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All Journal Jurnal Media Infotama Jurnal Inovasi Kerja Nyata (JIKN)
Putra, Redo Osi
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Earthquake Disaster Mitigation To Improve Community Preparedness In Betungan Village Kurniawan, Dwiki; Andika, Ryndry; Zahesya, Favien Riza; Putra, Redo Osi; Febriansyah, Angga Trio; Fredricka, Jhoanne; Sartika, Devi; Elfianty, Lena
Jurnal Inovasi Kerja Nyata Vol. 1 No. 2 (2025): Desember
Publisher : Universitas Dehasen Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70963/jikn.v1i2.874

Abstract

Indonesia is a country prone to natural disasters, especially earthquakes, due to its location at the meeting point of three major tectonic plates. The lack of education and awareness among the public regarding disaster risks often exacerbates the impact of such events. This Devotion aims to enhance public understanding and preparedness for earthquakes through poster-based disaster mitigation awareness campaigns. The activities were conducted in Betungan Village, Selebar Subdistrict, Bengkulu City, using a qualitative approach. The three stages of the activity included the development of disaster management documents, community organisation, and direct outreach in the field. The results showed an increase in public awareness and knowledge of evacuation and disaster mitigation measures. Despite some technical and social challenges, the activity successfully fostered active community participation and served as an effective model for disaster education at the community level.
Implementasi Kombinasi Hill Cipher Dan Steganografi Least Signifiaction Bit Untuk Evaluasi Kualitas Citra Digital Putra, Redo Osi; Jumadi, Juju; Fhiter. W, Ockhy Jey
Jurnal Media Infotama Vol 22 No 1 (2026): April 2026
Publisher : UNIVED Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37676/jmi.v22i1.9914

Abstract

This study implements a combination of Hill Cipher and Least Significant Bit (LSB) steganography to improve data security and evaluate digital image quality. The Hill Cipher is used to encrypt text with 2×2 key matrix, while LSB inserts the encrypted message into the least significant bits of BMP image. The research method used is applied research with stages of analysis, design, implementation, and testing. The test results show that the integration of these two methods maintains image quality with a low Mean Square Error (MSE) value (0.0001–2.9424) and high Peak Signal-to-Noise Ratio (PSNR) (83.6554–103.4438 dB), indicating visually undetectable changes. The simulations prove the effectiveness of the system in securing data without significant image degradation. The conclusion of this study is that the combination of Hill Cipher and LSB steganography is effective in securing data without significantly compromising image quality. This study also provides an alternative solution for data security by utilizing hybrid cryptography and steganography techniques.
Co-Authors Andika, Ryndry Febriansyah, Angga Trio Fhiter. W, Ockhy Jey Fredricka, Jhoanne Juju Jumadi Kurniawan, Dwiki Lena Elfianty Sartika, Devi Zahesya, Favien Riza