{"id":3079,"date":"2018-07-27T07:57:06","date_gmt":"2018-07-27T07:57:06","guid":{"rendered":"https:\/\/prismacloud.eu\/?p=3079"},"modified":"2018-07-27T07:57:06","modified_gmt":"2018-07-27T07:57:06","slug":"chqs-publicly-verifiable-homomorphic-signatures-beyond-the-linear-case","status":"publish","type":"post","link":"https:\/\/prismacloud.eu\/chqs-publicly-verifiable-homomorphic-signatures-beyond-the-linear-case\/","title":{"rendered":"CHQS: Publicly Verifiable Homomorphic Signatures Beyond the Linear Case"},"content":{"rendered":"<p><strong>Title<\/strong><\/p>\n<p>CHQS: Publicly Verifiable Homomorphic Signatures Beyond the Linear Case<\/p>\n<p><strong>Authors<\/strong><\/p>\n<p>Lucas Schabh\u00fcser, Denis Butin, Johannes Buchmann<\/p>\n<p><strong>Abstract<\/strong><\/p>\n<p>Sensitive data is often outsourced to cloud servers, with the server performing computation on the data. Computational correctness must be efficiently verifiable by a third party while the input data remains confidential. This paper introduces CHQS, a homomorphic signature scheme from bilinear groups fulfilling these requirements. CHQS is the first such scheme to be both context hiding and publicly verifiable for arithmetic circuits of degree two. It also achieves amortized efficiency: after a precomputation, verification can be faster than the evaluation of the circuit itself.<\/p>\n<p><strong>Venue<\/strong><\/p>\n<p>ISPEC 2018<\/p>\n<p><strong>Place and Date<\/strong><\/p>\n<p>Tokyo, Japan, Sep 25-27, 2018<\/p>\n<p>[<a href=\"https:\/\/eprint.iacr.org\/2018\/599\">Download<\/a>]<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Title CHQS: Publicly Verifiable Homomorphic Signatures Beyond the Linear Case Authors Lucas Schabh\u00fcser, Denis Butin, Johannes Buchmann Abstract Sensitive data is often outsourced to cloud servers, with the server performing computation on the data. Computational correctness must be efficiently verifiable by a third party while the input data remains confidential. This paper introduces CHQS, a [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":1575,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7,8],"tags":[],"_links":{"self":[{"href":"https:\/\/prismacloud.eu\/wp-json\/wp\/v2\/posts\/3079"}],"collection":[{"href":"https:\/\/prismacloud.eu\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prismacloud.eu\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prismacloud.eu\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/prismacloud.eu\/wp-json\/wp\/v2\/comments?post=3079"}],"version-history":[{"count":2,"href":"https:\/\/prismacloud.eu\/wp-json\/wp\/v2\/posts\/3079\/revisions"}],"predecessor-version":[{"id":3086,"href":"https:\/\/prismacloud.eu\/wp-json\/wp\/v2\/posts\/3079\/revisions\/3086"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/prismacloud.eu\/wp-json\/wp\/v2\/media\/1575"}],"wp:attachment":[{"href":"https:\/\/prismacloud.eu\/wp-json\/wp\/v2\/media?parent=3079"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prismacloud.eu\/wp-json\/wp\/v2\/categories?post=3079"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prismacloud.eu\/wp-json\/wp\/v2\/tags?post=3079"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}