DEVELOPMENT OF VISUAL CRYPTOGRAPHY TECHNIQUE FOR AUTHENTICATION USING FACIAL IMAGES

摘要

Present invention provides specially development of visual cryptography technique for authentication using facial images. Visual Cryptography is an encryption technique where a secret image is cryptographically encoded into n meaningless share images. A basic model for visual cryptography for natural images was proposed by researchers. Security has gained a lot of importance as information technology is widely used. Cryptography refers to the study of mathematical techniques and related aspects of Information Security like data confidentiality, data Integrity, and of data authentication. Visual cryptography is a process where a secret image is encrypted into shares which refuse to divulge information about the original secret image. Its strength is a fact that the decryption of the secret image is through human visual system without computation. Following invention is described in detail with the help of Figure 1 of sheet 1 showing DFD for training phase, Figure 2 of sheet 1 showing DFD of image encryption and Figure 3 of sheet 2 showing DFD of image decryption.