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All Journal ALGORITMA : JURNAL ILMU KOMPUTER DAN INFORMATIKA Jurnal Ilmu Komputer dan Sistem Informasi Jurnal Pengabdian Masyarakat
Suriati Suriati
Universitas Harapan Medan
Religion Computer Science & IT Education Library & Information Science Social Sciences

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Penerapan Algoritma Kriptografi Hybrid Subtitusi dan Transposisi Spiral Dalam Mengamankan Data Teks Nurhanipa Siregar; Suriati Suriati; Ari Usman
ALGORITMA : JURNAL ILMU KOMPUTER DAN INFORMATIKA Vol 5, No 1 (2021): April 2021
Publisher : UIN Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30829/algoritma.v5i1.9145

Abstract

Pertukaran data berbasis komputer menghasilkan satu kondisi dimana komputer saling terkait dengankomputer lainnya dalam sebuah jaringan komputer, tetapi juga akan membuat peluang adanya ancamanterhadap pencurian, penyadapan dan pemalsuan data dan informasi. Media komunikasi sebagai alatpengiriman data atau informasi yang melintasi jaringan publik seperti internet ataupun jaringan lokaldiasumsikan dapat diakses oleh siapapun termasuk orang-orang atau pihak-pihak yang memang berniat untukmencuri, menyadap atau mengubah data. Pada penelitian ini untuk mengamankan data teks dilakukanmenggunakan metode kriptografi hybrid dengan menggabungkan Algoritma Substitusi Dan TransposisiSpiral. Hasil penelitian yang telah dilakukan bahwa algoritma kriptografi hybrid substitusi dan transposisispiral berhasil mengamankan data dengan menyisipkan data teks.Kata kunci : pengamanan data,kriptografi hybrid, substitusi, transposisi spiral
SMART DOOR HANDLE BERBASIS INTERNET OF THINGS (IOT) DENGAN SENSOR TOUCH KAPASITIF DAN ALGORITMA FUZZY LOGIC Ahmad Fauzan; Suriati Suriati
Jurnal Ilmu Komputer dan Sistem Informasi Vol. 5 No. 1 (2026): Januari 2026
Publisher : LKP Unity Academy

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70340/jirsi.v5i1.262

Abstract

The development of Internet of Things (IoT) technology offers opportunities to enhance home security through smart devices. This study aims to design and implement an IoT-based Smart Door Handle using a capacitive sensor and a magnetic mounting design that can be easily installed on door handles. The system is equipped with a fuzzy logic model capable of mapping capacitive sensor variables, such as signal amplitude, touch duration, and pattern changes, into real-time threat level decisions. In addition, the device is integrated with notification platforms, namely Blynk and Telegram, allowing users to receive door status information directly and monitor security even when they are away from the location. The test results show that the device can detect touches with adequate accuracy, update security status in real-time, and successfully send notifications to users. The system also allows user management through a web interface, accessible via PC/laptop using mDNS or IP address, and via smartphones using IP address. Based on testing, the system meets the design objectives in terms of monitoring, user management, and real-time notification.
Peningkatan Kompetensi Guru Melalui Pelatihan Penggunaan Artificial Intelligence (AI) di SMA Negeri 5 Medan Dharmawati Dharmawati; Nur Wulan; Divi Handoko; Sarudin Sarudin; Suriati Suriati; Sumi Khairani; Liza Fitriana
Jurnal Pengabdian Masyarakat Vol. 4 No. 2 (2025): Desember 2025
Publisher : Unity Academy

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70340/japamas.v4i2.300

Abstract

The digital era has made artificial intelligence (AI) technology an increasingly important tool in various fields, including education. For high school (SMA) teachers, AI offers great opportunities to improve teaching effectiveness, reduce administrative workload, and create more personal and innovative learning experiences. This Community Service Activity (PKM) is motivated by the lack of teacher competence in creating AI-based learning media. This problem is caused by teachers only having basic skills in using AI, and the majority of teachers experiencing this difficulty are senior teachers born in the 1960s. The objective of this activity is to improve teachers' competence in using AI technology to create teaching materials to support the learning process. The activity is carried out with a combination of lecture and practice methods. The contribution of this activity lies in empowering teachers to independently produce digital teaching media. The evaluation results show that 95% of participants successfully created at least one digital teaching media, 75% of teachers were able to create two or more different designs. These evaluation results indicate that this community service activity is effective in improving the competence of teachers at SMA Negeri 5 Medan.
Co-Authors Ahmad Fauzan Ari Usman Dharmawati Divi Handoko Liza Fitriana Nur Wulan Nurhanipa Siregar Sarudin Sumi Khairani