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Human identification is very important in our daily life. It''s also ubiquitous in communication over insecure networks. Although it has received wide interestin cryptography research and studied extensively,there has been no satisfactory solution without using auxiliary devices,such as trusted computational device.In this thesis we propose a new identification method based on the idea of visual cryptographyto enable a human prover to identify himself to a verifier in an insecure environment without any help of auxiliary devices. Our method is secure against replay attack、wire tapping、impersonation attack, and can achievesystem authentication. Moreover,it is very cheap and can be implemented easily.
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