Secure Data Sharing Using Visual Cryptography in for Computing

In todays world the latest technology of fog computing is becoming the most popular and widely used means for storage and computation. Fog computing is nothing but extend of cloud computing. The data security, integrity, congeniality are security feature in fog computing. Many security techniques have issues like collision attack of malicious user, heavily computation and generation of large keys. In The existing system text based encryption is used, to implement image encryption and decryption along with watermarking image shearing over cloud to be a more secure. The proposed system uses Visual cryptography to provide equal digital right to all the owner and Watermarking is applied on each shear to authenticate each shear with its owner. To provide more security during transmission of the shears encryption can be applied on each shear. Visual Cryptography is used in combination with watermarking for authentication. In visual cryptography, the shears created can be misused by third party. Therefore to insure higher level of cryptography algorithm is a symmetric algorithm which is used to encrypt and decrypt the shears created by Visual cryptography. With the help of this system data accessible only to the authenticated client and we are able to ensure secure data shearing using fog computing.