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All Journal CESS (Journal of Computer Engineering, System and Science) InfoTekJar : Jurnal Nasional Informatika dan Teknologi Jaringan JET (Journal of Electrical Technology) Journal of Natural Science and Integration Jatilima : Jurnal Multimedia Dan Teknologi Informasi INFOKUM MEANS (Media Informasi Analisa dan Sistem) INCODING: Journal of Informatics and Computer Science Engineering Instal : Jurnal Komputer Hello World Prosiding Seminar Nasional Teknik UISU (SEMNASTEK) Jurnal Pengabdian Mitra Masyarakat Pascal: Journal of Computer Science and Informatics

Satria Yudha Prayogi

Dosen Universitas Islam Sumatera Utara

Author-ID : 579818

Religion Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Decision Sciences, Operations Research & Management Education Electrical & Electronics Engineering Engineering Law, Crime, Criminology & Criminal Justice Library & Information Science Social Sciences

Published : 18 Documents Claim Missing Document

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Enkripsi Surat Elektronik Menggunakan Metode XXTEA Oris Krianto Sulaiman; Khairuddin Nasution; Satria Yudha Prayogi
CESS (Journal of Computer Engineering, System and Science) Vol 4, No 1 (2019): Januari 2019
Publisher : Universitas Negeri Medan

Pesatnya perkembangan teknologi komputer saat ini sering mengakibatkan penyalahgunaan teknologi tersebut dalam tindakan kriminal. Salah satu yang paling sering terjadi adalah pencutian data yang terkandung dalam surat elektronik (email), account pribadi hingga dokumen-dokumen rahasis. Untuk itu, dirasakan perlunya suatu bentuk pengamanan terhadap hal-hal di atas guna kenyamanan user dalam menggunakan teknologi komputer, yaitu dengan melakukan enkripsi. Enkripsi surat elektronik ini dilakukan dengan menggunakan metode XXTEA. XXTEA adalah sebuah algoritma penyandian yang sederhana, tapi kuat yang berbasis iterasi Feistel dan menggunakan banyak ronde untuk mendapatkan keamanan. Enkripsi dan dekripsi dilakukan terhadap surat elektronik yang menggunakan server google mail (Gmail) yaitu smpt.gmail.com dengan port number 587. Namun sistem ini belum bisa digunakan untuk enkripsi surat elektronik yang menggunakan inbox akun e-mail melalui aplikasi di luar situs www.gmail.com, sehingga masih membutuhkan pengembangan lebih lanjut.

Base64 Sebagai Kunci Keamanan pada One Time Pad (OTP) Oris Krianto Sulaiman; Khairuddin Nasution; Satria Yudha Prayogi
CESS (Journal of Computer Engineering, System and Science) Vol 5, No 2 (2020): JULI 2020
Publisher : Universitas Negeri Medan

Message security in communication is very important to maintain the confidentiality and integrity of messages. The message that is sent must be conveyed in its entirety and only delivered according to its purpose. One Time Pad or OTP is an algorithm that can encrypt messages into ciphertext so that message security can be guaranteed. OTP is a symmetric cryptographic algorithm, that is, the key for encryption and decryption is the same. To perform encryption, the OTP plaintext length must be the same as the key length. This will make it difficult when there is a very long length of plaintext, so the key must also adjust it. OTP keys also have a weakness if a key has been used more than once. Therefore a key builder is needed. In this research, the key generator used is base64. Base64 is used to change the bits of plaintext that will be used by OTP. In this study, base64 can encode plaintext to be used as an OTP key so that it succeeded in making the key generator from base64 encoding.

