Original document(23 pages)  中文版
    An image generation apparatus, in generating verification data (digital signature or MAC) necessary for detecting an alteration in image data, generates secret information Ks necessary for the generation of the verification data, utilizing secret information A and secret information B. In this manner, the image generation apparatus makes difficult the leakage and the analysis of the secret information Ks, necessary for generation of the verification data for the image data, whereby the safety and the confidentiality of the secret information Ks can be improved.
Application Number
申请号		 02160848 Application Date
申请日		 2002.12.27
Title 名称 Image generation equipment and verification data generating method
Publication Number
公开号		 1430411 Publication Date
公开日		 2003.07.16
Approval Pub. Date Granted Pub. Date
International Classification 分类号 H04N1/387;H04N5/91;H04N5/913;H04N7/06;H04N7/167
Applicant(s) Name
申请人		 Canon K.K.
Address 地址
Inventor(s) Name 发明人 Wakao Satoshi;Ikida Yasuyuki
Attorney & Agent 代理人 wu lili
More information 更  多  信  息


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