Hiding method and system for signature of credible two-dimensional code

Abstract

The invention provides a hiding method and system for a signature of a credible two-dimensional code. The hiding method comprises the signature hiding step that a message m passes through hash to obtain an h(m), Ks and Kp are a secrete key and a public key respectively, the Ks is used for encrypting the h(m) to obtain a signature D, the m and the D are encoded to obtain data bit streams Data m of the m and data bit streams Data D of the D, each data bit stream is composed of a data codeword and an error correction codeword, the Data m are arranged in areas of data codewords and error correction codewords, and the Data D are arranged in a signature hiding area; and the signature recognition step that an m0 is obtained when a stop character is scanned, the D is obtained by scanning data after the stop character, the Kp is used for decrypting the D to obtain the h(m), the hash is carried out on the m0 to obtain an h(m0), the h(m) is compared with the h(m0) to verify the credibility. The hiding method and system for the signature of the credible two-dimensional code have the advantages that the issued message is not interfered by credible measures, the usability of the credible two-dimensional code is ensured, and no special requirement for equipment exists.

Description

technical field [0001] The invention relates to the technical field of two-dimensional codes, in particular to a method and system for hiding signatures in trusted two-dimensional codes. Background technique [0002] With the increasing popularity of mobile phones with camera functions, two-dimensional code technology has been more and more widely used. At the same time, the credibility of QR codes has also been exposed. There are three main types: one is the copyright of QR codes, where attackers publish QR codes in the name of users; Determine whether the information of the two-dimensional code is credible; the third is that the information of the two-dimensional code is complete, and the user cannot determine whether the information obtained by scanning the two-dimensional code is complete or has not been modified. For two-dimensional codes, trusted technology is a safe and reliable guarantee for two-dimensional codes, and its main function is to prevent two-dimensional ...

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