Image Encryption by Taking Block of Pixels
Keywords:
Cryptography, Encrypting, Key, Decrypting,Human-Memorability, Confidentiality, Integrity, Array, Noise, Image, Pixel, Randomization, Cyber security, Hacking, Steganography, Digital Image ProcessingAbstract
The process of securing the data in communication from source to receiver is called cryptography. In the
process of cryptography, we use a key and an algorithm. The key influences the security of the data partially. Also, the
algorithm influences the security partially. In cryptography, the size of the key is limited due to human memorability. It is
impossible to design the key by knowing its dimensions. A modified and advanced approach is proposed in this paper for
increasing the security of the data. We are concentrating the key part of the cryptography as well as the input image for
increasing the security of the data. We use the 2Dimensional graphic image designed by the user which composed of pixels in
which every pixel have same or different ASCII value. In the proposed algorithm, we will generate a key of any size which is
used in encryption as well as in decryption.
