Perancangan Dan Pengujian Perangkat Lunak Kriptografi Gabungan Playfair Cipher Dan Electronic Code Book (ECB)

Abstract

Information technology is a set of tools to assist the processing or arrangement of the data which has the value of knowledge for its users. In assuring the confidentiality and security of the data required kriptogafi method, which is the study of encryption to maintain the confidentiality the information. It requires software to support specific encoding method so the sent message has become more secure. In this study the authors used a form of research literature and pure experimentation. While the software design methods using RAD (Rapid Application Development) for the software development process emphasize the short development cycles and utilization in the previous function.The data collection techniques using Study Literature, the author studied the books, periodicals, theses, journals, searching the Internet with a trusted source as well as the existing references related to theories of cryptography, algorithms Playfair Cipher with Eletronic Code Book (EBC) and software design. Designing software using Microsoft Visual Basic 6.0. , Combined Playfair Cipher software and Electronic Code Book (ECB) has been run as expected.