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Journal : Edu Komputika Journal

Sistem Keamanan E-Voting menggunakan Fungsi Hash dan Algoritma One Time Pad Istiqamah, Nurul; Subiyanto, Subiyanto
Edu Komputika Journal Vol 3 No 1 (2016): Edu Komputika Journal
Publisher : Jurusan Teknik Elektro Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The purpose of this paper is to develop an e-voting security system using a cryptographic hash function and the one-time pad algorithm. The security of e-voting system is applied through the fulfillment of the five aspects of information security that consist of confidentiality, authentication, data integrity, availability and non-repudiation. The implementation of e-voting security system is done by encryption the voting result. The encryption process is divided into two steps. First, by hashing the voting results using SHA-256 hash function then the hash value stored in the database. Second, by encryption the voting result using one time pad algorithm, this algorithm encryption process by performing XOR operation on plaintext and key that are generated using a random number generation approach. And then the description of the OTP algorithm is hashed using SHA-256 hash function. Both of hash value then compared, if it give a same value then the ballot is considered valid and safe from attacks during the transfer process to the server. This paper successfully meets five security aspects of e-voting system through the implementation of login system for confidentiality aspect, time validation and voters validation for authentication aspect, the encryption process during the elections for data integrity aspect, vote counting for availability aspect and time record for non-repudiation aspect.
PENERAPAN MODEL PEMBELAJARAN SAVI BERBANTUAN FLASH PADA MATERI AJAR MENGIDENTIFIKASI IKON PADA MICROSOFT WORD DI SMP NEGERI 3 PATEBON KENDAL Faizah, Elinda Nur; Murnomo, Agus; Subiyanto, Subiyanto
Edu Komputika Journal Vol 6 No 1 (2019): Edu Komputika Journal
Publisher : Jurusan Teknik Elektro Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/edukomputika.v6i1.29548

Abstract

Tujuan penelitian ini adalah untuk mengetahui peningkatan aktvitas siswa dan hasil belajar siswa terhadap pembelajaran dengan model pembelajaran SAVI berbantuan Flash. Jenis penelitian ini adalah Quasi Experimental Design yang mengggunakan desain Nonequivalent Control Group Pretest Post-test. Adapun instrumen yang digunakan adalah tes pilihan ganda dan lembar observasi. Data dianalisis dengan menggunakan t-test dan uji gain. Dari hasil pengamatan aktivitas siswa kelas eksperimen tahap I sebesar 68,55% (baik) naik menjadi 83,46%  (sangat baik). Sedangkan analisis data rata-rata nilai hasil kelas eksperimen dari 75,3 naik menjadi 83,3. Berdasarkan analisis data hasil penelitian dapat disimpulkan bahwa model pembelajaran SAVI berbantuan Flash efektif dan mampu meningkatkan aktivitas dan hasil belajar siswa.