公开(公告)号：US06940995B2

公开(公告)日：2005-09-06

申请号：US10169210

申请日：2001-11-02

申请人： Jong Uk Choi ,  Gi Chul Choi

发明人： Jong Uk Choi ,  Gi Chul Choi

IPC分类号： G06T11/60 ,  G06F17/00 ,  G06F21/00 ,  G06K7/00 ,  G06T1/00 ,  G09C5/00 ,  H04N1/32 ,  H04N1/387 ,  H04K1/00

CPC分类号： H04N1/32144 ,  G06F21/64 ,  H04N1/32101 ,  H04N1/32315 ,  H04N2201/3233 ,  H04N2201/324 ,  H04N2201/327

摘要： The present invention relates to a method and apparatus for authenticating various types of digital certificates by using a text embedding method. The execution of the present invention is divided into two case, one case including images in the certificate and another case not including the images in the certificate, according to the characteristics of the certificate. In the former case, a text embedding method is applied to images included in the certificate to embed a series of information text (a specific number of the certificate, and issuing organization, name of a person in charge, etc.) designated by a person who issues the certificate into the images. In the latter case, there is generated an image imperceptible to the human eve but having the same color as the ground color certificate.

摘要翻译： 本发明涉及一种通过使用文本嵌入方法来认证各种类型的数字证书的方法和装置。 根据证书的特征，将本发明的执行划分为两种情况，一种情况包括证书中的图像和不包括证书中的图像的另一种情况。 在前一种情况下，将文本嵌入方法应用于证书中包含的图像，以嵌入一系列信息文本（特定号码的证书，发行机构，负责人的姓名等），由人指定 谁将证书发布到图像中。 在后一种情况下，产生了人类前夕不可察觉但具有与地面颜色证书相同颜色的图像。