International Journal of Advanced Research in Computer Science and Software Engineering (IJARCSSE)
Information security has become a very critical aspect of modern computing systems. With the global acceptance of the Internet, virtually every computer in this world is connected to every other computer. Therefore, with the advent of the productivity and opportunity, it has also created risks for new users. Hence, cryptography is a tool by which the whole of the communication system can be made secure. Vigenere cipher and Ceaser Cipher when used alone proves out to be very vulnerable. This paper presents the combination of the two techniques. Combining Ceaser cipher and Vigenere cipher removes their basic weakness to give a cipher text which is hard to obtain.