Garuda - Garba Rujukan Digital

Enhanced Data Security Using 5x5 Hill Cipher with Modular 53 As Saidah, Muthiah; Saputra, Aggry; Zulkipli, Zulkipli
Jurnal Bangkit Indonesia Vol 13 No 2 (2024): Bulan Oktober 2024
Publisher : LPPM Sekolah Tinggi Teknologi Indonesia Tanjung Pinang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52771/bangkitindonesia.v13i2.323

This research presents an optimized approach to the Hill Cipher encryption and decryption algorithm using a 5x5 matrix and modular 53 arithmetic. The traditional Hill Cipher, a well-known symmetric key algorithm, typically utilizes smaller matrices and modular arithmetic, which may not provide sufficient security for contemporary applications. By expanding the key matrix to a 5x5 structure and adopting a larger modulus of 53, the complexity and security of the cipher are significantly enhanced. The study details the methodology for constructing and implementing the 5x5 key matrix, as well as the processes for encryption and decryption under the modular 53 system. The computational efficiency and security improvements achieved through this optimization are analyzed. Comparative assessments with the conventional Hill Cipher demonstrate that the enhanced approach offers superior resistance against cryptographic attacks while maintaining manageable computational requirements. The results of this research indicate that the proposed optimized Hill Cipher can serve as a robust encryption method suitable for securing sensitive data in various modern applications. This study contributes to the field of cryptography by providing a more secure and efficient variant of the classical Hill Cipher algorithm

Analisis Sentimen Pengguna X Terhadap Kebocoran Data Pribadi Menggunakan Algoritma Naïve Bayes Classifier Stefanni, Stefanni; Zulfachmi, Zulfachmi; Zulkipli, Zulkipli; Saputra, Aggry
Jurnal Bangkit Indonesia Vol 14 No 1 (2025): Bulan Maret 2025
Publisher : LPPM Sekolah Tinggi Teknologi Indonesia Tanjung Pinang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52771/bangkitindonesia.v14i1.434

Personal data breaches in Indonesia have become increasingly prevalent, posing significant risks to both individuals and businesses. With the rapid advancement of information technology, this issue has sparked intense discussions on social media, particularly on the X (Twitter) platform. This study aims to analyze user sentiment on X regarding personal data breaches by classifying opinions into positive, negative, and neutral sentiment categories. Additionally, this research evaluates the performance of the classification model using a confusion matrix to measure accuracy, precision, recall, and f1-score. The method used in this study is the Naïve Bayes Classifier, with 70% training data (433 data points) and 30% testing data (186 data points). The data was obtained through web crawling and preprocessed before performing sentiment classification. The results indicate that negative sentiment dominates with 43.54%, followed by positive sentiment at 28.50%, and neutral sentiment at 27.96%. Model evaluation achieved an accuracy of 98.92%, with negative precision 100%, neutral precision 100%, and positive precision 96.30%. Meanwhile, recall for both positive and negative sentiment reached 100%, while recall for neutral sentiment was 96.23%. The f1-score for negative, neutral, and positive sentiment was 1.0, 0.988, and 0.981, respectively. These findings demonstrate that the Naïve Bayes Classifier performs exceptionally well in classifying sentiment related to personal data breaches. The dominance of negative sentiment in the classification results reflects high public concern over this issue, highlighting the urgent need for enhanced data security measures and privacy protection in Indonesia.

Development of IoT-based Automatic Water Drainage System on Fishing Boat to Improve Operational Efficiency Zulfachmi, Zulfachmi; Zulkipli, Zulkipli; Rahayu, Vita; Saputra, Aggry; As Saidah, Muthiah
Jurnal RESTI (Rekayasa Sistem dan Teknologi Informasi) Vol 9 No 3 (2025): June 2025
Publisher : Ikatan Ahli Informatika Indonesia (IAII)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29207/resti.v9i3.6222

The profession of fishermen requires a reliable system to remove stagnant water from fishing boats, as manual drainage is time-consuming and inefficient. This study proposes an IoT-based automatic water drainage system without using an inverter or ultrasonic sensor, offering a cost-effective alternative. The system utilizes a water level sensor and a DC water pump, controlled via a smartphone application. The research model used is the Research and Development (R&D) model, through several stages, namely potential and problems, initial data needs, prototype creation, prototype validation, prototype revision, validation, implementation. Problems occur at the prototype stage, problems that must be revised include aspects of wiring, Power Suitability, Water Level Sensor Test, and the configuration of the relay used. The IOT-based automatic water drainage system can function based on the results of white-box testing including Hardware Implementation, Software Implementation, Implementation of Application Usage, and Automatic Drainage System Testing. This is indicated by the results of the Liquid Water Level Sensor Functionality test, DC Water Pump Functionality Test, Solar Panel and Battery Functionality Test, and IOT Functionality Test. IOT-based automatic water discharge systems on fishing boats are more efficient and cost-effective in the long run, although diesel engines offer more reliability under adverse weather conditions or in places with limited access to sunlight.

