发明名称 |
System for securing encryption renewal system and for registration and remote activation of encryption device |
摘要 |
An encryption renewal system for generating entitlement control messages, the system being secured by physical separation of components. The encryption renewal system has a first computing platform for performing non-secure tasks associated with one or more control messages that transmit one or more keys to a subscriber; and a second computing platform physically separate from the first computing platform containing one or more application specific integrated circuit chip for generating the one or more control messages. In addition, a method by the encryption renewal system is used to register an off-line encryption device in order to begin encrypting clear content. The method includes generating data for registering the off-line encryption device; encrypting the data with one or more cryptographic keys to form encrypted data; forwarding the encrypted data to the off-line encryption device; and retrieving the data from the encrypted data, wherein the off-line encryption device begins to encrypt clear content only after the data is retrieved.
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申请公布号 |
US2002051539(A1) |
申请公布日期 |
2002.05.02 |
申请号 |
US20010898168 |
申请日期 |
2001.07.03 |
申请人 |
OKIMOTO JOHN I.;TANG LAWRENCE W. |
发明人 |
OKIMOTO JOHN I.;TANG LAWRENCE W. |
分类号 |
H04N7/16;H04N7/167;H04N7/173;(IPC1-7):H04N7/167 |
主分类号 |
H04N7/16 |
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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