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All Journal Jupiter Coding: Jurnal Komputer dan Aplikasi Jurnal Edukasi dan Penelitian Informatika (JEPIN) Jurnal Informatika dan Teknik Elektro Terapan CESS (Journal of Computer Engineering, System and Science) ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Informatika Mulawarman: Jurnal Ilmiah Ilmu Komputer Jurnal RESTI (Rekayasa Sistem dan Teknologi Informasi) JITK (Jurnal Ilmu Pengetahuan dan Komputer) Jurnal Nasional Pendidikan Teknik Informatika (JANAPATI) JURIKOM (Jurnal Riset Komputer) Abdi: Jurnal Pengabdian dan Pemberdayaan Masyarakat JOURNAL OF INFORMATION SYSTEM RESEARCH (JOSH) Lumbung Inovasi: Jurnal Pengabdian Kepada Masyarakat Djtechno: Jurnal Teknologi Informasi Prosiding Seminar Nasional Pengabdian Kepada Masyarakat Jurnal Fokus Elektroda (Energi Listrik, Telekomunikasi, Komputer, Elektronika dan Kendali) Jurnal Informatika: Jurnal Pengembangan IT Jurnal Media Informasi Teknologi Mekongga: Jurnal Pengabdian Masyarakat Media of Computer Science Darma Abdi Karya: Jurnal Pengabdian Kepada Masyarakat
Uray Ristian
Universitas Tanjungpura
Humanities Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Library & Information Science Medicine & Pharmacology Public Health Social Sciences Other

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Implementation of Cryptography using the Rivest Cipher (RC4) Algorithm on QR Code Security for E-Locker Verification Abang Muhammad Sayudi Hamzah; Uray Ristian; Kasliono
Jurnal Media Informasi Teknologi Vol. 3 No. 1 (2026): Februari 2026
Publisher : Digital Innovation

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.69616/mit.v3i1.263

Abstract

The Internet of Things (IoT) based E-Locker system with QR Code authentication offers ease of access, but is vulnerable to threats to the security of Universally Unique Identifier (UUID) data on locker access. This study aims to implement cryptography with the Rivest Cipher 4 (RC4) algorithm to secure UUID data on the server and determine the authentication time on the QR Code barcode to the ESP32-CAM. The RC4 algorithm uses a static key for the user. The encryption process is carried out by the Mobile with the KSA, PGRA and Base64 processes to produce ciphertext. The decryption process is carried out by the server through the Base64, KSA and PGRA processes to produce Plaintext. The test results on the RC4 UUID algorithm stored in the database are sent to the Mobile for encryption and decryption processes where QR Code authentication to the ESP32-CAM sends data to the server for data validation if successful it sends back a notification to the Buzzer once, if it fails it sounds twice. The results of the security test, sniffing was successful using the original UUID data converted to a QR Code barcode and the QR Code was authenticated to the ESP32-CAM so that it produced 2 sounds on the buzzer so that the locker access failed. The data used for authentication was 40 data from each user authenticated 10 times, with the lowest authentication time of 2.83 seconds, the longest authentication time of 12.41 seconds, and an average time of 5.42 seconds.
Implementation of Event-Driven Architecture in Soil Moisture Sensor Data Transmission Based on Master–Slave Cut Chairunnisa Maulidia; Hafiz Muhardi; Uray Ristian; Nirsal Nirsal; Idawati Idawati
Jurnal Media Informasi Teknologi Vol. 3 No. 1 (2026): Februari 2026
Publisher : Digital Innovation

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.69616/mit.v3i1.267

Abstract

The decline in chili crop productivity is partly caused by Soil Moisture that is not properly monitored. Manual monitoring is considered less effective, while IoT systems with periodic data transmission tend to be inefficient. This study develops a Soil Moisture monitoring system based on an Event-Driven master–slave architecture using four ESP32 devices. Three act as slaves connected to Soil Moisture sensors, and one serves as the master responsible for data transmission. The Event-Driven method applies two mechanisms: Batch Update every 5 minutes under normal conditions and Immediate Alert when moisture values fall outside the ideal range of 50–70%. System performance is compared with a non-Event-Driven method based on QoS parameters: delay, jitter, payload, and the number of data packets. Testing is conducted through four scenarios, each lasting one hour. Results show that the Event-Driven system is more efficient. The average delay and jitter are 547.35 ms and 557.05 ms, lower than the non-Event-Driven system (3,340.73 ms and 1,755.71 ms). In addition, fewer packets are sent with larger payloads. Although it does not yet meet the TIPHON standard, this method can transmit data immediately during significant changes while reducing the number of transmitted packets.
Co-Authors Abang Muhammad Sayudi Hamzah Abdahu, Muhammad Raymount Abdul Muid Ajeng Fitria Andry Tanu Wijaya Aqila Zulfahmi Putri, Nessa Ari Widiyantoro Ariansyah Sudarsono Arista, Agamita Sasya Cahyani Bambang Kurniadi Budiman, Andi Caecilia Cantica Gita Mileniae Ahen Cucu Suhery Cucu Suhey Cut Chairunnisa Maulidia Darmawansyah Darmawansyah Dede Kurniawan Dedi Triyanto Dedi Triyanto Deny Syahputra DONI, OKTAVIANUS Dwi Marisa Midyanti Dwi Marisa Midyanti Eka Wahyuni Mudasir Elytia, Elytia Fadhil, Muhammad Fikri Fazar Dawamsyach Firdaus, Sabang Habiburrahman Habiburrahman Hafiz Muhardi Halawa, Yasman Hendra Hendra Hidayat, Donny Hirzen Hasfani Ida Bagus Gede Sarasvananda Idawati, Idawati Ikhwan Ruslianto Indrawan, Muhammad Catur Irham Irham Irma Nirmala Islami, Habi Jaka, Jaka Kartika Sari Kartika Sari Kasliono Kasliono Kesuma Wijaya, Uray Syaziman Krisna Madani Lesmana Dwi Prayudha Linda, Hemma Mahfuza, Sri Marisa Midyanti, Dwi Maulidia Utami Mega Sari Juane Sofiana Mella Geovanie Muhammad Akib Yuswar Nafsiatun Neneng Suriati Nirsal Oktaviani, Sarah Pamela Pamela Perdana, Adhetya Putra Prasetya Elektra Zulfikar Prawira Putra, Dhany Qomarullah, Yusdi Rafli Ramadhan Rohendi Rahmi Hidayati Raihan, Muhammad Rayco William Renny Puspita Sari Ridho Subhi Ridhwan Darmawan Mulya Rifah, Rifah Rifky Rifky Rizki Aditya Robianto Robianto ROKOIYE, SITI Ruqiah Ganda Putri Panjaitan Sabang Firdaus Sampe Hotlan Sitorus Sampe Hotlan Sitorus Sampe Hotlan Sitorus Sampe Hotlan Sitorus, Sampe Hotlan Saputra, Maulida Nandar Saputro, Arinto Mangku Sari, Ita Permata Sofiana Sofiana Solihin Solihin Suhardi Suhardi Sukal Minsas Sy. Irwan Nurdiansyah Syamsul Bahri Syamsul Bahri Syarifah Fathimah Azzahra TAQIYUDDIN, YASPIN Tedy Rismawan Tengku Nopriyanti Murti Uray Syaziman Kesuma Wijaya Valentino, Viktorius Wahyudi Rahmat Warsidah Warsidah Wijaya, Uray Syaziman Kesuma Winarti, Kristiana Ria Yolanda Bru Ginting