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All Journal Jurnal TIMES The IJICS (International Journal of Informatics and Computer Science) Jurnal Sistem Komputer dan Informatika (JSON) Jurnal Info Sains : Informatika dan Sains
Eliasta Ketaren
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Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering

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Analisis Perbandingan BLAKE2S dan SHA3-512 dalam Pengujian Ketahanan terhadap Serangan Bruteforce Mokolanot, Rizky Akbar; Eliasta Ketaren; Mans Lumiu Mananohas
Jurnal Sistem Komputer dan Informatika (JSON) Vol. 7 No. 3 (2026): Maret 2026
Publisher : Universitas Budi Darma

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30865/json.v7i3.9667

Abstract

Perkembangan teknologi komputasi modern, seperti high-performance computing, cloud computing, dan GPU, telah meningkatkan kemampuan penyerang dalam melakukan serangan brute force terhadap sistem kriptografi. Penelitian ini bertujuan untuk menganalisis dan membandingkan ketahanan dua algoritma hash modern, yaitu BLAKE2s dan SHA3-512, terhadap serangan brute force dalam konteks pengamanan data berbasis steganografi video. Metode penelitian dilakukan melalui pengujian empiris dengan mengukur waktu cracking, hash rate, serta jumlah percobaan yang dibutuhkan untuk menemukan nilai hash. Hasil penelitian menunjukkan bahwa SHA3-512 memiliki ketahanan yang lebih tinggi dibandingkan BLAKE2s, dengan waktu cracking sebesar 511.479 detik, sementara BLAKE2s hanya membutuhkan 216.156 detik. Perbedaan ini dipengaruhi oleh hash rate BLAKE2s yang lebih tinggi, yaitu 1.350.846 H/s, dibandingkan SHA3-512 sebesar 570.881 H/s, sehingga mempercepat proses brute force. Meskipun demikian, waktu embedding kedua algoritma relatif sama, dengan selisih yang tidak signifikan. Jumlah percobaan brute force pada kedua algoritma juga identik, yaitu 291.993.781 percobaan, yang menunjukkan bahwa perbedaan ketahanan lebih dipengaruhi oleh efisiensi komputasi daripada kompleksitas ruang pencarian. Dengan demikian, SHA3-512 direkomendasikan sebagai algoritma hash yang lebih aman untuk melindungi data rahasia terhadap serangan brute force, meskipun memiliki performa yang lebih rendah dibandingkan BLAKE2s
Development Web-Based Patient Registration and Queue Management System Using RAD Method with QR Code Verification Hizkia Saraun, Samuel Imanuel; Eliasta Ketaren
The IJICS (International Journal of Informatics and Computer Science) Vol. 10 No. 1 (2026): Maret
Publisher : Universitas Budi Darma

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30865/ijics.v10i1.9665

Abstract

The smoothness of healthcare services, particularly in the registration and queuing processes, is a key factor influencing patient satisfaction. The Bunda Meifa Foundation Clinic, located in Tondano, faces challenges in patient management due to its manual registration process and dynamic doctor schedules. This research aims to design and build a web-based information system that not only provides a user-friendly self-registration interface for patients but also integrates QR Code verification to expedite the check-in process, reduce waiting times, and ease the workload for staff. The system development method used is Rapid Application Development (RAD), which emphasizes a rapid and adaptive development cycle. The developed system offers modern features such as self-service online registration according to available doctor schedules, the creation of a Digital Card with a unique QR Code as proof of appointment, and an innovative "scan-to-queue" system where queue numbers are assigned upon QR Code scanning at the clinic. For administrators, the system includes a protected dashboard to flexibly manage practice schedules, monitor the queue in real-time, and print queue receipts via a thermal printer. System testing was performed using the Black Box Testing method, and the results indicate that all developed features function as designed. With this system, the registration and queuing processes at the Bunda Meifa Foundation Clinic are expected to become more organized, fair, and structured, ultimately enhancing the overall quality of service.
Co-Authors Alfonsius, Eric Andreuw Vandy Lengkong Andrew Lengkong Andria K. Wahyudi Benny Pinontoan Harni Seven Adinata Hizkia Saraun, Samuel Imanuel Iqbal Firdaus Mahardika I. Takaendengan Mans Lumiu Mananohas Marline Paendong Megastin M. Lumembang Mokolanot, Rizky Akbar NELSON NAINGGOLAN Ngangi, Stephano Caesar Wenston Prisilia Lumentah, Sweety Simanjuntak, Agnes Victoria Siska Ayu Widiana Sofiana Paendong, Marline Tenda, Edwin Trianita, Maria