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The rapid development of communication technology due to the global spread of the internet and the digital information revolution has given rise to a huge increase in the use and transmission of multimedia information. Encryption technology is studied in this paper, and a new image encryption algorithm based on correlation of pixels is proposed. The main goal of this paper is security management. Researchers have proposed incompatible methods to encrypt images. So, here we go through a new way of image encryption and decryption using block based image encryption using affine transform. First of all the plain image is divided into fixed size blocks. All these blocks then shuffled according to the proposed algorithm and we get a block shuffled image. At last the encrypted algorithm of affine is used iteratively for each of the pixels. It uses the keys for the purpose of encryption.

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