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 in secure contexts (HTTPS), in some or all supporting browsers.

Note: This feature is available in Web Workers.

The CryptoKey interface of the Web Crypto API represents a cryptographic key obtained from one of the SubtleCrypto methods generateKey(), deriveKey(), importKey(), or unwrapKey().

For security reasons, the CryptoKey interface can only be used in a secure context.

Instance properties

CryptoKey.type Read only: The type of key the object represents. It may take one of the following values: "secret", "private" or "public".
CryptoKey.extractable Read only: A boolean value indicating whether or not the key may be extracted using SubtleCrypto.exportKey() or SubtleCrypto.wrapKey().
CryptoKey.algorithm Read only: An object describing the algorithm for which this key can be used and any associated extra parameters.
CryptoKey.usages Read only: An Array 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".