发明名称 |
PROTECTION METHOD, DECRYPTION METHOD, PLAYER, STORAGE MEDIUM, AND ENCRYPTION APPARATUS OF DIGITAL CONTENT |
摘要 |
A digital content protection method includes distributing, together with an encrypted content, an encrypted protected program key, a protected content key, and a protected code including an individual instruction code, at least some elements of which are designed according to a unique operation code specification for each content player or for each content player group.
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申请公布号 |
US2013163755(A1) |
申请公布日期 |
2013.06.27 |
申请号 |
US201113820343 |
申请日期 |
2011.05.30 |
申请人 |
NAGAI YUJI;SAKAMOTO HIROYUKI;NAKAI HIROTO;MIYATA SEIJI;MIMURA HIDEKI;KABUSHIKI KAISHA TOSHIBA |
发明人 |
NAGAI YUJI;SAKAMOTO HIROYUKI;NAKAI HIROTO;MIYATA SEIJI;MIMURA HIDEKI |
分类号 |
H04L9/08 |
主分类号 |
H04L9/08 |
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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