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All Journal Elkom: Jurnal Elektronika dan Komputer Jurnal Ilmiah Teknik Mesin, Elektro dan Komputer
Muhammad Khoiruddin Harahap
Unknown Affiliation
Education Electrical & Electronics Engineering Engineering Mechanical Engineering

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Enkripsi Homomorfik Parsial untuk Mendukung Pencarian Data Terenkripsi pada Basis Data Relasional Niko, Niko Surya Atmaja; Surya Atmaja, Niko; Muhammad Khoiruddin Harahap; Sahyunan Harahap
Elkom: Jurnal Elektronika dan Komputer Vol. 18 No. 2 (2025): Desember : Jurnal Elektronika dan Komputer
Publisher : STEKOM PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51903/elkom.v18i2.3312

Abstract

Relational databases store information in interconnected tables and are widely used for data management and retrieval. However, in certain environments, the original values stored in a relational database cannot be exposed during data retrieval. This limitation creates a challenge because common encryption methods only transform data for storage and do not support mathematical operations needed for value matching. Partially Homomorphic Encryption is a cryptographic approach that allows specific mathematical operations to be performed directly on transformed data without restoring it to its original form. This study proposes the use of Partially Homomorphic Encryption to enable value-based data retrieval while keeping all stored values in their transformed form throughout the entire process. The method relies on homomorphic properties that allow mathematical comparison to be conducted on encrypted data, making the retrieval process possible without revealing the original values. The results show that this approach can perform data retrieval operations in a relational database while preserving the transformed structure of the stored data. The proposed method offers an alternative for environments that require data retrieval without exposing original values and demonstrates the potential of homomorphic techniques in supporting secure and functional data processing in relational database contexts.
Aplikasi Penentuan Biaya Pengiriman Pada Web Mitralogistik Dengan Metode Full Costing Cici Kamelia; M. Irfan Ramadhan; Muhammad Khoiruddin Harahap
Jurnal Ilmiah Teknik Mesin, Elektro dan Komputer Vol. 6 No. 2 (2026): Juli: Jurnal Ilmiah Teknik Mesin, Elektro dan Komputer
Publisher : Lembaga Pengembangan Kinerja Dosen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51903/juritek.v6i2.7581

Abstract

The logistics and freight forwarding industry continues to develop in line with the increasing demand for fast, accurate, and transparent delivery services. PT. Naira Mitralogistik Indonesia currently utilizes a website as an information medium; however, it does not yet provide an automatic shipping cost calculation feature. Customers still need to contact customer service to obtain shipping cost information, resulting in service delays, inefficiency, and the potential for human error in determining shipping tariffs. Therefore, this study aims to develop a web-based shipping cost determination application by implementing the Full Costing method to generate more accurate and transparent shipping cost calculations. The application was developed using the Waterfall software development model, while software analysis and design employed Data Flow Diagram (DFD) and Entity Relationship Diagram (ERD). The Full Costing method calculates shipping costs by considering all operational cost components, including fuel costs, labor costs, and other operational expenses. The application determines shipping costs based on the origin city, destination city, shipping distance, item type, and item weight. The research resulted in a web-based application capable of automatically calculating shipping cost estimates in real-time. The implementation of the application improves operational efficiency, minimizes tariff calculation errors, and enables customers to obtain shipping cost information independently. Consequently, the developed application contributes to improving service quality and operational effectiveness at PT. Naira Mitralogistik Indonesia
Co-Authors Cici Kamelia M. Irfan Ramadhan Niko, Niko Surya Atmaja Sahyunan Harahap Surya Atmaja, Niko