
基本信息:
- 专利标题: 一种多因素文件水印生成提取方法和系统
- 专利标题(英):Multi-factor file watermark generation and extraction method and system
- 申请号:CN201711237184.3 申请日:2017-11-30
- 公开(公告)号:CN108108632A 公开(公告)日:2018-06-01
- 发明人: 牟琳 , 王川 , 张士存 , 孙华 , 贺婷婷 , 何彬
- 申请人: 中车青岛四方机车车辆股份有限公司
- 申请人地址: 山东省青岛市城阳区锦宏东路88号
- 专利权人: 中车青岛四方机车车辆股份有限公司
- 当前专利权人: 中车青岛四方机车车辆股份有限公司
- 当前专利权人地址: 山东省青岛市城阳区锦宏东路88号
- 代理机构: 北京元中知识产权代理有限责任公司
- 代理人: 张则武
- 主分类号: G06F21/62
- IPC分类号: G06F21/62 ; G06F21/16
The invention discloses a multi-factor file watermark generation and extraction method. The method comprises the following steps of: obtaining user side information which comprises mobile terminal information, application program information and user information; generating a digital watermark according to the user side information, randomly generated sensitive information and a distribution serial number; embedding the digital watermark in a distributed file; and matching information in the user side information and the digital watermark at the mobile terminal so as to access file content inan application program on mobile terminal equipment through logging in a specific user. According to the method, after the file is leaked, the sensitive information reserved in a database is comparedwith the sensitive information obtained in the digital watermark to judge whether the content of the file watermark is real or not, so that a source of the file is correctly traced.
IPC结构图谱:
G | 物理 |
--G06 | 计算;推算;计数 |
----G06F | 电数字数据处理 |
------G06F21/00 | 防止未授权行为的保护计算机或计算机系统的安全装置 |
--------G06F21/10 | .保护分布式程序或内容,例如版权资料的出售或许可 |
----------G06F21/62 | ..通过一个平台保护数据存取访问,例如使用密钥或访问控制规 |