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".

Examples

The examples for SubtleCrypto methods often use CryptoKey objects. For example:

• SubtleCrypto.generateKey()
• SubtleCrypto.deriveKey()
• SubtleCrypto.importKey()
• SubtleCrypto.exportKey()
• SubtleCrypto.wrapKey()
• SubtleCrypto.unwrapKey()
• SubtleCrypto.encrypt()
• SubtleCrypto.decrypt()
• SubtleCrypto.sign()
• SubtleCrypto.verify()

Specifications

Browser compatibility

See also

• Web Crypto API
• Web security
• Privacy, permissions, and information security
• Crypto and Crypto.subtle.