发明名称 |
Method and apparatus for contents information |
摘要 |
A first-key signal representative of a first key is generated from first-key base information being a base of the first key. Contents information is encrypted into encryption-resultant contents information in response to the first-key signal. A second-key signal representative of a second key is generated on the basis of initial-value information of a given initial value according to a predetermined key generation algorithm. The first-key base information is encrypted into encryption-resultant first-key base information in response to the second-key signal. The encryption-resultant contents information, the encryption-resultant first-key base information, the initial-value information, and algorithm identification information for identifying the predetermined key generation algorithm are transmitted or recorded. |
申请公布号 |
US6975730(B1) |
申请公布日期 |
2005.12.13 |
申请号 |
US20000726433 |
申请日期 |
2000.12.01 |
申请人 |
VICTOR COMPANY OF JAPAN, LTD. |
发明人 |
KUROIWA TOSHIO;SUGAHARA TAKAYUKI;INOHA WATARU;UEDA KENJIRO;HIGURASHI SEIJI |
分类号 |
G09C1/00;G06F21/00;H04L9/08;H04L9/12;(IPC1-7):H04L9/00 |
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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