Method of Key Management

A. Zych (Inventor), J.M. Doumen (Inventor), Willem Jonker (Inventor), Pieter H. Hartel (Inventor), M. Petkovic (Inventor)

Research output: Patent

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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 languageEnglish
Patent numberWO2008026184
Priority date6/03/08
Publication statusPublished - 6 Mar 2008


  • SCS-Cybersecurity


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