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All Journal MATRIK : Jurnal Manajemen, Teknik Informatika, dan Rekayasa Komputer Journal of Computer Science and Informatics Engineering (J-Cosine) Jurnal Teknologi Informasi, Komputer, dan Aplikasinya (JTIKA ) Jurnal Begawe Teknologi Informasi
Mardiansyah, Ahmad Zafrullah
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Computer Science & IT Decision Sciences, Operations Research & Management Engineering

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Implementasi GNU Privacy Guard (GPG) Hybrid Encryption untuk Meningkatkan Keamanan Informasi pada Layanan Electronic Signature (E-Sign) Universitas Mataram Mardiansyah, Ahmad Zafrullah; Zubaidi, Ariyan; Jatmika, Andy Hidayat; Huwae, Raphael Bianco
Journal of Computer Science and Informatics Engineering (J-Cosine) Vol 8 No 1 (2024): Juni 2024
Publisher : Informatics Engineering Dept., Faculty of Engineering, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jcosine.v8i1.593

Abstract

Electronic signatures have been widely used for administrative purposes since 2020, especially when activities from home are a priority. University of Mataram is one of the state universities that provides electronic signature facilities (E-Sign) for its academic community. The ease of using E-Sign has its own obstacles, one of which is in terms of security protection. Protection in the information security system has a role to take preventive action if the worst scenario occurs to the information system, such as unauthorized access by hackers. Naturally, each signature has been given information related to several things, namely who signed, when it was signed, information for signature purposes, and hash values that can be used to ensure the integrity of the data from the signature. When unauthorized access occurs, hackers can create an identity using the identity of a particular person. This makes E-Sign validation difficult and potentially misused. In this study, a scheme for securing user identity is proposed using GNU Privacy Guard (GPG) to encrypt E-Sign data. The encryption process is carried out with two layers of public-private key cryptography combined with the PGP Key Server.
RANCANG BANGUN PENDETEKSI SERANGAN DEAUTHENTICATION PADA JARINGAN WIFI BERBASIS ESP8266 Nurbayazi, Muhamad; Mardiansyah, Ahmad Zafrullah; Zubaidi, Ariyan
JTIKA (Jurnal Teknik Informatika, Komputer dan Aplikasinya) Vol 6 No 2 (2024): September 2024
Publisher : Program Studi Teknik Informatika, Fakultas Teknik, Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

In the modern era that is so tied to the internet, network security is important because the internet is basicallyinsecure. To connect to an internet network, you can use a wireless network that uses an access point to transmitsignals from WiFi. By using WiFi, users can enjoy communication at home, in the office or while traveling withouthaving to bother using cables, but there are drawbacks to this benefit. Because wifi communications occur over the air, they can be intercepted easily. A relatively easy attack on a WiFi network is a deauthentication attack. Adeauthentication attack is an attack that occurs because too many deauthentication messages are sent. Thisdeauthentication message can be sent by the user's device or access point to notify the receiving device that theircommunications should be terminated. Apart from causing communication disruption between connected devices, deauthentication attacks are also the beginning of other follow-up attacks, one of which is the evil twin attack. To prevent further attacks, a deauthentication attack detection tool is needed so that by detecting deauthentication attacks, users or admins can take preventive and security measures against the WiFi network. This research aims to improve network security, especially WiFi networks, by designing and building a tool that detects and provides warnings when deauthentication attacks occur in the form of visual and audio warnings to WiFi users, both users and admins, by utilizing buzzers and LEDs as well as notifications via the Telegram application so that they can Minimize the occurrence of deauthentication attacks on ESP8266 NodeMCU based WiFi networks. Based on tool testing on 10 access point samples, the tool's percentage of success in detecting deauthentication attacks is 100%
Blockchain-Based TraditionalWeaving Certification and Elliptic Curve Digital Signature Rahman, Pradita Dwi; Wijayanto, Heri; Afwani, Royana; Wesdawara, Wirarama; Mardiansyah, Ahmad Zafrullah
MATRIK : Jurnal Manajemen, Teknik Informatika dan Rekayasa Komputer Vol 24 No 1 (2024)
Publisher : LPPM Universitas Bumigora

