakage in public cloud services, and can be adopted as a security and efficiency model and solution for individuals, as well as government and private offices that use cloud storage as a storage base for important documents such as Decrees, Securities, certificates, diplomas and other important data
Co-Authors - Afrizal Ahmad Husna Ahadi, Ahmad Husna Ahadi Ahmad Louis, Ahmad Aminuddin, Fattachul Huda Faiza Rini Fattachul Huda Aminuddin, Fattachul Huda Aminuddin Ibnu Ridwan, Ahmad Junaidi Surya, Junaidi Lailyn Puad, Lailyn Limia Budiarti, Rike Mahendra, Iqbal Megawati, Merti Novhirtamely Kahar, Novhirtamely Kahar Putri Angga Sari, Anisa Sri Mulyati Sukma Puspitorini, Sukma Puspitorini Windy Adriana Yudha Prasetyo, Danu Yunita Yunita