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All Journal Jurnal Edukasi dan Penelitian Informatika (JEPIN) Journal of Information Systems Engineering and Business Intelligence InfoTekJar (Jurnal Nasional Informatika dan Teknologi Jaringan) Sinkron : Jurnal dan Penelitian Teknik Informatika International Journal of Artificial Intelligence Research Language Literacy: Journal of Linguistics, Literature, and Language Teaching IJISTECH (International Journal Of Information System & Technology) KOMIK (Konferensi Nasional Teknologi Informasi dan Komputer) JURNAL TEKNOLOGI DAN ILMU KOMPUTER PRIMA (JUTIKOMP) Jurnal Mantik TRIDARMA: Pengabdian Kepada Masyarakat (PkM) REMIK : Riset dan E-Jurnal Manajemen Informatika Komputer Journal of Computer Networks, Architecture and High Performance Computing IJISTECH Dedikasi Sains dan Teknologi (DST) Brilliance: Research of Artificial Intelligence Jurnal Minfo Polgan (JMP) Prioritas : Jurnal Pengabdian Kepada Masyarakat Data Sciences Indonesia (DSI) International Journal of Multidisciplinary Sciences and Arts Deli Sains Informatika

Muhammad Khoiruddin Harahap

Politeknik Ganesha Medan, Indonesia

Author-ID : 607333

Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Dentistry Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Neuroscience Nursing Physics Public Health Social Sciences Transportation Veterinary Other

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ANALISIS PERBANDINGAN ALGORITMA KRIPTOGRAFI KLASIK VIGENERE CIPHER DAN ONE TIME PAD Harahap, Muhammad Khoiruddin
InfoTekJar (Jurnal Nasional Informatika dan Teknologi Jaringan) Vol 1, No 1 (2016): InfoTekJar
Publisher : InfoTekJar (Jurnal Nasional Informatika dan Teknologi Jaringan)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (359.936 KB)

Kriptografi memiliki peranan yang besar dalam dunia keamanan data. Dengan adanya ilmu yang mempelajari bagaimana menjaga data agar tetap terahasia, diharapkan dapat menciptakan rasa aman bagi siapapun yang ingin menyimpan dan merahasiakan data mereka. Ada beberapa algoritma kriptografi yang tergolong kedalam kriptografi klasik, diantaranya adalah Vigenere Cipher dan One Time Pad. Secara umum proses enkripsi dan dekripsi dari kedua metode ini terlihat sama, namun tetap saja ada perbedaannya. Perbedaan kedua algoritma ini terletak pada kunci yang digunakan, algoritma Vigenere Cipher menggunakan kunci yang sama dan selalu berulang, sedangkan algoritma One Time Pad menggunakan kunci yang selalu berbeda terhadap huruf yang akan dienkripsinya.

IMPLEMENTASI ALGORITMA KRIPTOGRAFI ONE TIME PAD (OTP) DENGAN DYNAMIC KEY LINEAR CONGRUENTIAL GENERATOR (LCG) Clawdia, Jhessica; Khairina, Nurul; Harahap, Muhammad Khoiruddin
KOMIK (Konferensi Nasional Teknologi Informasi dan Komputer) Vol 1, No 1 (2017): Intelligence of Cognitive Think and Ability in Virtual Reality
Publisher : STMIK Budi Darma

Algorithms have an important role in the era of digitalization, by understanding the concept of algorithms can keep information security protected from third parties. Securing a password can increase the security of the data so that the sender can be more comfortable when sending messages to others. This paper aims to make Keys on OTP dynamically generated using random number generator Linear Congruential Generator (LCG) Method. This discussion provides the benefit of an extension of insight that key modifications to OTP can be made and can be dynamically created. Based on the research done, with the random number generator method Linear congruential generator then the key becomes Unique. So there is no repetition of the same key. This depends on the range of random numbers.