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30812/matrik.v24i1.4337

Abstract

Traditional weaving in West Nusa Tenggara was essential to the region’s cultural heritage. Many local micro, small, and medium enterprises continued to practice traditional weaving using natural materials. However, the rise of synthetic materials threatened this tradition, making distinguishing between natural and synthetic woven fabrics difficult. This study aimed to develop a blockchain-based self-certification system to enhance traceability, security, and efficiency using Non-Fungible Tokens. The research method leveraged the Elliptic Curve Digital Signature Algorithm for user authentication and smart contracts to mint Non-Fungible Tokens, ensuring the authenticity and origin of each product.Each product’s metadata was signed with a digital signature that anyone could authenticate, and the outcome and the product metadata became a certificate. This study resulted in a web prototype with an easy-to-use interface that allowed artisans to create certificates and sell their registered works. This solution aimed to ensure the authenticity of traditional woven products by offering secure and transparent blockchain technology.
Application of Design Thinking Method in Redesigning UI/UX Website of Agriculture and Plantation Service of West Nusa Tenggara Province: PENERAPAN METODE DESIGN THINKING DALAM MERANCANG ULANG UI/UX WEBSITE DINAS PERTANIAN DAN PERKEBUNAN PROVINSI NUSA TENGGARA BARAT Oktavianty, Neni; Mardiansyah, Ahmad Zafrullah; Arnawa, Ida Bagus
Jurnal Begawe Teknologi Informasi (JBegaTI) Vol. 6 No. 1 (2025): JBegaTI
Publisher : Program Studi Teknik Informatika, Fakultas Teknik Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbegati.v6i1.1346

Abstract

Teknologi informasi memainkan peran penting dalam meningkatkan efisiensi dan kecepatan dalam pengambilan keputusan serta mendukung transformasi di berbagai sektor. Sesuai dengan Undang-Undang ITE No. 11 Tahun 2008 dan Inpres No. 3 Tahun 2003, setiap instansi publik, termasuk Dinas Pertanian dan Perkebunan Provinsi Nusa Tenggara Barat, diwajibkan untuk mengimplementasikan e-government guna meningkatkan efisiensi, transparansi, dan akuntabilitas. Meskipun Dinas Pertanian dan Perkebunan NTB sudah memiliki sistem informasi, hasil analisis menunjukkan bahwa desain Antarmuka Pengguna (UI) dan Pengalaman Pengguna (UX) masih memiliki banyak kekurangan, desain yang tidak mengikuti tren modern, struktur navigasi yang tidak intuitif, serta pemilihan warna yang kurang mencerminkan identitas sektor pertanian dengan jelas. Untuk itu, dilakukan perancangan ulang UI/UX menggunakan metode Design Thinking yang meliputi tahapan empathize, define, ideate, prototype, dan testing. Hasil dari perancangan ini akan diuji menggunakan System Usability Scale (SUS) untuk mengevaluasi kemudahan penggunaan, efisiensi, dan kepuasan pengguna. Hasil pengujian SUS menunjukkan skor sebesar 79,4 dengan kategori B (Good) menandakan bahwa desain website baru berhasil menciptakan tampilan dan pengalaman pengguna yang lebih baik dibandingkan dengan versi sebelumnya.
INSTALASI IRIGASI TETES BERTENAGA SURYA PADA PERTANIAN LAHAN KERING DESA GUMANTAR KABUPATEN LOMBOK UTARA: Solar-Powered Drip Irrigation Installation On Dryland Farms In Gumantar Village, North Lombok District Zubaidi, Ariyan; Wedashwara, Wirarama; Jatmika, Andy Hidayat; Mardiansyah, Ahmad Zafrullah; Wijayanto, Heri
Jurnal Begawe Teknologi Informasi (JBegaTI) Vol. 5 No. 2 (2024): JBegaTI
Publisher : Program Studi Teknik Informatika, Fakultas Teknik Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbegati.v5i2.1271

Abstract

Desa Gumantar, yang terletak di Kabupaten Lombok Utara, menghadapi tantangan besar dalam sektor pertanian karena kondisi lahan yang kering dan cuaca panas ekstrem. Rendahnya curah hujan dan distribusi air yang terbatas mengakibatkan kesulitan dalam pengelolaan sumber daya air, yang berdampak negatif pada produktivitas pertanian. Untuk mengatasi permasalahan ini, teknologi irigasi hemat air seperti sistem irigasi tetes sangat diperlukan untuk memaksimalkan penggunaan air secara efisien. Selain itu, pemanfaatan tenaga surya sebagai sumber energi alternatif dapat mendukung keberlanjutan pertanian dengan mengurangi ketergantungan pada bahan bakar fosil. Dalam kegiatan pengabdian masyarakat ini, dilakukan instalasi sistem irigasi tetes yang digerakkan oleh tenaga surya pada lahan pertanian di Desa Gumantar. Sistem ini menggunakan panel surya untuk menggerakkan pompa air yang menyalurkan air melalui pipa langsung ke akar tanaman. Hasil implementasi menunjukkan pengurangan biaya operasional yang signifikan, khususnya dalam pengeluaran solar, serta peningkatan produktivitas tanaman tomat dan cabai. Teknologi ini tidak hanya meningkatkan efisiensi penyiraman tetapi juga memberikan pengetahuan dan keterampilan baru kepada petani mengenai teknologi irigasi berkelanjutan yang ramah lingkungan dan efisien.
Training on Solar-Powered Drip Irrigation Installation for Youth and Farmers in Gumantar Village, North Lombok Regency: PELATIHAN INSTALASI IRIGASI TETES BERTENAGA SURYA BAGI PEMUDA DAN PETANI DI DESA GUMANTAR KABUPATEN LOMBOK UTARA Zubaidi, Ariyan; Wirawan, I Gde Putu Wirarama Wedashwara; Jatmika, Andy Hidayat; Mardiansyah, Ahmad Zafrullah; Wijayanto, Heri; Praseba, Diki
Jurnal Begawe Teknologi Informasi (JBegaTI) Vol. 6 No. 2 (2025): JBegaTI
Publisher : Program Studi Teknik Informatika, Fakultas Teknik Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbegati.v6i2.1460

