发明名称 |
PROXY MODULES |
摘要 |
<p>There is described a proxy module for use in a head-end. The head-end comprises an entitlement control message (ECM) generator arranged to generate ECMs. The head-end further comprises an encryption module arranged to encrypt content using a control word. The proxy module is arranged to: access a content control word; use the ECM generator to generate a content ECM including the content control word; generate a supplementary control word; use the ECM generator to generate a supplementary ECM including the supplementary control word; use the encryption module to encrypt the content ECM using the supplementary control word; and use the encryption module to encrypt content using the content control word. A corresponding method of providing encrypted content is also provided. There is also described a proxy module for use in a receiver arranged to receive entitlement control messages (ECMs) and encrypted content. The receiver comprises a secured module arranged to process an ECM so as to provide a control word. The receiver further comprises a decryption module arranged to decrypt encrypted content using a control word. The proxy module is arranged to: use the secured module to obtain a supplementary control word from a supplementary ECM; use the supplementary control word in the decryption module to obtain a content ECM from an encrypted version of the content ECM; use the secured module to obtain a content control word from the content ECM; and use the content control word in the decryption module to decrypt encrypted content. A corresponding method of enabling a receiver to access encrypted content is also provided.</p> |
申请公布号 |
WO2014117851(A1) |
申请公布日期 |
2014.08.07 |
申请号 |
WO2013EP51963 |
申请日期 |
2013.01.31 |
申请人 |
IRDETO B.V. |
发明人 |
WESTERVELD, EGBERT;DEKKER, HANS |
分类号 |
H04H60/23;H04N21/266;H04N21/4623 |
主分类号 |
H04H60/23 |
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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