Namecoin can be used for TLS certificate validation. This page covers Namecoin’s compatibility with various TLS implementations.

TLS Validation Library Compatibility

  Positive Overrides Negative Overrides Strict Transport Security
Chromium (all OS’s) Not supported. Supported via tlsrestrict_chromium_tool. Not supported.
CryptoAPI (Windows) Supported via ncdns’s certinject feature. Supported via certinject and name constraints property. Not supported.
mozilla::pkix/NSS/sqlite (OS’s with NSS certutil) Supported via ncdns’s tlsoverridefirefox feature. Supported via tlsrestrict_nss_tool. Not supported.
mozilla::pkix/NSS/sqlite (OS’s without NSS certutil) Supported via ncdns’s tlsoverridefirefox feature. Not supported. Not supported.
mozilla::pkix/NSS/BDB Supported via ncdns’s tlsoverridefirefox feature. Not supported. Not supported.
mozilla::pkix/NSS/PKCS#11 Supported via ncp11. Supported via ncp11. Not supported.
NSS/sqlite (OS’s with NSS certutil) Supported via ncdns’s certinject feature. Supported via tlsrestrict_nss_tool. Not supported.
WebExtensions (Asynchronous WebRequest) Not supported. Not supported. Supported via DNSSEC-HSTS with Native Messaging.
WebExtensions (Synchronous WebRequest) Not supported. Not supported. Supported via DNSSEC-HSTS with HTTP API.

TLS Application Compatibility

  Positive Overrides Negative Overrides Strict Transport Security
Chromium (GNU/Linux)
Instructions		 Supported via NSS/sqlite. Supported via Chromium.
Supported via NSS/sqlite.		 Supported via WebExtensions (Synchronous WebRequest).
Chromium (Windows)
Automatically enabled by installer		 Supported via CryptoAPI. Supported via CryptoAPI. Not supported.
Firefox (GNU/Linux)
Instructions		 Supported via mozilla::pkix/NSS/sqlite. Supported via mozilla::pkix/NSS/sqlite. Supported via WebExtensions (Asynchronous WebRequest).
Firefox (Windows)
Instructions		 Supported via mozilla::pkix/NSS/sqlite. Supported via mozilla::pkix/NSS/sqlite. Not supported.
Google Chrome (GNU/Linux)
Instructions		 Supported via NSS/sqlite. Supported via Chromium.
Supported via NSS/sqlite.		 Not supported.
Google Chrome (Windows)
Automatically enabled by installer		 Supported via CryptoAPI. Supported via CryptoAPI. Not supported.
Google Chrome Canary (GNU/Linux) Supported via NSS/sqlite. Supported via Chromium.
Supported via NSS/sqlite.		 Not supported.
Google Chrome Canary (Windows)
Automatically enabled by installer		 Supported via CryptoAPI. Supported via CryptoAPI. Not supported.
Opera (GNU/Linux) Supported via NSS/sqlite. Supported via Chromium.
Supported via NSS/sqlite.		 Not supported.
Opera (Windows)
Automatically enabled by installer		 Supported via CryptoAPI. Supported via CryptoAPI. Not supported.
Tor Browser (GNU/Linux)
Instructions		 Supported via mozilla::pkix/NSS/PKCS#11. Supported via mozilla::pkix/NSS/PKCS#11. Supported via WebExtensions (Asynchronous WebRequest).
Tor Browser (macOS)
Instructions		 Supported via mozilla::pkix/NSS/PKCS#11.
Untested		 Supported via mozilla::pkix/NSS/PKCS#11.
Untested		 Not supported.
Tor Browser (Windows)
Instructions		 Supported via mozilla::pkix/NSS/PKCS#11. Supported via mozilla::pkix/NSS/PKCS#11. Not supported.