发明名称 |
ENCRYPTION DEVICE, DECRYPTION DEVICE, ENCRYPTION METHOD, AND DECRYPTION METHOD |
摘要 |
<p>A document data encryption device includes an identifier setting unit which determines whether an encryption region has been divided by a document data edition work. If yes, the identifier setting unit sets identifiers each indicating one of the four corners of the encryption region before the division, in corresponding positions of the respective divided encryption regions.</p> |
申请公布号 |
WO2011027391(A1) |
申请公布日期 |
2011.03.10 |
申请号 |
WO2009JP04326 |
申请日期 |
2009.09.02 |
申请人 |
FUJITSU LIMITED;ANAN, TAIZO |
发明人 |
ANAN, TAIZO |
分类号 |
H04N1/387 |
主分类号 |
H04N1/387 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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