CryptoKey

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since ⁨July 2015⁩.

Secure context: This feature is available only insecure contexts (HTTPS), in some or allsupporting browsers.

Note: This feature is available inWeb Workers.

TheCryptoKey interface of theWeb Crypto API represents a cryptographickey obtained from one of theSubtleCrypto methodsgenerateKey(),deriveKey(),importKey(), orunwrapKey().

For security reasons, theCryptoKey interface can only be used in asecure context.

Instance properties

CryptoKey.typeRead only: The type of key the object represents. It may take one of the following values:"secret","private" or"public".
CryptoKey.extractableRead only: A boolean value indicating whether or not the key may be extracted usingSubtleCrypto.exportKey() orSubtleCrypto.wrapKey().
CryptoKey.algorithmRead only: An object describing the algorithm for which this key can be used and any associated extra parameters.
CryptoKey.usagesRead only: AnArray of strings, indicating what can be done with the key. Possible values for array elements are"encrypt","decrypt","sign","verify","deriveKey","deriveBits","wrapKey", and"unwrapKey".