{"id":160999,"date":"2011-03-06T00:00:00","date_gmt":"2011-03-06T00:00:00","guid":{"rendered":"https:\/\/cm-edgetun.pages.dev\/en-us\/research\/msr-research-item\/homomorphic-proofs-and-applications\/"},"modified":"2018-10-16T21:02:30","modified_gmt":"2018-10-17T04:02:30","slug":"homomorphic-proofs-and-applications","status":"publish","type":"msr-research-item","link":"https:\/\/cm-edgetun.pages.dev\/en-us\/research\/publication\/homomorphic-proofs-and-applications\/","title":{"rendered":"Homomorphic Proofs and Applications"},"content":{"rendered":"<div class=\"asset-content\">\n<p>This paper introduces and formalizes homomorphic proofs, which allow &#8216;adding&#8217; proofs and &#8216;adding&#8217; their statements to get a new proof of the &#8216;sum&#8217; statement. We propose a construction of homomorphic proofs and show one of its applications which is a new accumulator scheme with delegatable non-membership (NM) proofs. We use this accumulator in extending the BCCKLS scheme [3] to achieve a delegatable anonymous credential with revocation system. Informally, the accumulator&#8217;s delegatable 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 which could even be updated afterward. Moreover, the delegation should be redelegatable, unlinkable and verifiable. Security of the proposed schemes is provable. We implement a system for Revocation of Anonymous Credentials (RAC) that bases on the proposed accumulator. RAC could provide revocation for several anonymous credential systems.<\/p>\n<\/div>\n<p><!-- .asset-content --><\/p>\n","protected":false},"excerpt":{"rendered":"<p>This paper introduces and formalizes homomorphic proofs, which allow &#8216;adding&#8217; proofs and &#8216;adding&#8217; their statements to get a new proof of the &#8216;sum&#8217; statement. We propose a construction of homomorphic proofs and show one of its applications which is a new accumulator scheme with delegatable non-membership (NM) proofs. We use this accumulator in extending the [&hellip;]<\/p>\n","protected":false},"featured_media":0,"template":"","meta":{"msr-url-field":"","msr-podcast-episode":"","msrModifiedDate":"","msrModifiedDateEnabled":false,"ep_exclude_from_search":false,"_classifai_error":"","msr-author-ordering":[{"type":"user_nicename","value":"tolga","user_id":"34244"},{"type":"user_nicename","value":"languyen","user_id":"32619"}],"msr_publishername":"International Association for Cryptologic Research","msr_publisher_other":"","msr_booktitle":"Public Key Cryptography (PKC 2011)","msr_chapter":"","msr_edition":"Public Key Cryptography (PKC 2011)","msr_editors":"","msr_how_published":"","msr_isbn":"","msr_issue":"","msr_journal":"","msr_number":"","msr_organization":"","msr_pages_string":"","msr_page_range_start":"","msr_page_range_end":"","msr_series":"","msr_volume":"","msr_copyright":"","msr_conference_name":"Public Key Cryptography (PKC 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