发明名称 |
CONTROLLING ACCESS TO CONTENT USING MULTIPLE ENCRYPTIONS |
摘要 |
Controlling access to content using multiple encryptions, including: receiving content comprising media data; first encrypting a substantial portion of the content using a primary key; selecting a subset of the substantial portion of the content; and second encrypting the selected subset of the content using a secondary key different from the primary key.
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申请公布号 |
US2010232604(A1) |
申请公布日期 |
2010.09.16 |
申请号 |
US20100722436 |
申请日期 |
2010.03.11 |
申请人 |
SONY CORPORATION;SONY PICTURES ENTERTAINMENT INC. |
发明人 |
EKLUND, II DON C. |
分类号 |
H04N7/167;H04L9/08;H04L9/14 |
主分类号 |
H04N7/167 |
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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