发明名称 |
CIPHERING AND DECIPHERING OF MULTIMEDIA DATA |
摘要 |
A data for encrypting multi-media data comprises the entry of an encryption index (18) into a determination data block (10, 30) of said data which indicates an encryption algorithm to be used. In reaction to the encryption index, an encryption algorithm is selected in the determination data block (10, 30) from a plurality of such algorithms. The multi-media data are encrypted using the selected encryption algorithm. Various other entries in the determination data block (10, 30), to which the multi-media data are allocated, free an encryption device and permit fast access to a databank of encrypted multi-media data and the customer and data-specific use of the multimedia data while respecting copyrights. |
申请公布号 |
CA2250931(A1) |
申请公布日期 |
1997.12.31 |
申请号 |
CA19972250931 |
申请日期 |
1997.04.14 |
申请人 |
FRAUNHOFER-GESELLSCHAFT ZUR F RDERUNG DER ANGEWANDTEN FORSCHUNG E.V.;FRAUNHOFER-GESELLSCHAFT ZUR F RDERUNG DER ANGEWANDTEN FORSCHUNG E.V. |
发明人 |
POPP, HARALD;RUMP, NIELS;ZELLER, JUERGEN |
分类号 |
G09C1/00;G11B20/10;H04L9/00;H04L9/08;H04L9/32;H04L9/36;H04L29/06;H04N7/14;H04N7/167 |
主分类号 |
G09C1/00 |
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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