{"id":491,"date":"2015-06-19T14:20:38","date_gmt":"2015-06-19T14:20:38","guid":{"rendered":"https:\/\/prismacloud.eu\/?p=491"},"modified":"2017-05-22T12:18:38","modified_gmt":"2017-05-22T12:18:38","slug":"accountable-redactable-signatures","status":"publish","type":"post","link":"https:\/\/prismacloud.eu\/accountable-redactable-signatures\/","title":{"rendered":"Accountable Redactable Signatures"},"content":{"rendered":"<p><strong>Authors<\/strong><\/p>\n<p>Henrich C. P\u00f6hls (University of Passau) and Kai Samelin (IBM Research Zurich and Technical University of Darmstadt)<\/p>\n<p><strong>Abstract<\/strong><\/p>\n<p>Redactable signature schemes (RSS) allow removing\u00a0blocks from signed data. State-of-the-art schemes have public\u00a0redactions, i.e., any party can remove parts from a signed\u00a0message. This prohibits meaningful definitions of accountability.\u00a0We address this gap by introducing the notion of accountable\u00a0redactable signature schemes (ARSS). We present a generic\u00a0construction which couples a sanitizable signature scheme (SSS)\u00a0to profit from its accountability with an RSS to maintain the\u00a0reduced malleability of RSSs. Depending on the building blocks,\u00a0the resulting scheme offers transparency or public accountability.\u00a0Transparency provides stronger privacy guarantees, while public\u00a0accountability meets legal and application requirements.<\/p>\n<p><strong>Venue<\/strong><\/p>\n<p>10th International Conference on Availability, Reliability and Security,\u00a0ARES 2015 (<a href=\"http:\/\/www.ares-conference.eu\/conference\/\">http:\/\/www.ares-conference.eu\/conference\/<\/a>)<\/p>\n<p><strong>Place and Date<\/strong><\/p>\n<p>Universit\u00e9 Paul Sabatier, Toulouse, France, August 24th \u2013 28th, 2015<\/p>\n<p><strong>Publication Reference<\/strong><\/p>\n<p>Henrich C. P\u00f6hls and Kai Samelin, \"Accountable Redactable Signatures \"10th International Conference on Availability, Reliability and Security,\u00a0ARES 2015, IEEE, Toulouse, France, August 24\u201328, 2015.<\/p>\n<p>[<a href=\"http:\/\/ieeexplore.ieee.org\/stamp\/stamp.jsp?arnumber=7299899\">Download<\/a>]<\/p>\n<p><strong>Bibtex<\/strong><\/p>\n<pre>@inproceedings{poehls_ars_2015,\r\n   Author\u00a0\u00a0\u00a0 = {Henrich C. P{\\\"o}hls and Kai Samelin},\r\n   Title\u00a0\u00a0\u00a0\u00a0 = {{Accountable Redactable Signatures}},\r\n   Booktitle = {2015 International Conference on Availability,\u00a0Reliability and Security, {ARES} 2015, Toulouse, France, August 24\u201328,\u00a02015.},\r\n   Year\u00a0\u00a0\u00a0 \u00a0\u00a0= {2015},\r\n   Publisher\u00a0= {{IEEE} Computer Society}\r\n}<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>Henrich C. P\u00f6hls and Kai Samelin, \"Accountable Redactable Signatures \"10th International Conference on Availability, Reliability and Security, ARES 2015, IEEE, Toulouse, France, August 24\u201328, 2015.<\/p>\n","protected":false},"author":2,"featured_media":746,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[],"_links":{"self":[{"href":"https:\/\/prismacloud.eu\/wp-json\/wp\/v2\/posts\/491"}],"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=491"}],"version-history":[{"count":9,"href":"https:\/\/prismacloud.eu\/wp-json\/wp\/v2\/posts\/491\/revisions"}],"predecessor-version":[{"id":1914,"href":"https:\/\/prismacloud.eu\/wp-json\/wp\/v2\/posts\/491\/revisions\/1914"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/prismacloud.eu\/wp-json\/wp\/v2\/media\/746"}],"wp:attachment":[{"href":"https:\/\/prismacloud.eu\/wp-json\/wp\/v2\/media?parent=491"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prismacloud.eu\/wp-json\/wp\/v2\/categories?post=491"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prismacloud.eu\/wp-json\/wp\/v2\/tags?post=491"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}