发明名称 |
Technique for determining usage of encrypted media content |
摘要 |
<p>A technique for determining usage of encrypted media content is described. A method implementation of this technique comprises the steps of obtaining a short-term key for decrypting the media content, obtaining a long-term key for decrypting the short-term key, decrypting the short-term key based on the long-term key, decrypting the media content based on the decrypted short-term key, and logging a parameter relating to the short-term key as a basis for determining media content usage. The short-term key may be a Traffic Encryption Key, TEK, and the long-term key may be a Service Encryption Key, SEK.</p> |
申请公布号 |
EP2476228(B1) |
申请公布日期 |
2013.08.21 |
申请号 |
EP20090778431 |
申请日期 |
2009.09.09 |
申请人 |
TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) |
发明人 |
CATREIN, DANIEL;KAMPMANN, MARKUS;RUSERT, THOMAS |
分类号 |
H04L29/06;G06F21/10;H04H60/23;H04L9/08;H04N21/4623;H04N21/6334 |
主分类号 |
H04L29/06 |
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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