Abstract
The invention relates to a method of key management for group-based controlled access to encrypted data, in which a decryption key for the encrypted data can be obtained by a party if the party is a member of at least one group which is authorized to access the data, the groups being organized in a hierarchical tree in which each non-leaf node represents a group and each leaf node represents a member of all groups represented by nodes hierarchically superior to the leaf node in question.
Original language | English |
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Patent number | PH006387, WO-IB2007/053498, EP-06119878.4 |
IPC | H04L 9/08 |
Priority date | 31/08/06 |
Filing date | 30/08/07 |
Publication status | Submitted - 31 Aug 2006 |
Keywords
- SCS-Cybersecurity