{"id":1831,"date":"2018-05-02T18:28:43","date_gmt":"2018-05-03T01:28:43","guid":{"rendered":"https:\/\/self-issued.info\/?p=1831"},"modified":"2018-05-02T18:28:43","modified_gmt":"2018-05-03T01:28:43","slug":"additional-rsa-algorithms-for-cose-messages-registered-by-w3c-webauthn","status":"publish","type":"post","link":"https:\/\/self-issued.info\/?p=1831","title":{"rendered":"Additional RSA Algorithms for COSE Messages Registered by W3C WebAuthn"},"content":{"rendered":"<p><span class=\"plain\"><a href=\"http:\/\/www.w3.org\/\"><img decoding=\"async\" align=\"right\" src=\"https:\/\/self-issued.info\/images\/w3c_home.png\" alt=\"W3C logo\" \/><\/a><\/span>The <a href=\"https:\/\/www.w3.org\/blog\/webauthn\/\">WebAuthn working group<\/a> has published the &#8220;COSE Algorithms for Web Authentication (WebAuthn)&#8221; specification, which registers COSE algorithm identifiers for RSASSA-PKCS1-v1_5 signature algorithms with SHA-2 and SHA-1 hash algorithms.  RSASSA-PKCS1-v1_5 with SHA-256 is used by several kinds of authenticators.  RSASSA-PKCS1-v1_5 with SHA-1, while deprecated, is used by some Trusted Platform Modules (TPMs).  See <a href=\"https:\/\/www.iana.org\/assignments\/cose\/cose.xhtml#algorithms\">https:\/\/www.iana.org\/assignments\/cose\/cose.xhtml#algorithms<\/a> for the actual IANA registrations.<\/p>\n<p>Thanks to John Fontana, Jeff Hodges, Tony Nadalin, Jim Schaad, G\u00c3\u0192\u00c2\u00b6ran Selander, Wendy Seltzer, Sean Turner, and Samuel Weiler for their roles in registering these algorithm identifiers.<\/p>\n<p>The specification is available at:<\/p>\n<ul>\n<li><a href=\"https:\/\/tools.ietf.org\/html\/draft-jones-webauthn-cose-algorithms-01\">https:\/\/tools.ietf.org\/html\/draft-jones-webauthn-cose-algorithms-01<\/a><\/li>\n<\/ul>\n<p>An HTML-formatted version is also available at:<\/p>\n<ul>\n<li><a href=\"https:\/\/self-issued.info\/docs\/draft-jones-webauthn-cose-algorithms-01.html\">https:\/\/self-issued.info\/docs\/draft-jones-webauthn-cose-algorithms-01.html<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>The WebAuthn working group has published the &#8220;COSE Algorithms for Web Authentication (WebAuthn)&#8221; specification, which registers COSE algorithm identifiers for RSASSA-PKCS1-v1_5 signature algorithms with SHA-2 and SHA-1 hash algorithms. RSASSA-PKCS1-v1_5 with SHA-256 is used by several kinds of authenticators. RSASSA-PKCS1-v1_5 with SHA-1, while deprecated, is used by some Trusted Platform Modules (TPMs). See https:\/\/www.iana.org\/assignments\/cose\/cose.xhtml#algorithms for [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[29,28,32,25,33],"tags":[],"class_list":["post-1831","post","type-post","status-publish","format-standard","hentry","category-cbor","category-cryptography","category-ietf","category-specifications","category-w3c"],"_links":{"self":[{"href":"https:\/\/self-issued.info\/index.php?rest_route=\/wp\/v2\/posts\/1831","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/self-issued.info\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/self-issued.info\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/self-issued.info\/index.php?rest_route=\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/self-issued.info\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1831"}],"version-history":[{"count":2,"href":"https:\/\/self-issued.info\/index.php?rest_route=\/wp\/v2\/posts\/1831\/revisions"}],"predecessor-version":[{"id":1833,"href":"https:\/\/self-issued.info\/index.php?rest_route=\/wp\/v2\/posts\/1831\/revisions\/1833"}],"wp:attachment":[{"href":"https:\/\/self-issued.info\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1831"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/self-issued.info\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1831"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/self-issued.info\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1831"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}