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CryptoKey

The CryptoKey interface represents a cryptographic key derived from a specific key algorithm.

A CryptoKey object can be obtained using SubtleCrypto.generateKey(), SubtleCrypto.deriveKey() or SubtleCrypto.importKey()

Properties

This interface doesn't inherit any property.

CryptoKey.type
Returns an enumerated value representing the type of the key, a secret key (for symmetric algorithm), a public or a private key (for an asymmetric algorithm)
CryptoKey.extractable
Returns a Boolean indicating if the raw information may be exported to the application or not.
CryptoKey.algorithm
Returns an opaque object representing a particular cipher the key has to be used with.
CryptoKey.usages
Returns an array of enumerated values indicating what the key can be used for.

Methods

This interface neither inherits, nor implements, any method.

Specifications

Specification Status Comment
Web Cryptography API
The definition of 'CryptoKey' in that specification.		 Recommendation Initial definition.

Browser compatibilityUpdate compatibility data on GitHub

Desktop
Chrome Edge Firefox Internet Explorer Opera Safari
Basic support 37 Yes 34 No ? No
type 37 12 34 No ? No
extractable 37 12 34 No ? No
algorithm 37 12 34 No ? No
usages 37 12 34 No ? No
Mobile
Android webview Chrome for Android Edge Mobile Firefox for Android Opera for Android iOS Safari Samsung Internet
Basic support 37 37 Yes 34 ? No Yes
type 37 37 Yes 34 ? No Yes
extractable 37 37 Yes 34 ? No Yes
algorithm 37 37 Yes 34 ? No Yes
usages 37 37 Yes 34 ? No Yes

See also

Edit this page on MDN

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Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/CryptoKey