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All Journal Jurnal Teknologi Pendidikan Jurnal Pengabdian UntukMu NegeRI Jurnal Teknik dan Informatika INFOKUM MEANS (Media Informasi Analisa dan Sistem) Instal : Jurnal Komputer JURNAL TEKNOLOGI INFORMASI & KOMUNIKASI DALAM PENDIDIKAN
Ressy Dwitias Sari
Universitas Negeri Jakarta
Religion Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Social Sciences Transportation

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Journal : MEANS (Media Informasi Analisa dan Sistem)

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Implementasi Algoritma Merkle-Hellman Knapsack dalam Penyandian Record Database Reni Rahmadani; Harvei Desmon Hutahaean; Ressy Dwitias Sari
MEANS (Media Informasi Analisa dan Sistem) Volume 5 Nomor 2
Publisher : LPPM UNIKA Santo Thomas Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (915.713 KB) | DOI: 10.54367/means.v5i2.983

Abstract

A lot of data is misused without the data owner being aware of it. Software developers must ensure the security user data on their system. Due to the size of the market that houses data, the security of record databases must be of great concern. Cryptographic systems or data encryption can be used for data security. The Merkle-Hellman Knapsack algorithm is included in public-key cryptography because it uses different keys for the encryption and decryption processes. This algorithm belongs to the NP-complete algorithm which cannot be solved in polynomial order time. This algorithm has stages of key generation, encryption, and decryption. The results of this study secure database records from theft by storing records in the form of ciphertext/password. Ciphertext generated by algorithmic encryption has a larger size than plaintext.
Penerapan Algoritma Mixed Heuristic dalam Penilaian Ujian Pada Jurusan Pendidikan Teknik Elektro Universitas Negeri Medan Ressy Dwitias Sari; Reni Rahmadani
MEANS (Media Informasi Analisa dan Sistem) Volume 5 Nomor 2
Publisher : LPPM UNIKA Santo Thomas Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (684.879 KB) | DOI: 10.54367/means.v5i2.989

Abstract

During the COVID-19 pandemic, teaching and learning activities switch of technology such as e-learning. In the Department of Electrical Engineering Education, Universitas Negeri Medan, 80% of electrical lecturers provide multiple choice exams and short answers. The scoring system cannot be performed automatically by a computer. The algorithm used in this study is a Mixed Heuristic algorithm. This algorithm is used because it is an effective way of working for sentences of more than 1 word. And give the results in the form of ranking in the form of similarity proportions. From the process of using a mixed heuristic algorithm, it can be proven that this algorithm can perform keywords on the answer keys and answers of users or students. The algorithm is also able to provide value to a user or student's answers
Co-Authors Azmi Rizki Lubis Bagoes Maulana Bagoes Maulana Bakti Dwi Waluyo Eka Dodi Suryanto Feriyansyah Feriyansyah Harvei Desmon Hutahaean Indah Cintiya Manalu Ira Puji Annastasya Lisa Melvi Ginting Mendoza, Muhammad Dominique Mhd. Dominique Mendoza Putri, Tansa Trisna Astono Rahmadani, Reni Salsyanabila Riviandy Harahap Sapitri Januariyansah Vivi Ramayanti Harahap