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Crypto

The Crypto interface represents basic cryptography features available in the current context. It allows access to a cryptographically strong random number generator and to cryptographic primitives.

An object with this interface is available on Web context via the Window.crypto property.

Properties

This interface implements properties defined on RandomSource.

Crypto.subtle Read only: Returns a SubtleCrypto object providing access to common cryptographic primitives, like hashing, signing, encryption or decryption.

Methods

This interface implements methods defined on RandomSource.

Crypto.getRandomValues(): Fills the passed TypedArray with cryptographically sound random values.

Specifications

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

Browser CompatibilityUpdate compatibility data on GitHub

	Desktop
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari
Basic support	11	12	26	11	15	6.1
`subtle`	37	12	34 34 32 — 34 Disabled Disabled From version 32 until version 34 (exclusive): this feature is behind the `dom.webcrypto.enabled` preference (needs to be set to `true`). To change preferences in Firefox, visit about:config.	11	24	10.1 10.1 7 Prefixed Prefixed Requires the vendor prefix: webkit
`getRandomValues`	11	12	26	11	15	4

	Mobile
	Android webview	Chrome for Android	Edge Mobile	Firefox for Android	Opera for Android	iOS Safari	Samsung Internet
Basic support	Yes	18	12	26	14	6.1	Yes
`subtle`	37	37	12	34 34 32 — 34 Disabled Disabled From version 32 until version 34 (exclusive): this feature is behind the `dom.webcrypto.enabled` preference (needs to be set to `true`). To change preferences in Firefox, visit about:config.	24	10.1 10.1 7 Prefixed Prefixed Requires the vendor prefix: webkit	Yes
`getRandomValues`	Yes	18	12	26	14	4	Yes

Crypto

Properties

Methods

Specifications

Browser CompatibilityUpdate compatibility data on GitHub

See Also