PENERAPAN ALGORITMA ADVANCED ENCRYPTION STANDARD (AES-256) DENGAN MODE CBC DAN SECURE HASH ALGORITHM (SHA-256) UNTUK PENGAMANAN DATA FILE

Abstrak

Data Protection is one of the important things to protect important messages and information from corruption, compromise or loss so that messages and information remain safe. Encryption and description techniques are considered to be able to secure data properly by protecting files from being easily read or seen by unauthorized parties. In this case, the authors used data from University of Bhayangkara Jakarta Raya to be able to secure their university data using a cryptography symmetrical algorithm called Advanced Encryption Standard (AES) and Secure Hash Algorithm (SHA) as a solution to existing problems. The AES algorithm process is divided into four steps, the first step is SubBytes, the second step is ShiftRows, the third step is MixColums and the last step is AddRoundKey. And using the SHA algorithm as the hashing function. The algorithm is applied to a desktop-based file description and encryption application with the C sharp programming language