An efficient steganographic technique based on chaotic maps and adpative PPM embedding

Steganography and Cryptography proposes popular ways of sending vital information in a secret way. One hides the existence of the message and the other distorts the contents of message itself. Both the methods can be combined by encrypting message using cryptography and then hiding the encrypted message using steganography. The resulting stego-image can be transmitted without revealing that secret information is being concealed. Presently we have very secure methods for both cryptography and Steganography - chaotic algorithm is highly secured among existing technique for cryptography and the Steganography methods, which use spatial domain operations called pixel pair matching (PPM) are highly efficient. The encrypted and scrambled data is embedded in to the cover media based on pixel pair matching technique. Therefore, the idea of applying both of them together is presented with more security levels and got a very highly secured system for data embedding.