Crypto.subtle

Secure context
This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.

The Crypto.subtle read-only property returns a SubtleCrypto which can then be used to perform low-level cryptographic operations.

Syntax

var crypto = crypto.subtle;

Value

A SubtleCrypto object you can use to interact with the Web Crypto API's low-level cryptography features.

Specifications

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

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
subtle
Experimental
Chrome Full support 37Edge Full support 12Firefox Full support 34
Full support 34
No support 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.
IE Partial support 11Opera Full support 24Safari Full support 10.1
Full support 10.1
Full support 7
Prefixed
Prefixed Implemented with the vendor prefix: webkit
WebView Android Full support 37Chrome Android Full support 37Firefox Android Full support 34
Full support 34
No support 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.
Opera Android Full support 24Safari iOS Full support 10.3
Full support 10.3
Full support 7
Prefixed
Prefixed Implemented with the vendor prefix: webkit
Samsung Internet Android Full support 3.0
Secure context requiredChrome Full support 60Edge Full support 79Firefox Full support 75IE No support NoOpera Full support 47Safari No support NoWebView Android Full support 60Chrome Android Full support 60Firefox Android No support NoOpera Android Full support 47Safari iOS No support NoSamsung Internet Android No support No

Legend

Full support  
Full support
Partial support  
Partial support
No support  
No support
Experimental. Expect behavior to change in the future.
Experimental. Expect behavior to change in the future.
User must explicitly enable this feature.
User must explicitly enable this feature.
Requires a vendor prefix or different name for use.
Requires a vendor prefix or different name for use.

See also