发明名称 |
CONTENTS AUTHENTICATION SYSTEM AND METHOD, AND RECORDING MEDIUM |
摘要 |
PROBLEM TO BE SOLVED: To provide a contents authentication system or the like for attaining the utilization of contents while preventing disordered duplication and smoothly authenticating the utilization of the contents on the line of low speed/small capacity. SOLUTION: An image display terminal 3 supplies the image ID of an image desired to utilize to a contents server 1 together with its own identification code. The contents server 1 supplies the image data expressing this image to the image display terminal 3 in the state of enciphering the image data with a cryptographic key and transfers the image ID and the identification code of the image display terminal 3 to a license server 2. The license server 2 supplies the cryptographic key for deciphering the image data shown by the transferred image ID to the image display terminal 3 shown by the transferred identification code. The image display terminal 3 acquires the cryptographic key from the license server 2 and stores it in the state of making the specification of contents difficult for a user. Then, the image data are deciphered by this cryptographic key and reproduced in the state of making preservation difficult. |
申请公布号 |
JP2002024178(A) |
申请公布日期 |
2002.01.25 |
申请号 |
JP20000210334 |
申请日期 |
2000.07.11 |
申请人 |
WEB I INC |
发明人 |
IWAMOTO ISAMU |
分类号 |
G06F12/14;G06F12/00;G06F15/00;G06F21/20;G06F21/24;H04L9/32 |
主分类号 |
G06F12/14 |
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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