PENERAPAN METODE SIMPLE ADDITIVE WEIGHTING DALAM PEMILIHAN TABLET PC UNTUK PEMULA Satria Yudha Prayogi
CESS (Journal of Computer Engineering, System and Science) Vol 1, No 1 (2016): Januari 2016
Publisher : Universitas Negeri Medan

Abstrak — Teknologi berkembang secara terus-menerus menyebabkan sumber daya manusia juga harus berkembang untuk mengikutinya. Banyak produk – produk teknologi baru bermunculan yang diiringi dengan persaingan antara vendor raksasa teknologi dalam memasarkan produknya. Mulai dari ponsel yang dulunya hanya dimiliki oleh para eksekutif dan pebisnis kini dapat dimiliki oleh semua orang dari latar belakang apa saja, dari yang tua sampai yang muda. Setelah ponsel, muncul gadget baru bernama tablet. Ukurannya yang lebih besar dari ponsel membuat gadget ini memiliki ciri khas tersendiri. Setelah itu ada lagi phablet yang merupakan gabungan antara phone dan tablet. Namun kebutuhan manusia yang semakin banyak membuat para vendor teknologi harus memikirkan produk baru yang mampu mengimbangi kebutuhan manusia dengan baik. Tablet PC merupakan salah satu dari jawaban itu. Namun karena banyaknya produk di pasaran membuat pembeli bingung yang mana yang cocok untuk keperluannya, khususnya para pemula. Hanya dengan membaca info produk melalui majalah atau internet kadang tidak cukup untuk menemukan produk mana yang cocok untuk mereka gunakan. Dengan memanfaatkan konsep Sistem Pengambilan Keputusan dengan metode Simple Additive Weighting (SAW) dan menggunakan aplikasi Mirosoft Visual Studio 2008 serta database MS Access 2007 dapat diimplementasikan untuk membuat analisa sistem dengan merancang aplikasi untuk menentukan Tablet PC yang cocok untuk digunakan oleh para pemulaKeywords : Sistem Pendukung Keputusan, Simple Additive Weighting, Tablet PC, Mirosoft Visual Studio 2008, MS Access 2007

Perancangan Aplikasi Pemesanan Room SPA pada PT. Royal Amadeus Berbasis Android Sony Bahagia Sinaga; Darlina Tanjung; Satria Yudha Prayogi; Frans Ikorasaki
InfoTekJar : Jurnal Nasional Informatika dan Teknologi Jaringan Vol 6, No 1 (2021): InfoTekJar September
Publisher : Universitas Islam Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30743/infotekjar.v6i1.4364

Pada setiap pemesanan yang diadakan oleh orang-orang, para tamu sudah merasa terbiasa dengan pemesanan room SPA dengan datang langsung pada lokasi pemesanan. Sehingga sebuah pemesanan room SPA dianggap penting bagi semua orang, orang-orang banyak memilih-milih room SPA yang sesuai sehingga dapat menyenangkan hati pelanggan. Banyak tempat pemesanan ruangan SPA yang dapat dijadikan target untuk pemesanan SPA, akan tetapi room SPA yang akan dipesan tidak sesuai dengan keinginan dan juga tidak terdapat banyak pilihan dan solusi pada receptionist. Banyak juga terdapat tempa - tempat yang mengkhususkan pemesanan room SPA yang dapat memberikan informasi bagi para pelanggannya dalam pemilihan room SPA. Namun pada pemesanan room SPA sering terjadi penurunan omset dikarenakan beberapa masalah. Pelanggan sering mengalami kekecewaan pada proses pemesanan room SPA dikarekan tipe dan dan jenis ruangan tidak sesuai dengan pesanan oleh pelanggan serta dalam proses pembayaran room SPA yang dipesan dilakukan secara manual dengan bayar langsung ditempat. Oleh karena itu dibutuhkan sebuah sistem yang dapat membantu pelanggan untuk dapat menerima semua informasi mengenai pemesanan room SPA sekaligus membantu receptionist dalam penerimaan pemesanan pelanggan.

Application Of The CAI Method Of Learning Signs-Traffic Signs For Early Childhood Based On Android Satria Yudha Prayogi
Bahasa Indonesia Vol 11 No 01 (2019): Instal : Jurnal Komputer
Publisher : Cattleya Darmaya Fortuna

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54209/jurnalkomputer.v11i01.3

Traffic signs are part of road safety equipment that contains symbols that serve to convey messages to road users or traffic in an effort to bring order, make it comfortable and safe for road users and the activities of the people around them. Obeying traffic signs for safety and traffic order is very important to avoid accidents and violations of traffic rules. Learning and awareness of the importance of traffic signs needs to be instilled in the community from an early age. Learning is more interesting with the CAI method, which makes early childhood happy in learning the material presented. Early childhood is able to understand the signs presented in the android application.

