{"id":265,"date":"2026-02-27T00:00:00","date_gmt":"2026-02-27T00:00:00","guid":{"rendered":"https:\/\/wordpress.securinsight.ca\/index.php\/2026\/02\/27\/radar-post-quantum-encryption-and-key-transparency-on-cloudflare-radar-4\/"},"modified":"2026-02-27T00:00:00","modified_gmt":"2026-02-27T00:00:00","slug":"radar-post-quantum-encryption-and-key-transparency-on-cloudflare-radar-4","status":"publish","type":"post","link":"https:\/\/wordpress.securinsight.ca\/index.php\/2026\/02\/27\/radar-post-quantum-encryption-and-key-transparency-on-cloudflare-radar-4\/","title":{"rendered":"Radar &#8211; Post-Quantum Encryption and Key Transparency on Cloudflare Radar"},"content":{"rendered":"<p><a href=\"https:\/\/developers.cloudflare.com\/radar\/\"><strong>Radar<\/strong><\/a> now tracks post-quantum encryption support on origin servers, provides a tool to test any host for post-quantum compatibility, and introduces a Key Transparency dashboard for monitoring end-to-end encrypted messaging audit logs.<\/p>\n<h4>Post-quantum origin support<\/h4>\n<p>The new <a href=\"https:\/\/developers.cloudflare.com\/api\/resources\/radar\/subresources\/post_quantum\/\"><code>Post-Quantum<\/code><\/a> API provides the following endpoints:<\/p>\n<ul>\n<li><a href=\"https:\/\/developers.cloudflare.com\/api\/resources\/radar\/subresources\/post_quantum\/subresources\/tls\/methods\/support\/\"><code>\/post_quantum\/tls\/support<\/code><\/a> &#8211; Tests whether a host supports post-quantum TLS key exchange.<\/li>\n<li><a href=\"https:\/\/developers.cloudflare.com\/api\/resources\/radar\/subresources\/post_quantum\/methods\/summary\/\"><code>\/post_quantum\/origin\/summary\/{dimension}<\/code><\/a> &#8211; Returns origin post-quantum data summarized by key agreement algorithm.<\/li>\n<li><a href=\"https:\/\/developers.cloudflare.com\/api\/resources\/radar\/subresources\/post_quantum\/methods\/timeseries_groups\/\"><code>\/post_quantum\/origin\/timeseries_groups\/{dimension}<\/code><\/a> &#8211; Returns origin post-quantum timeseries data grouped by key agreement algorithm.<\/li>\n<\/ul>\n<p>The new <a href=\"https:\/\/radar.cloudflare.com\/post-quantum\" target=\"_blank\">Post-Quantum Encryption<\/a> page shows the share of customer origins supporting <a href=\"https:\/\/developers.cloudflare.com\/ssl\/post-quantum-cryptography\/pqc-support\/#x25519mlkem768\">X25519MLKEM768<\/a>, derived from daily automated TLS scans of TLS 1.3-compatible origins. The scanner tests for algorithm support rather than the origin server&#8217;s configured preference.<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/developers.cloudflare.com\/_astro\/pq-origin-support.Bn5Dw_It_Z1QnTCX.webp\" alt=\"Screenshot of the origin post-quantum support graph on Radar\" \/><\/p>\n<p>A host test tool allows checking any publicly accessible website for post-quantum encryption compatibility. Enter a hostname and optional port to see whether the server negotiates a post-quantum key exchange algorithm.<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/developers.cloudflare.com\/_astro\/pq-host-test.dRqwoOvo_1gFdEb.webp\" alt=\"Screenshot of the post-quantum host test tool on Radar\" \/><\/p>\n<h4>Key Transparency<\/h4>\n<p>A new <a href=\"https:\/\/radar.cloudflare.com\/key-transparency\" target=\"_blank\">Key Transparency<\/a> section displays the audit status of Key Transparency logs for end-to-end encrypted messaging services. The page launches with two monitored logs: WhatsApp and Facebook Messenger Transport.<\/p>\n<p>Each log card shows the current status, last signed epoch, last verified epoch, and the root hash of the Auditable Key Directory tree. The data is also available through the <a href=\"https:\/\/developers.cloudflare.com\/key-transparency\/api\/\">Key Transparency Auditor API<\/a>.<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/developers.cloudflare.com\/_astro\/key-transparency-dashboard.DNQgLsb0_ZeBJ6q.webp\" alt=\"Screenshot of the Key Transparency dashboard on Radar\" \/><\/p>\n<p>Learn more about these features in our <a href=\"https:\/\/blog.cloudflare.com\/new-security-data-tools-radar\" target=\"_blank\">blog post<\/a> and check out the <a href=\"https:\/\/radar.cloudflare.com\/post-quantum\" target=\"_blank\">Post-Quantum Encryption<\/a> and <a href=\"https:\/\/radar.cloudflare.com\/key-transparency\" target=\"_blank\">Key Transparency<\/a> pages to explore the data.<\/p>","protected":false},"excerpt":{"rendered":"<p>Radar now tracks post-quantum encryption support on origin servers, provides a tool to test any host for post-quantum compatibility, and introduces a Key Transparency dashboard for monitoring end-to-end encrypted messaging audit logs. Post-quantum origin support The new Post-Quantum API provides the following endpoints: \/post_quantum\/tls\/support &#8211; Tests whether a host supports post-quantum TLS key exchange. \/post_quantum\/origin\/summary\/{dimension} [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-265","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/wordpress.securinsight.ca\/index.php\/wp-json\/wp\/v2\/posts\/265","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wordpress.securinsight.ca\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/wordpress.securinsight.ca\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/wordpress.securinsight.ca\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/wordpress.securinsight.ca\/index.php\/wp-json\/wp\/v2\/comments?post=265"}],"version-history":[{"count":0,"href":"https:\/\/wordpress.securinsight.ca\/index.php\/wp-json\/wp\/v2\/posts\/265\/revisions"}],"wp:attachment":[{"href":"https:\/\/wordpress.securinsight.ca\/index.php\/wp-json\/wp\/v2\/media?parent=265"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wordpress.securinsight.ca\/index.php\/wp-json\/wp\/v2\/categories?post=265"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wordpress.securinsight.ca\/index.php\/wp-json\/wp\/v2\/tags?post=265"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}