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All Journal Jupiter Sinkron : Jurnal dan Penelitian Teknik Informatika Jurnal Nasional Pendidikan Teknik Informatika (JANAPATI) Informatik : Jurnal Ilmu Komputer Sriwijaya Journal of Informatics and Applications Jurnal Pengabdian Kolaborasi dan Inovasi IPTEKS
Al Farissi
Universitas Sriwijaya
Agriculture, Biological Sciences & Forestry Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Library & Information Science Social Sciences

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Sistem Pengamanan Data Menggunakan Kriptografi AES dan Blockchain Berbasis Android Dhiya Calista; Al Farissi; Mastura Diana Marieska
JUPITER (Jurnal Penelitian Ilmu dan Teknologi Komputer) Vol 13 No 2 (2021): JUPITER Edisi Oktober 2021
Publisher : Teknik Komputer Politeknik Negeri Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/3927.jupiter.2021.10

Abstract

Data or information security is a very important thing for internet users to pay attention to now, so that the data or information owned is not attacked by irresponsible parties. So, in this research, an implementation of a combination of Blockchain and AES cryptography will be carried out in order to avoid active and passive attacks by attackers. Blockchain method can detect data changes from attackers quickly and easily. However, Blockchain method can still be attacked passively, therefore AES method is combined with Blockchain as a complement that is used to encrypt data from plaintext to ciphertext so that existing data or information can be avoided from active or passive attacks. In this research, the software development method is using Rational Unified Process (RUP) method and the tests carried out are Blockchain resistance to modification attacks testing and Avalanche Effect testing on AES method. Keywords— Cryptography, Blockchain, AES, RUP, Avalanche Effect
Perancangan Sistem Pengatur Electrical Conductivity (EC) Air Menggunakan Kendali Logika Fuzzy Ahmad Rifai; Sarmayanta Sembiring; Al Farissi Al Farissi; Donny Giovanna Karo Karo
Informatik : Jurnal Ilmu Komputer Vol 16, No 1 (2020): April 2020
Publisher : Fakultas Ilmu Komputer

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1296.09 KB) | DOI: 10.52958/iftk.v16i1.1683

Abstract

Telah dirancang sebuah sistem pengatur electrical Conductivity (EC) air dengan menggunakan kendali logika fuzzy. Sistem pengatur ini berfungsi untuk memutuskan banyaknya volume air dengan EC rendah/tinggi yang harus ditambahkan untuk mencapai EC air pada penampungan sesuai dengan target yang di inputkan. Penambahan air dengan EC rendah/tinggi dilakukan dengan mengalirkannya menggunakan pompa DC dan diditeksi menggunakan water flow sensor dengan penutup aliran menggunakan selonoid valve untuk memastikan volume air yang dialirkan telah sesuai dengan hasil sistem pengatur. Input sistem ini terdiri dari nilai EC air penambah (air dengan EC rendah dan air dengan EC tinggi), target EC air pada penampungan yang diinputkan dengan keypad 4x4, nilai EC air pada penampungan yang diditeksi sensor Konduktivitas, dan volume air pada penampungan yang diditeksi dengan menggunakan sensor ultrasonik. Hasil pengujian menunjukkan sistem telah dapat berjalan dengan baik, dimana sistem dapat menditeksi volume air dengan menggunakan sensor ultrasonik dengan error rata-rata penditeksian jarak sebesar 1,92%, penditeksi EC dengan menggunakan sensor Konduktivitas telah dapat menditeksi EC dengan error rata-rata sebesar 1,91%, sistem pengatur volume penambah telah berfungsi dengan baik dengan error rata-rata sebesar 1,87% dan kendali logika fuzzy telah dapat mengambil keputusan banyaknya volume penambah yang harus diberikan untuk mencapai EC target pada penampungan dengan error rata-rata terhadap pengukuran EC setelah hasil pencampuran sebesar 4,17%.
Securing Text File on Audio Files using Least Significant Bit (LSB) and Blowfish Ahmad Rizky Fauzan; Al Farissi; Muhammad Naufal Rachmatullah
Sriwijaya Journal of Informatics and Applications Vol 3, No 2 (2022)
Publisher : Fakultas Ilmu Komputer Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/sjia.v3i2.42

Abstract

Along with the development of technology, communication can be done in various ways, one of which is digital messages. But often the messages sent do not reach their destination and are obtained by irresponsible parties. This happens because of the lack of security in the file. For this reason, security is needed so that messages cannot be stolen or seen by other parties. There are various ways to secure messages, including Steganography and Cryptography techniques. This study uses a combination of the Least Significant Bit method and the Blowfish algorithm to secure secret messages in audio files. This research will measure encryption and decryption time, analysis of message file size changes after encryption and decryption, and PSNR value of audio files. The result of encryption using blowfish is a change in the size of the message file caused by the size of the message file is less than the block cipher size, so additional bytes are given so that the message size matches the block cipher size. The speed of the encryption and decryption process using the blowfish algorithm results in an average time for encryption of 547.98ms while the average time for decryption is 538.19ms. The longest time for the encryption process is 557.30ms and the fastest is 534.50ms, while the longest time for the decryption process is 548.74ms and the fastest is 531.46ms. Hiding messages in audio files using LSB produces PSNR values above 30dB.
Modification of Non-local Mean Algorithm Using Parallel Calculation for Image Noise Reduction Al Farissi; Wondo Wondo
Jurnal Nasional Pendidikan Teknik Informatika : JANAPATI Vol. 12 No. 2 (2023)
Publisher : Prodi Pendidikan Teknik Informatika Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/janapati.v12i2.58996