Abstract

Kawasan pertanian di Dusun Amor-Amor, Desa Gumantar, Kabupaten Lombok Utara, menghadapi tantangan serius berupa keterbatasan sumber daya air akibat kondisi lahan kering dengan struktur tanah berpasir. Permasalahan ini berdampak pada produktivitas pertanian yang bergantung pada ketersediaan irigasi. Sebagai solusi, diterapkan teknologi irigasi tetes bertenaga surya yang dinilai hemat energi, efisien dalam penggunaan air, serta ramah lingkungan. Untuk mendukung adopsi teknologi ini secara berkelanjutan, tim pengabdian dari Universitas Mataram melaksanakan program pelatihan bagi petani dan pemuda setempat. Pelatihan dirancang melalui tahapan pengenalan komponen, penyampaian teori, demonstrasi instalasi, praktik lapangan, hingga latihan pengoperasian dan pemeliharaan sistem. Peserta dibagi dalam kelompok kecil untuk memastikan keterlibatan aktif, dengan bimbingan langsung dari dosen dan mahasiswa. Evaluasi dilakukan melalui kuesioner terhadap sepuluh peserta, yang menunjukkan tingkat kepuasan tinggi dengan skor rata-rata di atas 4,0 dari skala 5. Peserta menyatakan pelatihan membantu pemahaman, meningkatkan wawasan, serta menumbuhkan kepercayaan diri untuk menginstalasi dan mengoperasikan sistem secara mandiri. Hasil ini membuktikan bahwa pelatihan instalasi irigasi tetes bertenaga surya tidak hanya efektif dalam meningkatkan kapasitas teknis, tetapi juga berpotensi memperkuat ketahanan pertanian lokal secara efisien dan berkelanjutan.
Blockchain-Based TraditionalWeaving Certification and Elliptic Curve Digital Signature Rahman, Pradita Dwi; Wijayanto, Heri; Afwani, Royana; Wesdawara, Wirarama; Mardiansyah, Ahmad Zafrullah
MATRIK : Jurnal Manajemen, Teknik Informatika dan Rekayasa Komputer Vol. 24 No. 1 (2024)
Publisher : Universitas Bumigora

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30812/matrik.v24i1.4337

Abstract

Traditional weaving in West Nusa Tenggara was essential to the region’s cultural heritage. Many local micro, small, and medium enterprises continued to practice traditional weaving using natural materials. However, the rise of synthetic materials threatened this tradition, making distinguishing between natural and synthetic woven fabrics difficult. This study aimed to develop a blockchain-based self-certification system to enhance traceability, security, and efficiency using Non-Fungible Tokens. The research method leveraged the Elliptic Curve Digital Signature Algorithm for user authentication and smart contracts to mint Non-Fungible Tokens, ensuring the authenticity and origin of each product.Each product’s metadata was signed with a digital signature that anyone could authenticate, and the outcome and the product metadata became a certificate. This study resulted in a web prototype with an easy-to-use interface that allowed artisans to create certificates and sell their registered works. This solution aimed to ensure the authenticity of traditional woven products by offering secure and transparent blockchain technology.
Co-Authors Afwani, Royana Arnawa, Ida Bagus Heri Wijayanto Huwae, Raphael Bianco Jatmika, Andy Hidayat Nurbayazi, Muhamad Oktavianty, Neni Praseba, Diki Rahman, Pradita Dwi Wedashwara, Wirarama Wesdawara, Wirarama Wirawan, I Gde Putu Wirarama Wedashwara Zubaidi, Ariyan