Data Encryption by Using Vigenere Algorithm with Stegonargaphic Technique

Abstract

In the current computing community, secure data transfer is limited due to its attack made on data communication. Solutions which came to the rescue are cryptography and steganography. Cryptography is often used in situations where the existence of the message is clear, but the meaning of the message is obscured. In particular, the sender transforms the message into a form that only the intended recipient of the message can decrypt and read. Steganography is often used in situations where the actual existence of the message needs to be obscured. This paper is intended to ensure secure data transfer between the source and destination by providing double layer of protection using both cryptography and steganography. To implements both cryptography and steganography, the message was encrypted before it is hidden inside a cover image. In this paper, the encryption was done by using vigenere encryption method and the ciphered message was embedded by using LSB algorithm.