{"id":1988,"date":"2015-07-02T02:48:10","date_gmt":"2015-07-02T09:48:10","guid":{"rendered":"https:\/\/blog.mozilla.org\/security\/?p=1988"},"modified":"2016-10-03T17:13:56","modified_gmt":"2016-10-04T00:13:56","slug":"mitigating-logjam-enforcing-stronger-diffie-hellman-key-exchange","status":"publish","type":"post","link":"https:\/\/blog.mozilla.org\/security\/2015\/07\/02\/mitigating-logjam-enforcing-stronger-diffie-hellman-key-exchange\/","title":{"rendered":"Mitigating Logjam: Enforcing Stronger Diffie-Hellman Key Exchange"},"content":{"rendered":"<p>In response to recent developments attacking Diffie-Hellman key exchange (<a href=\"https:\/\/weakdh.org\/\">https:\/\/weakdh.org\/<\/a>) and to protect the privacy of Firefox users, we have increased the minimum key size for TLS handshakes using Diffie-Hellman key exchange to 1023 bits. A small number of servers are not configured to use strong enough keys. If a user attempts to connect to such a server, they will encounter the error &#8220;ssl_error_weak_server_ephemeral_dh_key&#8221;.<\/p>\n<p><em><strong>Update 2016-10-03:<\/strong> this was accidentally re-published on September 30, 2016. There has been no change to the minimum accepted Diffie-Hellman key size since this mid-2015 announcement.<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>In response to recent developments attacking Diffie-Hellman key exchange (https:\/\/weakdh.org\/) and to protect the privacy of Firefox users, we have increased the minimum key size for TLS handshakes using Diffie-Hellman &hellip; <a class=\"go\" href=\"https:\/\/blog.mozilla.org\/security\/2015\/07\/02\/mitigating-logjam-enforcing-stronger-diffie-hellman-key-exchange\/\">Read more<\/a><\/p>\n","protected":false},"author":525,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[69,45499],"tags":[],"coauthors":[45543],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Mitigating Logjam: Enforcing Stronger Diffie-Hellman Key Exchange - Mozilla Security Blog<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/blog.mozilla.org\/security\/2015\/07\/02\/mitigating-logjam-enforcing-stronger-diffie-hellman-key-exchange\/\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Dana Keeler\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/blog.mozilla.org\/security\/2015\/07\/02\/mitigating-logjam-enforcing-stronger-diffie-hellman-key-exchange\/\",\"url\":\"https:\/\/blog.mozilla.org\/security\/2015\/07\/02\/mitigating-logjam-enforcing-stronger-diffie-hellman-key-exchange\/\",\"name\":\"Mitigating Logjam: Enforcing Stronger Diffie-Hellman Key Exchange - 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