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All Journal Sinkron : Jurnal dan Penelitian Teknik Informatika Abdimasku : Jurnal Pengabdian Masyarakat
Arfian, Aldi Azmi
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Computer Science & IT Economics, Econometrics & Finance Health Professions Industrial & Manufacturing Engineering Social Sciences

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Imperceptible and Robust Encryption: Salsa20 Stream Cipher for Colour Image Data Arfian, Aldi Azmi; Sari, Christy Atika; Rachmawanto, Eko Hari; Isinkaye, Folasade Olubusola
Sinkron : jurnal dan penelitian teknik informatika Vol. 8 No. 1 (2024): Articles Research Volume 8 Issue 1, January 2024
Publisher : Politeknik Ganesha Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33395/sinkron.v9i1.13049

Abstract

Data security has become crucial, especially in today's era, therefore we need to protect our personal data to avoid unwanted incidents. The primary objective of this research is to empirically demonstrate the viability of our proposed methodology for encrypting color images using the Salsa20 algorithm, renowned for its stream cipher characteristics, which inherently afford it a swift processing speed. The encryption method we use is to take each pixel from the original image and convert it into bytes based on the RGB value in it, then encrypt it using a keyword that has been converted using a hash function. In this study, we carried out several evaluations to evaluate the performance of the encrypted and decrypted images to test the method we propose, including histogram analysis and compare patterns, visual image testing, and key space analysis. Through this experiment, it has been proven that Salsa20 is effective in maintaining confidentiality and image integrity. Histogram analysis reveals differences in pixel distribution patterns between the original and encrypted images. Visual testing shows that the encrypted image maintains good optical quality. Keyspace analysis ensures the security of encryption keys. The performance evaluation resulted in an NPCR above 99%, UACI had been reached 69.28%, MSE was closes to 0, and the highest PSNR was around 61.89dB, this shows that encrypted images recovered with high accuracy.
Aplikasi Pemilihan Umum RT02 RW12 Kelurahan Meteseh Kecamatan Tembalang Kota Semarang Kurniawan, Ilham Triza; Gymnastiar, Okcadian Hanif; Saputra, Satria Yusuf; Cahyani, Anis Putma; Salsabila, Anggita Alya; Hilmi, Gifari Hilal; Arfian, Aldi Azmi; Hisbullah, Muhammad Dafi; Pratiwi, Saniya Rahma; Naufal, Muhammad Rizky
ABDIMASKU : JURNAL PENGABDIAN MASYARAKAT Vol 7, No 2 (2024): MEI 2024
Publisher : LPPM UNIVERSITAS DIAN NUSWANTORO

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62411/ja.v7i2.2031

Abstract

Pengembangan Aplikasi Pemilihan Umum RT02 RW12 di Kelurahan Meteseh, Semarang, oleh tim mahasiswa Universitas Dian Nuswantoro bertujuan meningkatkan efisiensi dan partisipasi masyarakat dalam pemilihan ketua RT. Aplikasi ini fokus pada literasi digital, melibatkan masyarakat RT02 RW12, dan memastikan partisipasi maksimal. Tahap pelaksanaan mencakup negosiasi, perancangan, konfirmasi, pengembangan, dan pengujian aplikasi. Sosialisasi berhasil meningkatkan pemahaman dan literasi digital peserta. Aplikasi berbasis Laravel menyajikan calon ketua RT dan visi misi mereka. Tim mahasiswa juga berperan sebagai fasilitator pada pemilihan, menciptakan kesuksesan dalam meningkatkan partisipasi masyarakat. Hasilnya, aplikasi ini bukan hanya meningkatkan efisiensi dan transparansi dalam pemilihan ketua RT, tetapi juga mendorong partisipasi aktif masyarakat serta memberikan kontribusi positif terhadap demokratisasi tingkat lokal. Dengan demikian, pengembangan aplikasi ini berhasil menciptakan dampak positif dalam proses pemilihan umum di tingkat RT.
Co-Authors Cahyani, Anis Putma Christy Atika Sari Eko Hari Rachmawanto Gymnastiar, Okcadian Hanif Hilmi, Gifari Hilal Hisbullah, Muhammad Dafi Isinkaye, Folasade Olubusola Kurniawan, Ilham Triza Naufal, Muhammad Rizky Pratiwi, Saniya Rahma Salsabila, Anggita Alya Saputra, Satria Yusuf