Aplikasi Monitoring Work Order Request Berbasis Client Server di PT. Sanden Electronics Indonesia Zulkipli, Zulkipli; Felany, Felany
Jurnal Bangkit Indonesia Vol 12 No 1 (2023): Bulan Maret 2023
Publisher : LPPM Sekolah Tinggi Teknologi Indonesia Tanjung Pinang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52771/bangkitindonesia.v12i1.221

In the last decade, the interest of researchers to develop technology has increased rapidly. In an industrial context, the use of technology can help increase a company's business potential. In making a list of raw materials at PT. Sanden Electronics Indonesia, the logistics department has not used an application specifically to handle monitoring of raw material picking and to connect between officers/makers of raw material lists and supervisors. The manual data collection process based on the case study was considered too slow. Based on these problems, the researcher took the initiative to develop a product in the form of a client server-based work request monitoring application and to conduct application testing at PT. Sanden Electronics Indonesia. This research was conducted using the Research & Development (R&D) method and the development of the software used in developing this application used the Spiral Model. Based on the results of application testing that has been carried out in the form of testing the input login form, work order request, tube master list testing, tube stock code testing, as well as testing the monitoring status input form, the product is a client server-based monitoring application developed using the Java programming language using Netbeans IDE, can be implemented well in PT. Sanden Electronics Indonesia.

Peningkatan keterampilan digital melalui aplikasi perkantoran dalam mewujudkan kemandirian ekonomi Saidah, Muthiah As; Huda, Dwi Nurul; Zulkipli; Saputra, Aggry; Zufachmi
Jurnal Inovasi Hasil Pengabdian Masyarakat (JIPEMAS) Vol 8 No 3 (2025)
Publisher : University of Islam Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33474/jipemas.v8i3.24133

Pelatihan keterampilan digital menjadi upaya strategis untuk meningkatkan kapasitas remaja dalam menghadapi tantangan sosial ekonomi. Program ini bertujuan membekali peserta Forum Remaja PKBI Kepulauan Riau dengan keterampilan administrasi perkantoran berbasis aplikasi digital, khususnya Microsoft Office dan Canva. Metode pelaksanaan mencakup sosialisasi, pelatihan, pendampingan, penerapan teknologi, serta evaluasi melalui pre-test, post-test, dan kuesioner kepuasan. Hasil pre-test dan post-test menunjukkan peningkatan signifikan pada seluruh indikator capaian. Peningkatan keterampilan tercatat pada pelatihan dasar-dasar komputer dari skor sebelumnya 39 menjadi 92, penggunaan aplikasi Microsoft Word dari sebelumnya 32 menjadi 91, penggunaan Microsoft Excel dan Word sebelumnya 24 menjadi 90, serta desain CV dan surat lamaran profesional dengan Canva sebelumnya 38 menjadi 93. Nilai akhir rata-rata untuk seluruh materi melampaui target 90, dengan peningkatan tertinggi pada materi mail merge di Microsoft Word. Selain itu, kepuasan peserta terhadap materi, metode, dan fasilitas pelatihan mencapai 92%. Temuan ini menegaskan efektivitas pelatihan aplikasi perkantoran dalam mendorong kemandirian ekonomi remaja. Program diharapkan berlanjut melalui pendampingan berkesinambungan dan keterlibatan aktif mitra, sehingga peserta mampu menjadi agen pengetahuan di komunitasnya.

Pembangunan Aplikasi E-Learning Berbasis Android sebagai Media Pembelajaran di SMA Negeri 1 Bintan Menggunakan ADDIE Model Zulfachmi, Zulfachmi; Zulkipli, Zulkipli; Rahmad, Abdul; Derry, Derry
Prosiding Vol 6 (2024): SNISTEK
Publisher : LPPM Universitas Putera Batam

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Education in the digital era has undergone significant transformation along with the development of information and communication technology that has presented various solutions to improve the effectiveness and efficiency of the learning process. The learning process at SMA Negeri 1 Bintan is still dominated by conventional methods that have limitations in flexibility. This study aims to develop an Android-based e-learning application as a solution to overcome these limitations. By using the ADDIE (Analysis, Design, Development, Implementation, and Evaluation) development model, this study identifies the needs of students and teachers, designs the interface and learning materials, develops the application, and implements it at SMA Negeri 1 Bintan. The evaluation was carried out through black box testing using all pair testing, equivalence partitioning, and use case testing techniques. The test results show that this e-learning application has good and stable performance in various usage scenarios. This application is suitable for use as a learning medium at SMA Negeri 1 Bintan, meets the needs of digital learning, and supports an effective learning process both online and offline.

