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Onno W. Purbo
IBI Darmajaya
Computer Science & IT

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Internet-offline solution: detail description and benchmarking Onno W. Purbo
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 18, No 4: August 2020
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v18i4.13309

Abstract

In this paper, for the first time, the detail of the Internet-Offline solution for rural/village schools is described, and its benchmarking is reported. For providing offline knowledge access, four (4) different systems have examined. An affordable, the RaspberryPi3 server found to be able to provide web as well as file sharing service for up to 20 clients at 100Mbps throughput. UnixBench shows that the RaspberryPi3 about 25% performance of a four-core i5 system. Using consumer grade power banks at 10000-20000mAh, the RaspberryPi3 server may provide a 6+ hour operation. With reliable electrical power, a mini PC provides a more reliable alternative at an order of magnitude increase in cost. For more than 100 users, one may use i5 or higher engines to keep the price-performance ratio low. Besides, in the Internet-Offline system, teachers no longer have to worry about bullies, hoax, or pornographic contents.
KawalPilpres2019: a highly secured real count voting escort architecture Onno W. Purbo; Gildas Deograt; Rolof Satriyanto; Abraham Ferdinand; Pamadi Gesang; Rendra Kesuma; Kalpin Erlangga Silaen
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 17, No 6: December 2019
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v17i6.13241

Abstract

This paper reports on the highly secured information security architecture used by the KawalPilpres 2019 to escort Voting Commission (KPU) data entry. For the first time, a voting escort implements ISO 27001 compliance information security. As of 15 May 2019, 9550 volunteers reported 482,602 voting data of 336,445 voting booths, both in the country and overseas, through the micro-apps KawalPilpres2019. PeSanKita is used as a secure communication channel and to run micro-apps KawalPilpres2019. Double Ratchet Algorithm secures the channel. Different from other voting escort initiatives, KawalPilpres2019 uses (1) primarily C1 Plano photo, (2) no upload limit per voting booth, (3) no web upload, rather via PeSanKita Secured Platform. Behind the scenes, the verification process is done twice before displaying data to the publicly accessible monitoring web. The result is a robust voting escort system, difficult to hack and guarantee data integrity. Guaranteed security, availability, and data integrity are the main requirements for future eVoting systems.
Co-Authors Abraham Ferdinand Gildas Deograt Kalpin Erlangga Silaen Pamadi Gesang Rendra Kesuma Rolof Satriyanto