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All Journal IJCCS (Indonesian Journal of Computing and Cybernetics Systems) Lontar Komputer: Jurnal Ilmiah Teknologi Informasi Jurnal Teknologi Informasi dan Ilmu Komputer JURNAL MEDIA INFORMATIKA BUDIDARMA Jurnal Teknik Informatika UNIKA Santo Thomas METHODIKA: Jurnal Teknik Informatika dan Sistem Informasi J-SAKTI (Jurnal Sains Komputer dan Informatika) IJISTECH (International Journal Of Information System & Technology) KOMIK (Konferensi Nasional Teknologi Informasi dan Komputer) The IJICS (International Journal of Informatics and Computer Science) JURIKOM (Jurnal Riset Komputer) JOURNAL OF INFORMATION SYSTEM RESEARCH (JOSH) Journal of Computer System and Informatics (JoSYC) INFOKUM TIN: TERAPAN INFORMATIKA NUSANTARA Jurasik (Jurnal Riset Sistem Informasi dan Teknik Informatika) IJISTECH Journal of Informatics Management and Information Technology J-SAKTI (Jurnal Sains Komputer dan Informatika) Bulletin of Information Technology (BIT) Jurnal Teknik Informatika Unika Santo Thomas (JTIUST) Jurnal ABDIMAS Budi Darma Jurnal Sains dan Teknologi Informasi KETIK : Jurnal Informatika
Taronisokhi Zebua
Universitas Budi Darma, Medan
Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Dentistry Earth & Planetary Sciences Economics, Econometrics & Finance Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Neuroscience Nursing Physics Social Sciences Veterinary Other

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Journal : Journal of Computer System and Informatics (JoSYC)

 1 
Implementasi Algoritma Camellia Pada Penyandian Record Database Neti Rusri Yanti; Taronisokhi Zebua
Journal of Computer System and Informatics (JoSYC) Vol 1 No 3 (2020): Journal of Computer System and Informatics (JoSYC) - May 2020
Publisher : Forum Kerjasama Pendidikan Tinggi (FKPT)

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Abstract

Database records in the form of text are very widely used, so it is very vulnerable to data theft by unauthorized parties. In order to maintain the security of database records, it can be done by using cryptographic techniques. Cryptographic techniques can encode database records by encrypting them in the form of passwords that are not understood. The Camellia algorithm is one algorithm that can be relied upon to realize cryptographic techniques. This symmetry algorithm will produce a higher level of security against the database record because it can encode it into a password with a fairly complex process that will make it difficult for cryptanalysts to access the database. This research will use the 128 bit Camellia algorithm for the encryption and decryption process, so that in the process it is necessary to go through several long steps in order to produce the final cipher. This algorithm requires 18 rounds where every six rounds must enter Function F and Function FL-1 and also require as many as 26 subkeys, namely kw, k and kl. This study describes the process of securing a database record by encoding it based on the Camellia algorithm, so that it produces a text record database in the form of a password that is difficult for others to understand and understand. This is done in an effort to minimize acts of misuse of database records.
Penerapan Algoritma Ternary Comma Code Pada Aplikasi Kompresi File Gambar Nurma Ningsih; Surya Darma Nasution; Taronisokhi Zebua
Journal of Computer System and Informatics (JoSYC) Vol 1 No 3 (2020): Journal of Computer System and Informatics (JoSYC) - May 2020
Publisher : Forum Kerjasama Pendidikan Tinggi (FKPT)

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Abstract

Since the discovery of a tool to capture an image (image) in the form of a camera making technological developments not only focus on the tools but also must focus on where the data is stored. The need for storage media is something that is needed in every communication tool. Data and information communication systems are not only in the form of text but can also be in the form of images, videos and audio. Image file size that is relatively larger compared to text files is one of the causes of the amount of memory used for storing image files. The size of the image file can also cause the length of time to send the image file. Image file compression process is one way that can be done to overcome the problem of image file size. Image compression is an attempt to minimize the file size or bytes of a graphic file without reducing the quality of existing images. A certain amount of storage, such as disk space or memory, makes it possible to reduce the image file size. Many algorithms that can be used to compress image file sizes include the ternary comma code algorithm that can help reduce image file sizes. The ternary comma code algorithm has a faster time space compared to other algorithms.
Kinerja Algoritma Yamamoto’s Recursive Code dan Algoritma Fixed Length Binary Encoding pada Kompresi File PDF Yulrismawati Sihura; Taronisokhi Zebua; Hukendik Hutabarat
Journal of Computer System and Informatics (JoSYC) Vol 3 No 4 (2022): August 2022
Publisher : Forum Kerjasama Pendidikan Tinggi (FKPT)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47065/josyc.v3i4.2109

Abstract

The use of files in digital form is currently growing and requires media to store them. The more files that store, the more storage space need. This encourages the development of file reduction techniques or data compression techniques with the aim of reducing the required storage space. The compression technique has several algorithms that can be used to compress files such as Yamamoto's recursive code algorithm and Fixed Length Binary Encoding (FLBE). These algorithms have different performance to produce quality compressed results, so they need to be compared. This study describes the analysis and comparison of the performance of the two algorithms based on the exponential method as measured by the quality of the compressed pdf file. The exponential comparison method is one of the methods of the Decision Support System (DSS) to determine the priority order of decision alternatives with multiple criteria. Compression quality parameters that are measured as an alternative comparison are the value of the ratio of compression, compression ratio, space saving. Based on the results of the comparison with Exponential Comparison Method (MPE), it was found that the fixed length binary encoding algorithm has a better performance with a value of 2.55% compared to the Yamomoto's recursive code algorithm with a smaller value of 2.22%.
Co-Authors - Pristiwanto, - A M Hatuaon Sihite A.A. Ketut Agung Cahyawan W Aditya Trinugraha Agung Lestari Alfarizi, Muhammad Alimah Alimah Anas, Irfan Anda Yanny Berliana Oktaviani Sinaga Citono Harahap Dahanum, Ismay Dian Pratiwi Diana, Mia Dina Lestari, Dina Fince Tinus Waruwu Firman Telaumbanua Fitarius Humendru Garuda Ginting Guidio Leonarde Ginting Halawa, Peber Epenetus Hartika Manao Hasibuan, Alima Hakkon Hikka Sartika Hukendik Hutabarat Imam Saputra Indra Williamsyah Sinaga Ismay Dahanum Juni Ade Nawer Purba Khasanah Khasanah Lubis, Utami Rahma Sari Lubis, Utami Rahma Sari Mahadi Winafil Mesran, Mesran Muhammad Iqbal Nastiti, Sindy Natalia Silalahi Ndruru, Eferoni Nelly Astuti Hasibuan Neti Rusri Yanti Nopiyah Belia Batubara Nurdiyanto, Heri Nurma Ningsih Pristiwanto Pristiwanto Pristiwanto, Pristiwanto Riezky Dermawan Syam Sitepu Rivalri K Hondro Rivalri Kristianto Hondro Ronda Deli Sianturi Sari, Herlina Sembiring, Abdul Sani Silalahi, Yohanna Silalahi, Yohanna Sinurat, Sinar Soni Bahagia Sinaga Soraya Rahma Hayati Sri Wahyuni Suginam Surya Darma Nasution Syukur Novertiani Gulo Tari, Ratiya Tiffani Astrid Winafil, Mahadi Winda Winda Yulrismawati Sihura Zega, Hendra Jaya Zega, Zulfan Anugerah