发明名称 |
METHOD AND APPARATUS FOR ACQUIRING ENCRYPTION KEY TO PROVIDE PAY CHANNEL |
摘要 |
A mobile terminal is configured to acquire an encryption key to decrypt a pay channel encrypted with a smartcard profile by the mobile terminal in a Multimedia Broadcast/Multicast Service (MBMS) mobile broadcast system. The mobile terminal is configured to purchase a specific pay channel, determine validity of an encryption key, store a range of a valid encryption key identification value, and initialize a reference Time Stamp (TS) value. The mobile terminal also; extracts an encryption key identification value and a TS value from a last received Short Term Key Message (STKM), when a view request for the specific pay channel is created; and determines that an encryption key is valid, when the extracted TS value satisfies the reference TS and the extracted encryption key identification value falls within a range of the valid encryption key identification value, and extracts and acquires an encryption key from the STKM. |
申请公布号 |
WO2010050729(A2) |
申请公布日期 |
2010.05.06 |
申请号 |
WO2009KR06230 |
申请日期 |
2009.10.27 |
申请人 |
SAMSUNG ELECTRONICS CO., LTD. |
发明人 |
CHOI, YOUNG-JIN;CHO, JEONG-SIK;KIM, YOUNG-JIP;PARK, JOON-HO;LEE, BYOUNG-DAI;LEE, TAE-SOO |
分类号 |
H04N7/167;G06Q20/00 |
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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