Abstract
Today security is an important thing when we need t o transmit data from one location to another safely . In this paper we are proposing an empirical model of secure data transmi ssion technique with a hybrid approach of Cryptogra phy, Stegnography and rotational analysis. In the initial phase, data is encrypted with DES algorithm with the help of Sessi on key which is generated by the Diffie-Hellman Key exchange Algorithm. In the secon d phase Cipher Data is hidden into the cover image’ s LSB to form the stego image, by considering security as the optimal secur ity parameter. In the third phase, the Stego image is rotated with specific angle. At the receiver end, the image is de-rotated and the c ipher information from the LSB is retrieved and the cipher information is decrypted with session key . This scheme achieves lossless recovery and is diff icult to decrypt by the attackers .
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