Alasan Peneliti Menggunakan Analisis Statistik Wilcoxon (Non Parametrik) Zulkipli, Zulkipli; Zulfachmi, Zulfachmi; Rahmad, Abdul
Prosiding Vol 6 (2024): SNISTEK
Publisher : LPPM Universitas Putera Batam

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Research Models continue to develop or be modified by researchers. Over time, they also develop alternative models so that research can be carried out efficiently. Based on this problem, an initiation emerged to develop a simpler method, namely non-parametric statistics. There is one method that is quite often used by researchers, namely the Wilcoxon test. This study aims to explore the reasons researchers use the Wilcoxon Test (non-parametric). To provide a convincing picture of the research, a literature review was conducted by selecting articles from recently published peer-reviewed journals. Non-parametric statistics are statistical formulas that are used when the sample taken is likely to be relatively small. In addition, this method is also used to analyze data from test results, questionnaires, or other data collection instruments designed to ensure ideas and research results, regardless of whether the data is normal or not.

Sistem Informasi Simulasi Dan Penilaian Kredit Skoring Berbasis Website Pada PT. Bank Perkreditan Rakyat Dana Nusantara Kota Tanjungpinang Abdulrahmad, Abdulrahmad; Zulfachmi, Zulfachmi; Zulkipli, Zulkipli; Candlekie, Candlekie
Prosiding Vol 6 (2024): SNISTEK
Publisher : LPPM Universitas Putera Batam

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This research is motivated by the management of credit application data management and management of prospective debtor eligibility data and credit scoring data at PT. Bank Perkreditan Rakyat Dana Nusantara, Tanjungpinang City, which does not yet have a computerized system that is integrated between marketing, the assessment section and the team leader. Where each credit application data for each prospective debtor and credit scoring data and verification results are processed and summarized in Microsoft Excel and each application document is still summarized manually. With the conditions and descriptions mentioned above, it is very possible that the data collection process will experience errors and mistakes and even documents can be scattered or lost. So that the marketing and assessment sections concerned have difficulty taking action because the documents have been scattered or lost. Currently, credit application data management is carried out manually, where the process of submitting credit application documents is carried out directly, then the management of prospective debtor data, credit scoring is summarized into Microsoft Excel. As a result, marketing assessments become slower and other work is disrupted. So the author took the initiative to create a system that is able to adequately manage all credit application data management processes using the Waterfall method in designing software that will be used by all users of the designed system. To make it easier and accessible anytime and anywhere, the system is designed based on a website, so that notifications regarding the continuation of the credit application are directly entered and displayed automatically in the system, especially for each prospective debtor who has made a credit application, whether the application is approved or rejected. In designing the system, the author uses PHP (Programing Hypertext Prepocessor), framework (LARAVEL) as a system design media.

Perancangan Sistem Informasi Absensi berbasis Web pada Toko Jaya Plastik Zulfachmi, Zulfachmi; Zulkipli, Zulkipli; Rahmad, Abdul
Prosiding Vol 6 (2024): SNISTEK
Publisher : LPPM Universitas Putera Batam

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An activity of collecting data that is part of the reporting activity, contains attendance data that is collected and managed to determine the frequency of attendance at an activity that can be used whenever needed, interpreted as absence. It was identified that there was an ineffectiveness in the process of collecting employee attendance lists at Toko Jaya Plastik. Then, this also raises another problem, namely inaccurate information will affect the calculation of employee salaries. Thus, a web-based attendance information system is needed so that attendance activities can be accessed by employees using smartphones. Based on these problems, the researcher took the initiative to design and implement a web-based attendance system. The programs used to design the attendance system are Visual Studio Code, MySQL, XAMPP, and Google Chrome. The researcher conducted observations and interviews with Toko Jaya Plastik, to obtain information related to the attendance application system. Then, this web-based attendance information system was developed and implemented with the PHP, HTML, Java Script, CSS programming languages and using the MySQL database. Based on the results of the research and system design, it can be concluded that, after testing, the designed web-based attendance system can be implemented properly. The suggestion for further research is the development of the QR Code scan feature so that it can be done for a lifetime.

Hubungan antara Kemampuan Matematika dengan Keterampilan Pemrograman Zulkipli, Zulkipli
Jurnal Bangkit Indonesia Vol 12 No 2 (2023): Bulan Oktober 2023
Publisher : LPPM Sekolah Tinggi Teknologi Indonesia Tanjung Pinang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52771/bangkitindonesia.v12i2.251

The development of computers lasted for five generations, starting from 1940 until now. Along with rapid technological developments, software innovations in certain fields must be carried out to facilitate data processing. There is a phenomenon where some Informatics Students question "Why do they as prospective programmers still have to study Mathematics Subjects". In fact, without them realizing, one of the things they need to become a good programmer is being able to think logically, by learning how to think mathematically. The problems that have been explained give rise to the idea for researchers to see the relationship (correlation) between Mathematics Ability and Programming Skills. This research is a type of quantitative research with a descriptive approach to find out how close the relationship is between Mathematics Ability and Programming Skills. The sample taken was 60 students from the Informatics Engineering and Information Systems Study Program from one of the universities in the Riau Islands who were selected using the Random Sampling technique. Data was collected using a Likert scale questionnaire, containing 19 statements regarding mathematical abilities and 10 statements regarding programming skills. The data obtained was then analyzed using the Pearson product moment correlation analysis model. Based on the research results, it was stated that there is a close relationship between Mathematics Ability and Programming Skills

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