发明授权
- 专利标题： Information processing apparatus, information processing system, information processing method, storage medium and program
- 专利标题（中）： 信息处理装置，信息处理系统，信息处理方法，存储介质和程序
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申请号： US10366313申请日： 2003-02-14
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公开(公告)号： US07194630B2公开(公告)日： 2007-03-20
- 发明人: Keiichi Iwamura , Tomochika Murakami , Satoru Wakao
- 申请人： Keiichi Iwamura , Tomochika Murakami , Satoru Wakao
- 申请人地址： JP Tokyo
- 专利权人： Canon Kabushiki Kaisha
- 当前专利权人： Canon Kabushiki Kaisha
- 当前专利权人地址： JP Tokyo
- 代理机构： Fitzpatrick, Cella, Harper & Scinto
- 优先权： JP2002-051825 20020227; JP2002-104068 20020405
- 主分类号： G06K9/68
- IPC分类号： G06K9/68
摘要：
A provider side apparatus provides original digital data together with a digital signature generated by the provider side apparatus, the digital signature detecting whether the original digital data was falsified or detecting a change level given to the original digital data. Upon reception of the digital data, a receiver side apparatus can know the originality of the received digital data or a change level of the received digital data from the original digital data, in accordance with the digital signature corresponding to the digital data.
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