Menjaga Kerahasiaan Data dengan Steganografi Kombinasi LSB-2 dengan LSB-3 Dan Chess Board Pattern Khairina, Nurul; Harahap, Muhammad Khoiruddin
Sinkron : Jurnal dan Penelitian Teknik Informatika Vol 3 No 1 (2018): SinkrOn Volume 3 Nomor 1, Periode Oktober 2018
Publisher : Politeknik Ganesha Medan

Steganografi merupakan bidang keamanan dengan pola kerja yang menyisipkan data ke dalam beberapa media digital, proses penyisipan ini bertujuan untuk menyembunyikan keberadaan data tersebut dari pihak yang tidak bertanggung jawab. Penelitian ini, menjabarkan kombinasi algoritma Least Significant Bit yang sudah dimodifikasi yaitu Algoritma Least Significant Bit â€“ 2 dan algoritma Least Significant Bit â€“ 3. Pemaparan yang dilakukan adalah dengan mengkombinasikan kedua metode tersebut yang kemudian disisipkan ke dalam citra, dalam hal ini menggunakan format JPG, bit pesan akan disisipkan ke dalam salah satu piksel warna Red, Green dan Blue. Pola penyisipan yang dilakukan dengan Chess Board Pattern. Tingkat kerusakan citra diukur dengan metode Mean Square Error untuk melihat tingkat kerusakan citra apakah citra tersebut rusak atau tidak dengan batas ambang tertentu. Hasil penelitian ini memperoleh nilai MSE sebesar 1,2 %, dimana tidak terlihat adanya perubahan nilai warna yang signifikan dari citra hasil penyisipan terhadap citra asli.

Kombinasi Kriptografi RSA dengan Linear Congruential Generator Harahap, Muhammad Khoiruddin; Rina, Rina
Sinkron : Jurnal dan Penelitian Teknik Informatika Vol 3 No 1 (2018): SinkrOn Volume 3 Nomor 1, Periode Oktober 2018
Publisher : Politeknik Ganesha Medan

Kriptografi menjadi sebuah teknik keamanan yang terus berkembang dan tak pernah selesai dalam pembahasannya. Keamanan terhadap data juga selalu menjadi perhatian yang sangat penting demi untuk menjaga kerahasiaan dan keamanan dari data tersebut. Dalam pembahasan ini bertujuan untuk menggabungkan dua buah algoritma yaitu pembangkit bilangan acak menggunakan metode Linear Congruential Generator untuk membuat tabel baru index bilangan ASCII yang kemudian dilanjutkan dengan Enkripsi / dekripsi menggunakan RSA. Melalui pembahasan tersebut didapatkanlah keamanan data menjadi 2 layer, yaitu layer pertama berdasarkan pengacakan code ASCII menjadi tabel baru dan Layer Kedua Enkripsi dan Dekripsi menggunakan metode RSA

Pencarian Jalur Terpendek dengan Algoritma Dijkstra Harahap, Muhammad Khoiruddin; Khairina, Nurul
Sinkron : Jurnal dan Penelitian Teknik Informatika Vol 2 No 2 (2017): SinkrOn Volume 2 Nomor 2 Oktober 2017
Publisher : Politeknik Ganesha Medan

Abstrak â€” Persoalan dalam menemukan jalur terpendek seiring dengan penghematan waktu yang tersingkat. Hal ini menjadi penting dalam kedinamisan masyarakat perkotaan. Jumlah rute yang ditempuh juga menjadi persoalan tersendiri untuk mencapai tempat tujuannya. Kita akan menentukan titik-titik manakah yang harus dilalui sehingga mendapatkan tempat tujuan dengan jarak terpendek dan penggunaan waktu yang tersingkat dengan menggunakan algoritma Dijkstra. Pencarian lintasan terpendek merupakan persoalan optimasi. Nilai pada sisi graph bisa dinyatakan sebagai jarak antar kota. Lintasan terpendek bisa diartikan sebagai proses minimalisasi bobot pada lintasan. Untuk mengatasi permasalahan itu maka diperlukan adanya suatu simulasi yang dapat membantu menentukan jalur terpendek. Algoritma Dijkstra bisa juga dikatakan sebagai algoritma Greedy yang pada pembahasan ini mampu memudahkan kita mencari jalur rute terpendek dan menjadi lebih efekfif. Kata Kunci â€” Dijkstra, Greedy, Jalur terpendek, Optimasi waktu.

The Comparison of Methods for Generating Prime Numbers between The Sieve of Eratosthenes, Atkins, and Sundaram Harahap, Muhammad Khoiruddin; Khairina, Nurul
Sinkron : Jurnal dan Penelitian Teknik Informatika Vol 3 No 2 (2019): SinkrOn Volume 3 Number 2, April 2019
Publisher : Politeknik Ganesha Medan

