ConCert: Content Revocation Using Certificates

Pöhls, Henrich C.

ConCert: Content Revocation Using Certificates

dc.contributor.author	Pöhls, Henrich C.
dc.contributor.editor	Alkassar, Ammar
dc.contributor.editor	Siekmann, Jörg
dc.date.accessioned	2019-04-03T13:29:08Z
dc.date.available	2019-04-03T13:29:08Z
dc.date.issued	2008
dc.description.abstract	Content reuse on the Web is becoming even more common since the Web 2.0 “phenomenon”. However, each time content is reused certain information is either completely lost (for example through excerpts) or gets harder to verify. This reduces the content’s quality and thus the content’s value for viewers. Among the lost infor- mation are origin, author, creation time, or if the author still endorses the content. We propose preserving this information in a cryptographically protected content certificate (ConCert). This X.509 compatible certificate binds the content to the author’s public-key. Using a hash tree we allow viewers to verify the properties, even if parts from the original content have been omitted before re-publication. The author can indicate which parts can be omitted during certificate generation in a policy. Furthermore, the author can indicate a change in his consent to the content itself or to its re-publication by revoking the content’s certificate.	en
dc.identifier.isbn	978-3-88579-222-2
dc.identifier.pissn	1617-5468
dc.identifier.uri	https://dl.gi.de/handle/20.500.12116/21473
dc.language.iso	en
dc.publisher	Gesellschaft für Informatik e. V.
dc.relation.ispartof	SICHERHEIT 2008 – Sicherheit, Schutz und Zuverlässigkeit. Beiträge der 4. Jahrestagung des Fachbereichs Sicherheit der Gesellschaft für Informatik e.V. (GI)
dc.relation.ispartofseries	Lecture Notes in Informatics (LNI) - Proceedings, Volume P-128
dc.title	ConCert: Content Revocation Using Certificates	en
dc.type	Text/Conference Paper
gi.citation.endPage	162
gi.citation.publisherPlace	Bonn
gi.citation.startPage	149
gi.conference.date	2.- 4. April 2008
gi.conference.location	Saarbrücken
gi.conference.sessiontitle	Regular Research Papers

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P128 - Sicherheit 2008 – Sicherheit, Schutz und Zuverlässigkeit. Beiträge der 4. Jahrestagung des Fachbereichs Sicherheit der Gesellschaft für Informatik e.V. (GI)