| 发明名称 |
ROTATION OF KEYS DURING ENCRYPTION/DECRYPTION |
| 摘要 |
An encrypted program received in an MPEG transport stream is decrypted by receiving a message in the MPEG transport stream, wherein the message contains a key, decrypting the encrypted program based on the key, and replacing the message in the MPEG transport stream with a null packet.
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| 申请公布号 |
US2009208009(A1) |
申请公布日期 |
2009.08.20 |
| 申请号 |
US20090355260 |
申请日期 |
2009.01.16 |
| 申请人 |
HAUGE RAYMOND C;LEWIS RICHARD |
发明人 |
HAUGE RAYMOND C.;LEWIS RICHARD |
| 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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