2 Method and system for verifying electronic document security using 2D barcode block division

摘要

According to another aspect of the present invention, there is provided an electronic document security verification method using two-dimensional bar code block division, comprising: generating a block obtained by dividing a high-density two-dimensional bar code including information of an issuance document; Determining an order of the generated blocks; Generating a first hash value by applying a hash function to data of a first block of the generated block; Encrypting data of a second block using the first hash value; Encrypting the third block based on the encrypted result of the second block; Generating a final key value for the encrypted third block; And generating a high-density two-dimensional bar code in which the whole block is encrypted based on the final key value.