IMAGE STEGANOGRAPHY USING ADAPTIVE B45 ALGORITHM COMBINED WITH PRE-PROCESSING BY TWOFISH ENCRYPTION

Security is one of the main issues when there is a question of transmitting highly confidential data to various locations over the internet. This paper presents an approach to create a secure system to provide optimal security during the transmission over an insecure channel. Cryptography and steganography alone cannot be used for transmission of data because each has their own weaknesses. But with the proposed system, both the technologies are used together to create a near impossible way for third parties to breach the system and gain confidential data. The system uses latest TwoFish algorithm for encryption while a new approach to perform the steganography is used i.e. Adaptive B45 steganography technique.