Implementation Of Watermarking Using The Singular Value Decomposition Method Satria Yudha Prayogi; Sony Bahagia Sinaga
INFOKUM Vol. 10 No. 1 (2021): Desember, Data Mining, Image Processing, and artificial intelligence
Publisher : Sean Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (278.832 KB)

Technological developments have made it easy for the distribution of digital data (such as text, images, audio, and video) both with disk media and through internet media. On the other hand, this convenience can cause problems with copyright protection. One technique to overcome this problem is to insert a sign (watermark) as proof of ownership into digital data known as watermarking. Watermarks can be inserted into the spatial domain or the frequency domain. In general, watermarking in the frequency domain is more resistant to attacks than watermarking in the spatial domain. The watermarking method used in this study uses a transformation domain, namely Singular Value Decomposition (SVD). Tests used to provide a blurring effect). Where the technique using Singular Value Decomposition (SVD) is generally inserted into singular values based on the consideration that the singular value will not experience significant changes if there is a slight disturbance in the image.

Implementation of Question Bank Applications for Website-Based Students Pandi Barita Nauli Simangunsong; Satria Yudha Prayogi; Sony Bahagia Sinaga
INFOKUM Vol. 10 No. 5 (2022): December, Computer and Communication
Publisher : Sean Institute

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

Every tertiary institution, both private and public, has students with high and low scores. This also happened at the Catholic University of Santo Thomas, a private university in Medan, North Sumatra. So a solution is needed that can help students improve their grades, and one way is to make the previous year's questions a reference for student learning. So, a service or application is also needed that accommodates all the questions that exist at a university such as a question bank that can be accessed easily. The Waterfall method is used for the process of developing system engineering and software in an orderly and systematic manner. This method is taken with a systematic approach starting from needs analysis, system and software design, implementation, unit testing and development. In this application, users can upload questions they have, look for questions as references, mark questions that are considered important and download questions that are needed. Where is the purpose of making this application, students no longer have to bother looking for material references through the questions that were tested before. Where is the purpose of making this application, students no longer have to bother looking for material references through the questions that were tested before. The Waterfall method is used for the process of developing system engineering and software in an orderly and systematic manner. This method is taken with a systematic approach starting from needs analysis, system and software design, implementation, unit testing and development. In this application, users can upload questions they have, look for questions as references, mark questions that are considered important and download questions that are needed. Where is the purpose of making this application, students no longer have to bother looking for material references through the questions that were tested before. In this application, users can upload questions they have, look for questions as references, mark questions that are considered important and download questions that are needed. Where is the purpose of making this application, students no longer have to bother looking for material references through the questions that were tested before. In this application, users can upload questions they have, look for questions as references, mark questions that are considered important and download questions that are needed. Where is the purpose of making this application, students no longer have to bother looking for material references through the questions that were tested before.

PERANCANGAN PERANGKAT LUNAK PEMBELAJARAN SIMULASI JARINGAN KOMPUTER DENGAN MENERAPKAN METODE CAI Sony Bahagia Sinaga; Satria Yudha Prayogi
Prosiding Seminar Nasional Teknik UISU (SEMNASTEK) SEMNASTEK UISU 2023
Publisher : Fakultas Teknik Universitas Islam Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (368.382 KB)

The development of computer technology is increasing rapidly, this can be seen in the era of the 80s computer networks are still a puzzle that academics want to answer, and in 1988 computer networks began to be used in universities, companies, now entering the era of this millennium, especially the world wide internet, has become the daily reality of millions of people on this earth. In addition, network hardware and software have completely changed. At the beginning of its development, almost all networks were built from coaxial cable, now many of them are built from fiber optics or wireless communication. With the development of computer and communication technology, a single computer model that serves all the computational tasks of an organization has now been replaced by a set of computers that are separate but interconnected in carrying out their duties, a system like this is called a computer network. In learning computer networks the delivery of conventional learning material is felt to be less able to increase student learning interest. This paper will discuss the creation of computer-based learning applications where the delivery of material is carried out using the CAI (Computer Assisted Instruction) method and the material presented is about the basics of computer networks, in the process presented in the form of materials, exercises and simulations. The purpose of the research to be achieved is to explain how to assemble a computer network using learning simulations to be understood by students. The conclusions obtained Application of the CAI (Computer Assisted Instruction) method in the learning process can provide convenience in the learning process. Where the form of learning is more orderly and easy to access.

