The Basic of Cryptography and Encryption System Design Model
Iskandar Muda1*, Abikusno Dharsuky2, Naleni Indra3, Jaya Hartina Harahap4, Harnita Sari Lulistina Siregar5, Agung Wahyudhi Atmanegara6, Erlina7

Universitas Sumatera Utara

Abstract

The purpose of this paper is to develop of cryptographic technology continues to grow in the presence of a cryptographic system that is able to hide messages in order to avoid the threat of cybercrime. This research uses descriptive and experimental research design. Experiment is to do the design and implementation of encryption and decryption systems as a description of the problem as well as the design of descriptive research that describes the problem by collecting written as literature references such as books, journals, sources from the internet and other forms of writing that deals with the issues raised. The analysis technique used systems using the system modeling tool Unified Modeling Language (UML) to describe cryptographic encryption and decryption system is built. This cryptographic applications designed using the programming language Visual Basic .Net 2010. This study was conducted to produce a draft of cryptographic software that makes it easy for users to perform secure data that is personal and public. The conclusion from the analysis is a system of cryptographic encryption and decryption can help the user to maintain the confidentiality of the document, document integrity, non-repudiation and authentication. Advice can be given that the author is still the need for modifications to the display application and development of the design of cryptographic systems in order to attract the user wishes to use this cryptographic application program.

Keywords: system design, Cryptography, Document, Triple DES, RSA.

Topic: Economic, Business and Technology