发明名称 |
MECHANISM FOR STORING, TRANSFERRING, ENCRYPTING AND LOCKING MULTI-MEDIA FILES |
摘要 |
The present invention relates to a method and apparatus for storing and transferring multi-media files in a blocked and encrypted form whereby the content is retained in a form that provides protection against unwanted copying and distribution. In transfer, each recipient of the same multi-media files may receive a uniquely encrypted version, where the keys are tied to some unique identifier of the end-user device, or of the end-user. A multi-media files is then played directly from the encrypted files by presenting the codec with a continuous stream of data, but without ever storing the whole file in unencrypted format.
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申请公布号 |
WO03021907(A1) |
申请公布日期 |
2003.03.13 |
申请号 |
WO2002GB03679 |
申请日期 |
2002.08.09 |
申请人 |
INTERNET-EXTRA LTD;ALDRIDGE, JANE, LESLEY;GAFFNEY, PHILIP, MICHAEL |
发明人 |
ALDRIDGE, JANE, LESLEY;GAFFNEY, PHILIP, MICHAEL |
分类号 |
H04L29/06;H04L29/08;(IPC1-7):H04L29/06 |
主分类号 |
H04L29/06 |
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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