BANTUAN MESIN PEMBUATAN TERASI UNTUK PENGUSAHA UMKM DI DESA PULAU KAMPAI KECAMATAN PANGKALAN SUSU KABUPATEN LANGKAT Luthfi Parinduri; Abdul Haris Nasution; Muksin R. Harahap; Bonar Harahap; Ahmad Bakhori; Mahrani Arfah; Satria Yudha Prayogi
Jurnal Pengabdian Mitra Masyarakat Vol 2, No 1 (2022): Edisi September
Publisher : Universitas Islam Sumatear Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30743/jurpammas.v2i1.6011

Economic growth in Indonesia is influenced by various factors, one of which is the involvement of UMKM. In accordance with the 1945 Constitution article 33 paragraph 4, UMKM are part of the national economy with an independent perspective and have great potential to improve people's welfare. The parties responsible for developing and fostering UMKM are the Government, Business Entities and the community, including Universities. Empowerment of UMKM through the provision of mentoring facilities and strengthening assistance aims to grow and improve the capabilities and competitiveness of these UMKM. One of the Terasi entrepreneurs in Pulau Kampai Village who has been producing terasi for more than 10 years, has marketed his products to various regions in North Sumatra and Aceh as well as other areas. The large demand for terasi produced makes it unable to supply. This is because the existing machines are used today are small capacity. Therefore, the UISU Faculty of Engineering has provided assistance in the form of terasi processing machine with a larger capacity. It is hoped that with the use of this assistance machine, its production capacity will increase while at the same time being able to meet the ever-increasing demand.

IMPLEMENTATION OF THE SIMPLE ADDITIVE WEIGHTING (SAW) METHOD IN THE DECISION SUPPORT SYSTEM FOR DETERMINING SCHOLARSHIPS FOR STUDENTS AT THE STIEKOM NORTH SUMATRA EDUCATION FOUNDATION Karo Karo, Siddik; Prayogi, Satria Yudha; Tampubolon, Kennedi; Limbong, Riswan; Tamba, RL. Harmady
Jurnal Multimedia dan Teknologi Informasi (Jatilima) Vol. 6 No. 02 (2024): Jatilima : Jurnal Multimedia Dan Teknologi Informasi
Publisher : Cattleya Darmaya Fortuna

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54209/jatilima.v6i02.710

The allocation of scholarships is a crucial process in educational institutions, aiming to provide financial support to deserving students based on specific criteria. This research explores the implementation of the Simple Additive Weighting (SAW) method within a Decision Support System (DSS) designed to aid in the determination of scholarship recipients at the STIEKOM North Sumatra Education Foundation. The SAW method, known for its simplicity and effectiveness, facilitates the evaluation of multiple criteria by assigning weights to each criterion and calculating a weighted sum for each candidate. This study outlines the development and application of the DSS, focusing on its ability to enhance decision-making accuracy and efficiency in the scholarship awarding process. Through a series of simulations and real-case applications, the system's performance is analyzed, demonstrating its potential to improve transparency and fairness in scholarship distribution. The findings suggest that the SAW-based DSS can serve as a reliable tool for educational institutions in managing scholarship allocations, ensuring that the most qualified students are selected based on a comprehensive evaluation of their academic performance, financial need, and other relevant criteria.

Co-Authors Abdul Haris Nasution Ahmad Bakhori Ananta, Ardhan AULIA, RAHMAT Bonar Harahap Darlina Tanjung Ferdian, Ridho Frans Ikorasaki Harizan, Md Haslina, Siti Kennedi Tampubolon Luthfi Parinduri Mahrani Arfah Muarif, Muarif Muksin R. Harahap Nana Mardiana Oris Krianto Sulaiman Pandi Barita Nauli Simangunsong Riswan Limbong S, Sukartika Siddik Karo-Karo Sinaga, Sony Bahagia Sony Bahagia Sinaga Sony Bahagia Sinaga Sony Bahagia Sinaga Tamba, RL. Harmady

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