Abstract

Noise in digital image processing is a noise that occurs at pixel values due to random colour intensity. Several types of noise models include Gaussian noise, speckle noise, impulse noise, and Poisson noise. Before processing image data, a noise reduction process is required. One of the noise reduction algorithms used for gaussian noise models is Non-local Mean. This algorithm performs calculations sequentially on each pixel in the search block. Due to a large number of pixels and search block area in the image, the noise reduction process using the Non-local Mean algorithm is very slow. This study proposes the concept of parallel calculations for the Non-local Mean algorithm. This concept divides the search block into three parts and performs calculations on each part simultaneously. The experimental results show that the Non-local Mean algorithm with parallel calculations can reduce noise up to 30% faster if the noise standard deviation is above 30.
Securing Messages Using AES Algorithm and Blockchain Technology on Mobile Devices Al Farissi; Arya Pradata; Kanda Miraswan
Sinkron : jurnal dan penelitian teknik informatika Vol. 8 No. 2 (2023): Research Article, Volume 8 Issue 2 April, 2023
Publisher : Politeknik Ganesha Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33395/sinkron.v8i2.12381

Abstract

In recent years, there has been a rapid increase in the use of mobile devices and messaging applications for communication, leading to a growing concern about the security of text messages exchanged through these platforms. This study proposes a novel method that uses the AES algorithm and Blockchain to secure text messages in messaging applications on mobile devices. The AES algorithm is selected due to its faster encryption and decryption processes, which are superior to asymmetric cryptography algorithms. On the other hand, Blockchain is chosen for its inherent security properties that only allow data addition and cannot be altered. This study aims to achieve both speed and security to prevent cybercrime in text messages. The Avalanche Effect calculation and Processing Time measurement are used as the analysis methods to evaluate the proposed approach. The results show that the computation time of the message delivery process using Blockchain and AES algorithm has an average total process time of 33.59 milliseconds. Additionally, the testing results of the Avalanche Effect value show that the AES algorithm has a value of 50% for character lengths up to 16 characters and below 50% for character lengths greater than 16 characters. Based on these testing results, the proposed combination of the AES algorithm and Blockchain is an effective method for securing text messages in messaging applications. This method can offer a secure and efficient way of exchanging text messages on mobile devices and can adopt as a standard approach for messaging applications.
PELATIHAN PENINGKATAN PENGUASAAN TEKNOLOGI INFORMASI DIGITAL GUNA MASYAKARAT MARIANA ILIR Ali Ibrahim; Ermatita Ermatita; Abdiansah Abdiansah; Ahmad Fali Oklilas; Al Farissi; Rizka Dhini Kurnia; Mira Afrina
Jurnal Pengabdian Kolaborasi dan Inovasi IPTEKS Vol. 2 No. 1 (2024): Februari
Publisher : CV. Alina

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59407/jpki2.v2i1.237

Abstract

Mariana Ilir merupakan salah satu kelurahan yang ada di kecamatan Banyuasin I yang mempunyai potensi yang cukup besar untuk dikembangkan, namun selama ini penggunaan teknologi informasi dalam penyebaran informasi masih belum dapat dimanfaatkan secara optimal dikalangan pemerintahan khususnya di pedesaan, hal ini disebabkan karena terbatasnya sarana dan prasarana serta sumber daya manusia yang memiliki kemampuan dan keahlian dibidang ilmu komputer dan teknologi informasi. Pada kegiatan ini akan dilaksanakan sesuai dengan kesepakatan antara tim pelaksana dengan kelurahan mariana ilir. Khalayak yang akan ikut dalam kegiatan ini berjumlah 20 orang. Kegiatan PkM akan dilaksanakan secara luring. Hasil yang di harapkan dari kegiatan Pk adalah bertambahnya keterampilan apparat kelurahan dan masyarakat tentang IT. Selaian itu PkM ini memiliki luaran seperti Lapoaran PkM dan Publikasi karya ilmiah pada jurnal nasional. Kegiatan PkM Peningkatan Keterampilan Teknologi Informasi Digital Untuk Masyakarat dan Aparat Kelurahan Mariana Ilir Kecamatan Banyuasin Ilir, Kabuaten Banyuasin Sumatra Selatan terlaksana sesuai dengan rencana yang sudah disepakati oleh tim pelaksana dengan tim pelaksana dari kelurahan. Peserta sangat antusias dengan mengikuti kegiatan PkM, Harapan peserta untuk tetap diadakan kegiatan Kembali tahun selanjutnya.
Co-Authors Abdiansah, Abdiansah Ahmad Fali Oklilas Ahmad Rifai Ahmad Rizky Fauzan Ali Ibrahim Arya Pradata Dhiya Calista Donny Giovanna Karo Karo Ermatita - Kanda Miraswan Mastura Diana Marieska Mira Afrina Muhammad Naufal Rachmatullah Rizka Dhini Kurnia Sarmayanta Sembiring Wondo Wondo