发明名称 |
Contents recorder/reproducer |
摘要 |
A unidirectional function circuit generates a first encryption key according to the device identification information stored in a device identification information holding unit. Another unidirectional function circuit generates a second encryption key that depends on a write block address. A contents key generator generates a contents key using the first encryption key, second encryption key, and relation information. An encryptor records contents, which are encrypted using the contents key, onto a HDD. |
申请公布号 |
US2003140239(A1) |
申请公布日期 |
2003.07.24 |
申请号 |
US20030341421 |
申请日期 |
2003.01.14 |
申请人 |
KUROIWA TOSHIO;HIGURASHI SEIJI |
发明人 |
KUROIWA TOSHIO;HIGURASHI SEIJI |
分类号 |
G06F12/14;G06F12/00;G06F21/24;G11B20/00;G11B20/10;H04L9/08;(IPC1-7):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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