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All Journal ALGORITMA : JURNAL ILMU KOMPUTER DAN INFORMATIKA Building of Informatics, Technology and Science
Liza, Rizko
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Computer Science & IT

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Penerapan Algoritma Vertical Bit Rotation Dalam Pengamanan Data Sekolah Aulia, Rachmat; Dafitri, Haida; Irwandi, Bayu; Liza, Rizko
Building of Informatics, Technology and Science (BITS) Vol 3 No 4 (2022): March 2022
Publisher : Forum Kerjasama Pendidikan Tinggi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (350.527 KB) | DOI: 10.47065/bits.v3i4.1340

Abstract

Cryptography is a science based on mathematical techniques related to security and information such as confidentiality, data integrity and entity authentication. In other words, it means to conduct the process of encoding libraries that act as ciphers, and converting the original text into illegal it. The implementation of encryption process requires a public and a secret key. One of the cryptography techniques applied in the research is the Algorithm of Vertical Bit Rotation (VBR). The VBR is a technique that implements an asymmetric key, which it has a same value in term of data encryption and decryption. The technique is also applied in the shape of an application designed in this research, then have ability to run encryption and decryption process in the format of text file, that providing data security to avoid eavesdropping and illegal access from irresponsible parties. The result done by using VBR is it may run well so have ability to restore the condition of the data in plaintext, then in addition information, encrypted data cannot be returned to its pure form without using a valid key
Implementasi Algoritma Promethee Dalam Melakukan Analisa Performa Matauang Virtual Karim, Ahmad; Diansyah, T.M; Liza, Rizko
Algoritma: Jurnal Ilmu Komputer dan Informatika Vol 6, No 2 (2022): November 2022
Publisher : Universitas Islam Negeri Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30829/algoritma.v6i2.13837

Abstract

Over the last few years, digital currencies have been rapidly gaining public attention: When cryptocurrencies are created, all confirmed transactions are stored in a general ledger. All coin owner identities are encrypted to ensure the validity of the listing. Because the currency is decentralized, when the owner owns the digital coin Neither the government nor the bank has control over it. The number of performance (criteria) of each virtual currency certainly requires an appropriate method to accommodate these criteria. Virtual currency performance analysis can be used as an answer to this problem. Analysis of the performance of virtual currencies is useful for getting the best investment commodities. Performances (criteria) that can be used as a benchmark for the success of a virtual currency as an investment commodity include the price per coin, Market Capitalization, the number of twitter followers, google trends, coin price increases, the number of coins that have been traded (circulating). supply) and the total number of coins available (max supply). The result of this research is an analysis of virtual currency performance with the promethea algorithm. The purpose of this study is to analyze the level of investment need for people who want to do business in the cryptocurrency field and produce a multi-criteria preference index analysis using Promethee. Keywords: Cryptocurrency, virtual money, algorithm
Co-Authors Diansyah, T.M Haida Dafitri, Haida Irwandi, Bayu Karim, Ahmad Rachmat Aulia, Rachmat