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All Journal Journal of Informatics Management and Information Technology Technology and Informatics Insight Journal
Helmi Bahar Alim
Universitas Putra Bangsa
Computer Science & IT

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Journal : technology and informatics insight journal

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Penerapan Data Mining Untuk Prediksi Jumlah Kunjungan Wisatawan di Kebumen Menggunakan Metode Regresi Linier Sederhana Ikhsanuddin, Rohmatulloh Muhamad; Bahar Alim, Helmi; Shona Chayy Bilqisth, Shona Chayy Bilqisth
Technology and Informatics Insight Journal Vol. 4 No. 1 (2025): TIIJ
Publisher : LP3M Universitas Putra Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32639/6ace8h37

Abstract

Kebumen memiliki potensi wisata alam di pantai selatan Jawa Tengah sebagai alternatif berwisata dengan unggulan destinasi pantai seperti Pantai Menganti, Pantai Karang Bolong, Goa Jatijajar dan Waduk Sempor. Pariwisata memiliki peranan dalam peningkatan pendapatan daerah sehingga perlu didukung pemerintah melalui investasi penunjang pariwisata. Prediksi jumlah wisatawan di Kebumen sebagai faktor yang mempengaruhi investor dalam membuka usaha tentunya diperlukan dalam pengambilan keputusan. Berdasarkan data BPS jumlah kunjungan di Kebumen pada Oktober 2024 sebanyak 257.745 sehingga diharapkan prediksi jumlah kunjungan wisatawan tahun berikutnya dapat menjadikan minat investor di Kebumen. Hasil perhitungan menunjukan bahwa metode regresi linier menghasilkan akurasi sebesar 94,60% dapat membantu pemerintah untuk meyakinkan investor pendukung pariwisata di Kebumen.
Analisis Keamanan Strategi Autentikasi JWT pada Arsitektur API Gateway-IoT: Pendekatan STRIDE Helmi Bahar Alim; Ari Subowo; Miftahul Huda
Technology and Informatics Insight Journal Vol. 5 No. 2 (2026): TIIJ
Publisher : LP3M Universitas Putra Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32639/5bcc4a63

Abstract

Security authentication is a primary challenge in IoT systems relying on resource-constrained devices. JSON Web Token (JWT) is widely adopted as a stateless authentication mechanism, yet the choice of signing algorithm—RS256, ES256, HS256, or Delegated Auth—carries different security implications. This study analyzes four strategies using STRIDE on a Go/Echo-based API Gateway-IoT architecture with ESP8266 NodeMCU V3 devices, per system component. RS256 and ES256 have the smallest blast radius since private keys are per-device, while HS256 is vulnerable to mass exposure if the gateway database is compromised. Delegated Auth offers fastest revocation via gateway blacklist but inherits HS256's shared-secret weaknesses. Empirical data from 1,260 runs show ES256 requires 248.98 ms to sign a JWT (488× slower than HS256 at 0.51 ms), while RS256 is inoperable due to watchdog timer crashes (>8 seconds). These findings guide IoT system designers in selecting JWT strategies suited to their risk profile and device capabilities.
Co-Authors Ari Subowo Miftahul Huda Rohmatulloh Muhamad Ikhsanuddin Shona Chayy Bilqisth, Shona Chayy Bilqisth