Prime numbers are unique numbers. Prime numbers are numbers that only have a dividing factor consisting of numbers 1 and the number itself. The prime numbers from 1 to n that are relatively small can be generated manually, but a prime number generator algorithm is needed to generate prime numbers on a large scale. This study compares three prime number generator algorithms, namely: The Sieve of Eratosthenes, The Sieve of Atkins, and The Sieve of Sundaram. These three sieve algorithms have their own differences in generating prime numbers. The Sieve of Eratosthenes uses a simpler method by crossing multiples of prime numbers and marking them as non-prime numbers. The Sieve of Atkins uses several requirements for quadratic equations and modulus in determining prime numbers. The Sieve of Sundaram has an algorithm similar to The Sieve of Atkins, but there are requirements for linear equations to determine prime numbers. This study aims to see a comparison of these three algorithms in terms of accuracy and speed in generating prime numbers on a large scale. The results of this study indicate The Sieve of Eratosthenes, Atkins and Sundaram algorithms can generate large numbers of prime numbers with good accuracy, this was tested by the Fermat Primality Test Algorithm. The conclusion that can be drawn from this study, The Sieve of Eratosthenes have a faster time to generate prime numbers on a large scale than the other two algorithms.

Steganography Citra dengan Metode Least Significant Bit Random Placement Harahap, Muhammad Khoiruddin; Khairina, Nurul
JEPIN (Jurnal Edukasi dan Penelitian Informatika) Vol 6, No 2 (2020): Volume 6 No 2
Publisher : Program Studi Informatika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jp.v6i2.40620

Steganografi memiliki keunikan tersendiri dalam menyembunyikan keberadaan sebuah pesan rahasia. Steganografi identik dengan penggunaan media tertentu dalam menjaga kerahasiaan pesan, tetap menjadi favorit para peneliti untuk tetap mengembangkan penelitian di bidang ilmu ini. Metode Least Significant Bit merupakan metode steganografi sederhana, serta memiliki perubahan relatif kecil dan tidak dapat dlihat secara visual manusia. Metode Linear Congruential Generator merupakan metode pembangkit bilangan acak. Metode ini digunakan untuk memilih koordinat piksel P(x,y) secara acak, kemudian piksel acak yang terpilih akan digunakan sebagai acuan dasar dalam penyisipan pesan. Penelitian ini mengkombinasikan metode Least Significant Bit dengan Linear Congruential Generator yang disertai dengan penggunaan operator Boolean XOR yang berfungsi untuk memproses pesan biner dengan piksel citra. Hasil operasi XOR berupa bilangan biner yang akan di replace pada citra asli dan kemudian akan menghasilkan stego image. Dari proses penelitian serta pengujian embedded dan extraction, dapat diambil kesimpulan bahwa penelitian ini menghasilkan keterbaharuan sederhana dan unik. Hasil penelitian menunjukkan bahwa sebuah piksel dapat disisipkan pesan lebih dari satu kali. Penyisipan juga dapat dilakukan pada beberapa piksel acak maupun pada delapan piksel tetangga yang berhubungan dengan piksel acak P(x,y). Di samping itu perubahan stego image terhadap gambar original juga terlihat sangat minim dan tidak dapat dilihat secara kasat mata. Kombinasi beberapa metode pada penelitian ini juga tetap mampu menjaga kualitas citra yang dibuktikan dengan nilai MSE yang mencapai 0.04 pada penyisipan 100 karakter dengan resolusi gambar 1024 x 1024 sehingga tidak menimbulkan kecurigaan pihak lain terhadap adanya penyembunyian pesan rahasia pada sebuah citra.

E-Commerce Penjualan Obat Herbal pada Toko PO.Propolis dan Herbal Center Medan Pania, Sadri; Harahap, Muhammad Khoiruddin
REMIK: Riset dan E-Jurnal Manajemen Informatika Komputer Vol. 4 No. 2 (2020): Remik Volume 4 Nomor 2 April 2020
Publisher : Politeknik Ganesha Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33395/remik.v4i2.10575

Abstractâ€” Technology and information currently growing and advancing need to be balanced according to the needs of the current era, because the more complex the work carried out, it cannot be denied at any institution or other institution that requires technology that can help and improve the work. Likewise, the marketing of Herbal Products at PO.Propolis Herbal Center Medan, the current information system is still functioning semi-computerized. This research discusses and makes information systems that can help in sales at PO.Propolis Stores & Medan Herbal Centers which have been using manuals. And facilitate the work of employees in managing data. Complete marketing results data quickly and relatively quickly. The information system is designed using the PHP programming language with a MySQL database. Tests carried out using the Black Box test and White Box test. The results of the research have made E-Commerce which can help the information system that runs better

