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MediaKeySession

This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The MediaKeySession interface of the EncryptedMediaExtensions API represents a context for message exchange with a content decryption module (CDM).

Properties

MediaKeySession.closed Read only
Returns a Promise signaling when a MediaKeySession closes. This promise can only be fulfilled and is never rejected. Closing a session means that licenses and keys associated with it are no longer valid for decrypting media data.
MediaKeySession.expiration Read only
The time after which the keys in the current session can no longer be used to decrypt media data, or NaN if no such time exists. This value is determined by the CDM and measured in milliseconds since January 1, 1970, UTC. This value may change during a session lifetime, such as when an action triggers the start of a window.
MediaKeySession.keyStatuses Read only
Contains a reference to a read-only MediaKeyStatusMap of the current session's keys and their statuses.
MediaKeySession.sessionId Read only
Contains a unique string generated by the CDM for the current media object and its associated keys or licenses.

Event handlers

MediaKeySession.onkeystatuseschange
Sets the EventHandler called when there has been a change in the keys in a session or their statuses.
MediaKeySession.onmessage
Sets the EventHandler called when the content decryption module has generated a message for the session.

Methods

MediaKeySession.close()

Returns a Promise after notifying the current media session is no longer needed and that the CDM should release any resources associated with this object and close it.

MediaKeySession.generateRequest()
Returns a Promise after generating a media request based on initialization data.
MediaKeySession.load()
Returns a Promise that resolves to a boolean value after loading data for a specified session object.
MediaKeySession.remove()
Returns a Promise after removing any session data associated with the current object.
MediaKeySession.update()
Returns a Promise after loading messages and licenses to the CDM.

Examples

// TBD

Specifications

Specification Status Comment
Encrypted Media Extensions
The definition of 'MediaKeySession' in that specification.		 Recommendation Initial definition.

Browser compatibilityUpdate compatibility data on GitHub

Desktop
Chrome Edge Firefox Internet Explorer Opera Safari
Basic support 42 Yes ? ? Yes ?
closed 42 13 ? ? Yes ?
expiration 42 13 ? ? Yes ?
keyStatuses 42 13 ? ? Yes ?
sessionId 42 13 ? ? Yes ?
onkeystatuseschange 55 ? ? ? 42 ?
onmessage 55 ? ? ? 42 ?
close 42 13 ? ? Yes ?
generateRequest 42 13 ? ? Yes ?
load 42 13 ? ? Yes ?
remove 42 13 ? ? Yes ?
update 42 13 ? ? Yes ?
Mobile
Android webview Chrome for Android Edge Mobile Firefox for Android Opera for Android iOS Safari Samsung Internet
Basic support 43 42 Yes ? Yes ? 4.0
closed 43 42 Yes ? Yes ? 4.0
expiration 43 42 Yes ? Yes ? 4.0
keyStatuses 43 42 Yes ? Yes ? 4.0
sessionId 43 42 Yes ? Yes ? 4.0
onkeystatuseschange 43 55 Yes ? 42 ? 6.0
onmessage 43 55 Yes ? 42 ? 6.0
close 43 42 Yes ? Yes ? 4.0
generateRequest 43 42 Yes ? Yes ? 4.0
load 43 42 Yes ? Yes ? 4.0
remove 43 42 Yes ? Yes ? 4.0
update 43 42 Yes ? Yes ? 4.0

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https://developer.mozilla.org/en-US/docs/Web/API/MediaKeySession