PENERAPAN METODE ALGORITMA GOST PADA PERANCANGAN APLIKASI KRIPTOGRAFI

Abstract

Security and confidentiality of data is a crucial aspect in the field of communication, especially communication using computer media. Science used to secure the data is cryptography. This research will be discussed in the GOST algorithm encrypt and decrypt a text file, implementation by using Visual Basic.Net 2013. The file will be analyzed the results of encryption and decryption based on file size and the time span during encryption and decryption. GOST Cryptography is the science that uses mathematical equations to encrypt and decrypt data. GOST encryption on the text using a randomization system character of plaintext into chiperteks. This allows the security of the data and information contained in the file not to be accessible to those who do not have the authority to access. To obtain the actual information contained in the file, decryption process must be done with the algorithm, calculation functions and the same key. The conclusion of the GOST algorithm has a way of working together, to perform encryption and decryption. This application is expected to be a means of security and confidentiality of the data that is appropriate to protect the data in terms of effective and efficiency in the process of encryption and decryption. Advice can be given is the application is expected to be a learning tool for the user as the knowledge of cryptographic algorithms GOST. Keywords: Application, Cryptography, GOST Algorithm, Visual Basic.Net