发明名称 |
Cryptographic Role-Based Access Control |
摘要 |
A hierarchical tree structure is used to facilitate the communication of encrypted keys to particular users having access to the tree. All users are in communication with a root node, but the information content of the material at the root node is decipherable only by the intended users of this information. Protected data is encrypted using a variety of data-keys specific to the data. These data-keys are encrypted using a combination of node-keys that are specific to particular users or groups of users. Users having access to the node-key associated with a particular encrypted data-key are able to decipher the data associated with the data-key; users without access to the particular node-key are unable to decrypt the data-key, and thus unable to decipher the data. The hierarchical tree is preferably structured based on a similarity of access rights among users, to minimize the overhead associated with providing user-specific access rights.
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申请公布号 |
US2008263370(A1) |
申请公布日期 |
2008.10.23 |
申请号 |
US20060067117 |
申请日期 |
2006.09.14 |
申请人 |
KONINKLIJKE PHILIPS ELECTRONICS, N.V. |
发明人 |
HAMMOUTENE MALIK;PETKOVIC MILAN;CONRADO CLAUDINE |
分类号 |
H04L9/32;H04L9/06 |
主分类号 |
H04L9/32 |
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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