Change search
ReferencesLink to record
Permanent link

Direct link
Key distribution in systems for selective access to information
KTH, School of Computer Science and Communication (CSC), Theoretical Computer Science, TCS.
2004 (English)Patent (Other (popular science, discussion, etc.))
Abstract [en]

A combination of stateless and state-full techniques enable reduced overall key management messages. A set of encryption keys is created based on a stateless subset cover scheme, where each user is associated with a leaf in the subset cover scheme. A state key and a corresponding state representing a subset of users that have the state key and a subset of users that do not have the state key is established, and a subset cover based on information representative of the established state is determined. Finally, a group key management message can be determined at least partly based on the calculated subset cover. The introduced state opens up for efficient subset cover calculation, reducing the size of the key management message.

Place, publisher, year, edition, pages
National Category
Computer Science
URN: urn:nbn:se:kth:diva-51068OAI: diva2:463336
US 7949135 (2011-05-24)

JP 4690420 (2011-06-01)

Available from: 2011-12-09 Created: 2011-12-09 Last updated: 2013-08-06Bibliographically approved

Open Access in DiVA

No full text

Other links


Search in DiVA

By author/editor
Kreitz, Gunnar
By organisation
Theoretical Computer Science, TCS
Computer Science

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Total: 21 hits
ReferencesLink to record
Permanent link

Direct link