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All Journal PROFICIO: Jurnal Pengabdian Masyarakat Bulletin of Network Engineer and Informatics (BUFNETS)
Elvis Pawan
Universitas Cenderawasih
Humanities Computer Science & IT Education Social Sciences Other

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PEMBERDAYAAN MASYARAKAT MELALUI PELATIHAN PEMBUATAN NIB DAN PEMANFAATAN TEKNOLOGI INFORMASI UNTUK MENINGKATKAN PENDAPATAN Eren Arif Budiman; Elvis Pawan
Jurnal Pengabdian Masyarakat FKIP UTP Vol 7 No 2 (2026): PROFICIO : Jurnal Abdimas FKIP UTP
Publisher : PROFICIO

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36728/.v7i2.6605

Abstract

Pengabdian masyarakat ini bertujuan untuk membantu Usaha Mikro, Kecil dan Menengah (UMKM) di Distrik Heram, Kota Jayapura. Permasalahan yang ada pada beberapa UMKM Distrik Heram yaitu kurangnya pengetahuan tentang legalitas usaha berupa izin NIB, tidak adanya identitas usaha berupa logo dan baner, kurangnya pengetahuan tentang pembuatan laporan pembukuan, serta kecilnya target marketing yang ada di umkm dimana hanya diproduksi untuk konsumen terdekat. Diharapkan dengan adanya kegiatan pengabdian masyarakat ini dapat membantu dalam pengembangan UMKM terutama untuk pengelolaan pemasaran dengan cara pemanfaatan digital marketing pada UMKM untuk meningkatkan penjualan dan target pasar konsumen yang lebih banyak dan luas, pemahaman tentang proses izin NIB dan pembuatan laporan pembukuan sederhana dengan menggunakan sistem informasi.
Improving Classical Playfair Cipher Security Using Genetic Algorithm-Based Key Optimization Elvis Pawan; Friden Elefri Neno; Yuliana Yuliana; Putri Dwi Febriana; Damianus Da Awendu
Bulletin of Network Engineer and Informatics Vol. 4 No. 1 (2026): BUFNETS (Bulletin of Network Engineer and Informatics) April 2026
Publisher : PT. GWEX NET PUBLISHER

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59688/s1567c81

Abstract

Even though the need for data security is growing, the standard Playfair Cipher algorithm can still be broken by frequency analysis. This is why this study was done. Ciphertext patterns that are easy to guess are a big problem because they make things less safe. This is especially true for the Playfair Cipher, which can be broken into by frequency analysis if it isn't properly protected. To make things safer, it is important to use stronger encryption methods and update the key management process on a regular basis. As part of designing the algorithm, building the system, and testing how well the cryptosystem works, you need to change the structure of the matrix and shuffle the keys on the fly. The test showed that the time it took to encrypt went up from 12.0 milliseconds to 14.2 milliseconds (+2.2 milliseconds or +18.33%), but the accuracy of the decryption stayed at 100%. The random index value also rose from 0.03636 to 0.06061. This means that the ciphertext is getting more random. The results show that making changes to the Playfair Cipher can make it a lot safer while still keeping it fast enough
Co-Authors Damianus Da Awendu Eren Arif Budiman Friden Elefri Neno Putri Dwi Febriana Yuliana Yuliana