A Novel Face Template Protection Scheme based on Chaos and Visual Cryptography

Protection of biometric data and templates is a crucial issue for the security of biometric systems This paper proposes new security architecture for protection of face templates using visual cryptography and chaotic image encryption. The use of visual cryptography is explored to preserve the privacy of biometric image by decomposing each private face image into two independent public host images such that the original image can be revealed only when both images are simultaneously available. The algorithm ensures protection as well as privacy for image using a fast encryption algorithm based on chaotic encryption. Chaos based cryptography is applied on to individual shares. Using this one can cross verify his identity along with the protection and privacy of the image.