Title:
二次元コード認証装置、二次元コード生成装置、二次元コード認証方法、及びプログラム
Document Type and Number:
Japanese Patent JP5731071
Kind Code:
B2
Abstract:
A two-dimensional code authenticating device reads a self-authentication two-dimensional code to obtain an RS bit string, and detects a bit string c' as an error using the RS bit string. Next, an exclusive OR between a bit string 1 included in the RS bit string and the bit string c' detected as an error is calculated to obtain a bit string c', and a bit string md is obtained by decrypting the bit string c' through a scheme corresponding to the encryption. Subsequently, it is determined whether or not the decrypted bit string md matches the bit string m included in the RS bit string, thereby authenticating the self-authentication two-dimensional code.
Inventors:
Predecessor Kenichi
Yoichi Higashi
Hideaki Kishi
Yoichi Higashi
Hideaki Kishi
Application Number:
JP2014530431A
Publication Date:
June 10, 2015
Filing Date:
August 17, 2012
Export Citation:
Assignee:
at Communications Co., Ltd.
International Classes:
G06K7/14; G06V30/224
Domestic Patent References:
| JPH07254037A | 1995-10-03 | |||
| JP2009099091A | 2009-05-07 | |||
| JP2007042054A | 2007-02-15 | |||
| JP2008299422A | 2008-12-11 |
Attorney, Agent or Firm:
Kimura Mitsuru