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All Journal Jurnal Simantec Jurnal Sains dan Informatika
Pradiptha, Al Diras
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Computer Science & IT Engineering Mathematics

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Implementation of Least Significant Bit Steganography with Caesar Cipher Layout Dvorak web-based Kurnia, Ridhwan Nadif; Pradiptha, Al Diras; Permana, Muhammad Fajar Jati; Dipradja, Kimberly Alfa; Afrizal, Rizki; Pradeka, Deden; Khaerunnisa, Zahra
Jurnal Simantec Vol 14, No 1 (2025): Jurnal Simantec Desember 2025 (Article in Progress)
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/simantec.v14i1.28794

Abstract

Secure data communication is an essential requirement in the digital age, especially in the exchange of confidential information. One of the main problems is the potential for eavesdropping by unauthorised parties who can access open messages. To overcome this, this research aims to develop a website-based system that combines the Least Significant Bit (LSB) method steganography technique and the Caesar cipher method cryptography with the Dvorak keyboard layout to increase data security. The research method used is prototype method with the stages of concept formulation, prototype design, and continuous evaluation. The system was tested by inserting the word ‘TEKKOM’ into a digital image and measuring the quality using Mean Squared Error (MSE) and Peak Signal-to-Noise Ratio (PSNR). The test results show an MSE value of 0.0001466049 and PSNR of 86.47 dB, which means that the visual quality of the image does not decrease significantly and the message is successfully inserted and extracted without errors. The Dvorak keyboard layout adds a layer of security through uncommon input patterns, making it difficult for outsiders to analyse. Thus, the system is able to provide a secure, efficient, and practical solution for web-based information hiding without the need for a database and is still user-friendly.Keywords: Dvorak, Steganography, Caesar Cipher, Least Significant Bit, Website
Analisis Sentimen Suporter terhadap Performa Tim Nasional Sepakbola Indonesia pada Turnamen Sea Games 2023 dengan Metode Naive Bayes Pradiptha, Al Diras; Al Farisi, Farhan Siddiq; Pratama, Muhammad Fahmi; Agustini, Devi Aprianti Rimadhani; Munawir, Munawir
Jurnal Sains dan Informatika Vol. 11 No. 1 (2025): Jurnal Sains dan Informatika
Publisher : Teknik Informatika, Politeknik Negeri Tanah Laut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34128/jsi.v11i1.775

Abstract

Analisis pada sentimen suporter terhadap performa tim nasional sepakbola Indonesia merupakan salah satu topik yang menarik untuk dipelajari. Dalam penelitian ini, digunakan metode Naive Bayes untuk menganalisis sentimen suporter berdasarkan data teks yang dikumpulkan dari media sosial melalui platform Twitter terkait pertandingan tim nasional sepakbola Indonesia. Metode Naive Bayes digunakan karena kemampuannya yang baik dalam klasifikasi teks dan analisis sentimen. Pengolahan data dilakukan dengan bantuan bahasa pemrograman Python dengan library yang telah disediakan. Analisis dilakukan dengan 265 tweet yang berkaitan dengan Tim Nasional Indonesia. Hasil menunjukkan bahwa sebagian besar tweet memiliki sentimen puas atau positif (70,94%), sementara tweet yang bersentimen negatif sebesar 29, 06%. Nilai akurasi yang dihasilkan yaitu sebesar 81%.
Implementation of Least Significant Bit Steganography with Caesar Cipher Layout Dvorak web-based Kurnia, Ridhwan Nadif; Pradiptha, Al Diras; Permana, Muhammad Fajar Jati; Dipradja, Kimberly Alfa; Afrizal, Rizki; Pradeka, Deden; Khaerunnisa, Zahra
Jurnal Simantec Vol 14, No 1 (2025): Jurnal Simantec Desember 2025
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/simantec.v14i1.28794

Abstract

Secure data communication is an essential requirement in the digital age, especially in the exchange of confidential information. One of the main problems is the potential for eavesdropping by unauthorised parties who can access open messages. To overcome this, this research aims to develop a website-based system that combines the Least Significant Bit (LSB) method steganography technique and the Caesar cipher method cryptography with the Dvorak keyboard layout to increase data security. The research method used is prototype method with the stages of concept formulation, prototype design, and continuous evaluation. The system was tested by inserting the word ‘TEKKOM’ into a digital image and measuring the quality using Mean Squared Error (MSE) and Peak Signal-to-Noise Ratio (PSNR). The test results show an MSE value of 0.0001466049 and PSNR of 86.47 dB, which means that the visual quality of the image does not decrease significantly and the message is successfully inserted and extracted without errors. The Dvorak keyboard layout adds a layer of security through uncommon input patterns, making it difficult for outsiders to analyse. Thus, the system is able to provide a secure, efficient, and practical solution for web-based information hiding without the need for a database and is still user-friendly.Keywords: Dvorak, Steganography, Caesar Cipher, Least Significant Bit, Website
Co-Authors Afrizal, Rizki Al Farisi, Farhan Siddiq Deden Pradeka Devi Aprianti Rimadhani Agustini Dipradja, Kimberly Alfa Khaerunnisa, Zahra Kurnia, Ridhwan Nadif Munawir Munawir Permana, Muhammad Fajar Jati Pratama, Muhammad Fahmi