One-time pad password system based on visual cryptography

Abstract

The invention provides a one-time pad password system based on visual cryptography. The technical scheme is that the one-time pad password system comprises a main-control module, an identity characteristic input interface, a visual information display terminal, a password input terminal and a plurality of subscriber masking pictures, wherein each subscriber masking picture corresponds to a subscriber; the identity characteristic input interface receives the identity characteristic data input of subscribers and sends the identity characteristic data input to the main-control module; the password input terminal receives the password input and sends the password input to the main-control module; the visual information display terminal receives visual cryptography subsidiary pictures sent by the main-control module and displays the visual cryptography subsidiary pictures to the subscribers; the subscribers place the possessed subscriber masking pictures on a first aligning frame to acquire the password P at the time; the main-control module comprises a master control program and a database; the main-control module takes a computer system as the platform and further comprises another master control program and another database to achieve subscriber register and authentication identification. The one-time pad password system provided by the invention can achieve safe, convenient andefficient subscriber identity authentication.

Description

technical field [0001] The invention belongs to the field of information security, and more specifically, the invention relates to a password system with the feature of one-time pad realized by visual cryptography technology. Background technique [0002] Decompose an original image into two random sub-images. Due to the randomness of the decomposition, when using human vision to observe the two sub-images, it is impossible to obtain any information of the original image, that is, to obtain the original image information from a single sub-image. is impossible. Only when the two subimages are completely superimposed, the original image is reconstructed from a visual effect point of view. The technique of encrypting and decrypting using the above principles is called visual cryptography, and the two subgraphs are usually referred to as visual cryptography subgraphs. Visual cryptography can be applied in the field of information security to authenticate legitimate users. [...

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At present, the information about the one-time password system using visual cryptography technology has not been retrieved

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