| Original document(18 pages) Authorized document(19 pages) 中文版 |
An image generation apparatus (e.g., digital camera) is provided which has a calculation unit for executing a calculation process of generating verification data (digital signature or message authentication code (MAC)) of image data and a calculation process of generating verification data (digital signature or MAC) of addition information of the image data, and a function of creating one of first to third image files, the first image file containing verification data of the image data, the second image file containing verification data of the addition information, and the third image file containing verification data of the image data and verification data of the addition information. With the provision of such an image generation apparatus, it becomes possible to independently detect falsification of the image data and addition information. |
Application Number
申请号 |
02160832 |
Application Date
申请日 |
2002.12.27 |
| Title 名称 |
Image generating device, image file generating method, image verification device and image verification methode |
Publication Number
公开号 |
1430417 |
Publication Date
公开日 |
2003.07.16 |
| Approval Pub. Date |
2005.04.06 |
Granted Pub. Date |
2005.04.06 |
| International Classification 分类号 |
H04L9/32;H04N1/387;H04N5/225 |
Applicant(s) Name
申请人 |
Canon K.K. |
| Address 地址 |
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| Inventor(s) Name 发明人 |
Wakao Satoshi |
| Attorney & Agent 代理人 |
du rixin |
| More information 更 多 信 息 |
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