发明名称 |
SICHERE VERTEILUNG VON INHALTEN MITHILFE VON SCHLÜSSELN ZUR ENSCHLÜSSELUNG |
摘要 |
For digital rights management (DRM) of e.g. digitally delivered music or video, a technique to make the decryption keys more secure. The technique fragments a message (song or video or other) into a number of portions, and uses a different decryption key for each portion. Each of the various keys is a function of the preceding key, in one version. In another version, each key is a function of a seed value and of the particular portion of the material with which the key is associated. |
申请公布号 |
AT524003(T) |
申请公布日期 |
2011.09.15 |
申请号 |
AT20080150990T |
申请日期 |
2008.02.01 |
申请人 |
APPLE INC. |
发明人 |
FARRUGIA, AUGUSTIN J.;FASOLI, GIANPAOLO;RIENDEAU, JEAN-FRANCOIS;SCHULTZ, ROD |
分类号 |
H04L29/06;H04L9/18;H04N7/167 |
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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