发明名称 |
Device and method for providing video stream having integrity |
摘要 |
Provided are a device and method for providing a video stream, in which a hash value of a frame is included in the header of a video stream, and authentication information about the header is inserted into the video stream, thus ensuring integrity against the forgery of the video stream. The device includes a base frame encoding unit (110) which encodes a base frame, an enhancement frame encoding unit (120) which encodes an enhancement frame, a frame encryption unit (130) which encrypts the encoded base frame and the encoded enhancement frame, a hash processing unit (140) which calculates hash values for the encrypted base frame and the encrypted enhancement frame and hash values included in headers of previous and subsequent video streams, a header management unit (150) which includes information about the encoded base frame and the encoded enhancement frame and the calculated hash values, in a header, and manages the header, and an authentication information creation unit which creates authentication information about the header. |
申请公布号 |
EP1874056(A2) |
申请公布日期 |
2008.01.02 |
申请号 |
EP20070110249 |
申请日期 |
2007.06.14 |
申请人 |
SAMSUNG ELECTRONICS CO., LTD. |
发明人 |
KIM, HYOUNG-SHICK;PARK, KYUNG-MO;CHANG, MYUNG-SOO |
分类号 |
H04N7/173;G09C1/00;H04L9/32;H04N5/765;H04N5/91;H04N7/167;H04N7/24;H04N19/00;H04N19/102;H04N19/134;H04N19/196;H04N19/30;H04N19/39;H04N19/40;H04N19/423;H04N19/467;H04N19/70;H04N21/21;H04N21/441 |
主分类号 |
H04N7/173 |
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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