Pengamanan Nama Customer Shopee melalui Kombinasi Algoritma Hill Cipher Modifikasi dan Rail Fence Cipher

Laily Wadil Muqadas (Departemen Matematika, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Padjadjaran, Sumedang 45363)
Sisilia Sylviani (Departemen Matematika, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Padjadjaran, Sumedang 45363)
Edi Kurniadi (Departemen Matematika, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Padjadjaran, Sumedang 45363)

Mathematical Sciences and Applications Journal
Vol. 4 No. 2 (2024): Mathematical Sciences and Applications Journal

Science and technology development has made human activities turn into cyberspace activities, one of which is buying and selling. Shopee is one of the e-commerce platforms available. As an online-based platform, Shopee certainly stores lots of user data. Since August 1st, 2022, Shopee has made a policy regarding user data security by censoring the buyer’s name and phone number in the ordering process. This research discusses one way to secure buyer data through cryptography with the concept of super encryption. This concept itself combines more than one encryption method with the goal to create ciphertext that is difficult to solve. The chosen combination for this research is the modified Hill Cipher algorithm before proceeding with the Rail Fence Cipher encryption. Result obtained in this research is possible to be applied in Shopee buyer data security system, seen from the difficulty level of the ciphertext decryption.