关键词: 认证, 视觉密码, 条形码, 消息认证码

Abstract: An efficient and credible authentication schema was constructed based on the visual cryptography. It avoided the disadvantages of traditional cryptography by adopting only two cryptography components: visual cryptography and MAC, and the safety has not been lowered down. Bar code was introduced into this schema as secret image to reduce the complexity and difficulty of the server's auto-recognition of secret information which was hidden in images, so that made the schema more efficient. In the end of this paper, we analyzed the schema's safety, and the result showed that the new schema can resist common attack effectively.

Key words: authentication, visual cryptography, bar code, MAC