发明申请
US20090210715A1 Document verification apparatus, document verification method, and computer product
审中-公开
文件验证装置，文件验证方法和计算机产品
- 专利标题： Document verification apparatus, document verification method, and computer product
- 专利标题（中）： 文件验证装置，文件验证方法和计算机产品
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申请号： US12320595申请日： 2009-01-29
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公开(公告)号： US20090210715A1公开(公告)日： 2009-08-20
- 发明人: Tetsuya Izu , Masahiko Takenaka
- 申请人： Tetsuya Izu , Masahiko Takenaka
- 申请人地址： JP Kawasaki
- 专利权人： FUJITSU LIMITED
- 当前专利权人： FUJITSU LIMITED
- 当前专利权人地址： JP Kawasaki
- 主分类号： H04L9/32
- IPC分类号： H04L9/32 ; G06F21/24
摘要：
In verifying a digital document, an input of a digital document is received and the digital document is divided into arbitrary constituent parts. A normal random number or a pseudo random number is assigned to each of the constituent parts according to the order in which the constituent parts appear in the digital document. Thus, verification of the authenticity of a digital document is enabled even when an alteration, such as a change of the order of the partial documents or a copy thereof, has been made to the digital document.
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