High Secure Data Embedding Using Steganography And Cryptography

Cryptography and Steganography are the two major tech- niques for secret communication. The contents of secret message are scrambled in cryptography, where as in steganography the secret message is embedded into the cover medium. In this proposed system we developed high security model by combining cryptographic Steganographic security. This paper proposes a data hid- ing method based on pixel pair matching(PPM) with cryptographic technique. Here we applying a double transposition method with pixel pair matching. The ba- sic idea of PPM is to use the values of pixel pair as a reference coordinate, and search a coordinate in the neigh- borhood set of this pixel pair according to a given message digit. The pixel pair is then replaced by the searched coor- dinate to conceal the digit. The proposed method always has lower distortion for various payloads and also se- cures under the detection of some well-known steganalysis techniques. Hiding data is better than moving it shown and encrypted. To hide data in a popular object that will not attract any attention In case the data is extracted; it will be encrypted.our proposed method enhances the se- curity level.