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()


This interface doesn't inherit any property.

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)
Returns a Boolean indicating if the raw information may be exported to the application or not.
Returns an opaque object representing a particular cipher the key has to be used with.
Returns an array of enumerated values indicating what the key can be used for.


This interface neither inherits, nor implements, any method.


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

Browser compatibilityUpdate compatibility data on GitHub

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
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

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