{"id":160558,"date":"2010-12-22T00:00:00","date_gmt":"2010-12-22T00:00:00","guid":{"rendered":"https:\/\/www.microsoft.com\/en-us\/research\/msr-research-item\/revocation-for-delegatable-anonymous-credentials\/"},"modified":"2018-10-16T20:09:18","modified_gmt":"2018-10-17T03:09:18","slug":"revocation-for-delegatable-anonymous-credentials","status":"publish","type":"msr-research-item","link":"https:\/\/www.microsoft.com\/en-us\/research\/publication\/revocation-for-delegatable-anonymous-credentials\/","title":{"rendered":"Revocation for Delegatable Anonymous Credentials"},"content":{"rendered":"<div class=\"asset-content\">\n<p>This paper introduces and formalizes homomorphic proofs that allow `adding&#8217; proofs and proof statements to get a new proof of the `sum&#8217; statement. Additionally, we introduce a construction of homomorphic proofs, and show an accumulator scheme with delegatable non-membership proofs (ADNMP) as one of its applications with provable security. Finally, the proposed accumulator method extends the BCCKLS scheme to create a new provably secure revocable delegatable anonymous credential (RDAC) system. Intuitively, the new accumulator&#8217;s delegatable non-membership (NM) proofs enable user A, without revealing her identity, to delegate to user B the ability to prove that A&#8217;s identity is not included in a blacklist that can later be updated. The delegation is redelegatable, unlinkable, and verifiable.<\/p>\n<\/div>\n<p><!-- .asset-content --><\/p>\n","protected":false},"excerpt":{"rendered":"<p>This paper introduces and formalizes homomorphic proofs that allow `adding&#8217; proofs and proof statements to get a new proof of the `sum&#8217; statement. Additionally, we introduce a construction of homomorphic proofs, and show an accumulator scheme with delegatable non-membership proofs (ADNMP) as one of its applications with provable security. Finally, the proposed accumulator method extends [&hellip;]<\/p>\n","protected":false},"featured_media":0,"template":"","meta":{"msr-url-field":"","msr-podcast-episode":"","msrModifiedDate":"","msrModifiedDateEnabled":false,"ep_exclude_from_search":false,"footnotes":""},"msr-content-type":[3],"msr-research-highlight":[],"research-area":[13560],"msr-publication-type":[193718],"msr-product-type":[],"msr-focus-area":[],"msr-platform":[],"msr-download-source":[],"msr-locale":[268875],"msr-field-of-study":[],"msr-conference":[],"msr-journal":[],"msr-impact-theme":[],"msr-pillar":[],"class_list":["post-160558","msr-research-item","type-msr-research-item","status-publish","hentry","msr-research-area-programming-languages-software-engineering","msr-locale-en_us"],"msr_publishername":"","msr_edition":"International Association for Cryptologic 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