Encrypted Media Extensions

Navigator.requestMediaKeySystemAccess() provides access to MediaKeySystemAccess object that allows to query supported encryption mechanisms and other information about the system.

For example, visit https://www.fit.vutbr.cz/~polcak/jsr/hdcp/ and try a different browser or computer.

See also: https://w3c.github.io/encrypted-media/ See also: https://developer.mozilla.org/en-US/docs/Web/API/Navigator/requestMediaKeySystemAccess See also: https://developer.mozilla.org/en-US/docs/Web/API/MediaKeySystemAccess See also: https://developer.mozilla.org/en-US/docs/Web/API/MediaKeySystemAccess/getConfiguration

We provide two modes of protection:

  1. Strict approach prevents accessing the API.
  2. Farbling approach changes the output to a non-existing key system with 12.5% probability.

See this wrapper's technical docs and source code for more.