Thecrypto read-only property of theWorkerGlobalScope interface returns theCrypto object for this worker. This object gives workers access to certain cryptographic related services.

Although the property itself is read-only, all of its methods (and the methods of itschild object,SubtleCrypto) are not read-only, and therefore vulnerableto attack bypolyfill.

Althoughcrypto is available on all workers, the returnedCrypto object only has one usable feature in insecure contexts: thegetRandomValues() method. In general, you should use this API only in secure contexts.

Value

An instance of theCrypto interface, providing access to general-purpose cryptography and a strong random-number generator.

Examples

See the example on the page forWindow.crypto, which uses thecrypto property to access thegetRandomValues() method.

Specifications

Browser compatibility

See also

• TheCrypto interface
• Window.crypto