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All Journal Jurnal Komputer, Informasi dan Teknologi Jurnal Komputer Indonesia
Rohmawan , Eko Prasetiyo
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Computer Science & IT Electrical & Electronics Engineering

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Network-Based Text Message Security System Using the Data Encryption Standard (DES) Algorithm Simanjuntak, Horas Aryanto; Aspriyono , Hari; Rohmawan , Eko Prasetiyo
Jurnal Komputer, Informasi dan Teknologi Vol. 2 No. 2 (2022): Desember
Publisher : Penerbit Jurnal Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53697/jkomitek.v2i2.1042

Abstract

UPT. Puskom as practicum manager has the responsibility to provide facilities including applications needed for each course. In this research, the development of a network-based text security system was carried out by implementing one of the cryptographic algorithms that had been packaged into an application so that students could find out the encryption and decryption processes of the Cryptographic algorithm, namely the Data Encryption Standard (DES) Algorithm. A network-based text message security system using the Data Encryption Standard (DES) Algorithm was built using the Visual Basic .Net Programming Language and SQL Server database. The security system built can help keep messages sent secret from the sender to the recipient of the message through the DES algorithm. The encryption process can be carried out by the user who will send a text message to the intended user, who can open the encryption form and select the intended user, the encrypted message will be stored in the database. Meanwhile, decryption can be done by users who receive text messages by opening the decryption form and displaying the messages sent by the message sender. Based on the tests that have been carried out, it can be concluded that the application is capable of encrypting and decrypting text messages using the DES algorithm.
Implementation of a Computer Network Monitoring System Using Icinga Linux-Based Ubuntu Server at SMA N 1 Bengkulu Tengah Junaidi, Iwan; Wahyudi , Jusuf; Rohmawan , Eko Prasetiyo
Jurnal Komputer, Informasi dan Teknologi Vol. 2 No. 2 (2022): Desember
Publisher : Penerbit Jurnal Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53697/jkomitek.v2i2.1047

Abstract

One of the network monitoring applications is using Icinga with the Linux Ubuntu server operating system. Icinga is a Linux application or tool that can be used to monitor computer networks. Monitoring computer networks using Icinga can monitor data traffic, network traffic and errors that occur on the network. Monitoring traffic and traffic on the network is displayed in graphical form, making it easier to do the analysis. Meanwhile, in monitoring the errors that occur on the network, they are grouped based on the client and service, so it is easy to see which error occurred from the client and what service was used. In operating the network monitoring system with Icinga using the Linux Ubuntu server operating system, the use of computer resources is very small, which is less than 20%.
Application of the Vigenere Cipher Algorithm in Database Security of Employee Performance Values at the South Bengkulu Regency Education and Culture Office Andita, Yolanda Tri; Aspriyono, Hari; Rohmawan , Eko Prasetiyo
Jurnal Komputer Indonesia Vol. 1 No. 2 (2022): Desember
Publisher : Universitas Dehasen Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37676/jki.v1i2.23

Abstract

Security and confidentiality of data or information is an important aspect of data or information. The problem of security and confidentiality of computer data is something that is important in this information age, especially for the South Bengkulu Regency Education and Culture Office. Various ways were done to protect the data or information. Encryption is used to change the original text to unreadable text. Decryption is used to convert unreadable text to original text. Database security application for employee performance values ​​at the South Bengkulu Regency Education and Culture Office was made using the Visual Basic .Net Programming Language and SQL Server Database. In this application, one of the classic cryptographic algorithms has been implemented, namely the Vigenere Cipher Algorithm to secure the contents of the database record, so that what is stored in the database record has been randomized by the algorithm. Based on the encryption results generated by the Vigenere Cipher Algorithm, it is only able to randomize plaintext containing alphabets, and is unable to randomize plaintext containing numeric.
Co-Authors Andita, Yolanda Tri Aspriyono , Hari Hari Aspriyono Junaidi, Iwan Jusuf Wahyudi Simanjuntak, Horas Aryanto