Analysis of Learning Algorithms for Multilayer Neural Networks Muhammad Khoiruddin Harahap; Eko Pramono; Hilda Yulia Novita; Maharina Maharina; Dimas Sasongko; Candra Zonyfar
International Journal of Artificial Intelligence Research Vol 6, No 1 (2022): June 2022
Publisher : STMIK Dharma Wacana

The modern stage of development of science and technology is characterized by a rapid increase in the complexity of the created technical systems. The management of such systems requires the development of new management methods, since the modification and improvement of traditional management techniques does not always ensure the fulfillment of stringent requirements for management quality indicators. Classical control methods are mainly based on the theory of linear systems, while most real objects are non-linear. The problem of the synthesis of control systems under conditions of uncertainty is currently one of the central problems in the modern theory of automatic control. The complexity of the control object itself, structural, parametric and information uncertainties in the description of the control object, and the complexity of control problems, the multi criteria of optimization problems, the lack of possible analytical solutions, the need to take into account all the properties of disturbances, etc. The solution to this problem requires a search for alternative approaches to the design of control systems, one of which involves the introduction of neural network systems. Neural network control systems are a high-tech direction of control theory and belong to the class of nonlinear dynamic systems. High performance due to parallelization of input information in combination with the ability to train neural networks makes this technology very attractive for creating control devices in automatic systems. Neural networks can be used to build regulating and switching devices, reference, adaptive, nominal and inverse-dynamic models of objects, on the basis of which objects are studied, analysis of the influence of disturbances acting on an object, determination of the optimal control law, search or calculating the optimal program for changing the impact when changing the values of the parameters of the object and the characteristics of the input data. In addition, neural networks can be used to identify objects, predict the state of objects, recognize, cluster, classify, analyze a large amount of data arriving at high speed from a large number of devices and sensors, and the like. The ability to learn according to a given principle of functioning allows creating automated control systems that are optimal in terms of speed, energy consumption, etc. Naturally, in this case, it is possible to implement several principles of functioning and the transition from one to another. They are a universal tool for modeling multidimensional nonlinear objects and finding solutions to ill-posed problems.

The Authenticity of Image using Hash MD5 and Steganography Least Significant Bit Nurul Khairina; Muhammad Khoiruddin Harahap; Juanda Hakim Lubis
IJISTECH (International Journal of Information System and Technology) Vol 2, No 1 (2018): November
Publisher : Sekolah Tinggi Ilmu Komputer (STIKOM) Tunas Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30645/ijistech.v2i1.13

A creation can be considered as belonging to someone if they have a valid proof. An original creation that have been changed for certain purposes will definitely eliminate proof of ownership of the creation. A hash function is one method used to test the authenticity of data, while steganography is one method used to maintain the security of confidential data from outside parties. In this study, the Hash MD5 method will be combined with the Least Significant Bit method to test the authenticity of an image. The purpose of testing the authenticity is to find out the truth of ownership of a creation, in this case, we are testing the image. The results of this test are the status of an image that will be declared valid or invalid. Measurement of validity depends on whether there is a similarity between the value of the Hash that has been implanted and the value of the Hash obtained during the test. If the tested image has the same Hash value, then the image will be declared valid, but instead ai image is declared invalid if the image has been modified or ownership status has been changed. From the result of testing the authenticity with several images, it can prove that the combination of the Hash MD5 method with LSB has a good level of security and suitable to authenticity testing.

Co-Authors Abdul Samad Adidtya Perdana, Adidtya Amir Mahmud Husein Amir Mahmud Husein, Mawaddah Harahap, Amir Amsar Yunan Anugreni, Fera Arie Budiansyah Ayesha Muazzam Candra Zonyfar Candra, Rudi Arif Clawdia, Jhessica Dicky Apdilah Diding Kusnady Dimas Sasongko Dina Afriani Eko Pramono Erwinsyah Sipahutar Evan Afri Evan Afri Fachrul Rozi Lubis Ferdy Riza Hantono Hantono Herry Setiawan Hilda Yulia Novita Hrishitva Patel Ilham, Dirja Nur Intan Maulina, Intan Jhessica Clawdia Juanda Hakim Lubis Khairuman Man Maharina Maharina Mhd. Zulfansyuri Siambaton Mohammed Saad Talib Muhammad Hamza Muhammad Rian Almadani Mursidah Nurmala Sridewi Nursila Nursila Nurul Khairina Nurul Khairina Nurul Khairina Pania, Sadri Rina Rina Salsa Dilah Cicilia Putri Surya Hendraputra Wahyudi Lubis

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