IMAGE SECURITY ENHANCEMENT USING KNIGHT’S TOUR AND TRIPLE DES TECHNIQUE
Abstract
In some scenario, the owner does not trust the service provider, so the plain content unrevealed is desired. For example, when the secret data to be transmitted are encrypted, a channel provider without knowing the key may try to compress the encrypted data due to the limited resources. Different symmetric and hybrid encryption schemes have been applied in cloud for achieving suitable level of data security. In this project a novel hybrid encryption scheme, which combines symmetric key algorithm using images as secret keys and symmetric data key encryption using 3DES/AES, is proposed. This project proposes a scheme for reversible data hiding in encrypted images. Text data is encoded using Perturbation and Triple DES Cipher algorithm and Knight Tour problem is used to select the block indices in carrier image and the content is embedded. The reverse process is applied for retrieval. In addition, a high secure dual encryption technique is used. At first, the owner encrypts the original image using an encryption key. Then, a data-hider may replace the least significant bits of the image using a key to create a space to accommodate additional data. With an encrypted image containing data, if a receiver has the key, he can extract the data though he does not know the image content. If the receiver has the encryption key, he can decrypt the received data to obtain an image, but cannot extract the additional data.
Author
Mr. M. Uvekh a, Ms. R. Monisa b, Ms. G. Radhika c, Ms. S. Poovizhi d
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