enum KeyType { "public", "private", "secret" };

enum KeyUsage { "encrypt", "decrypt", "sign", "verify", "deriveKey", "deriveBits", "wrapKey", "unwrapKey" };

// https://w3c.github.io/webcrypto/#cryptokey-interface
[SecureContext,Exposed=(Window,Worker),Serializable]
interface CryptoKey {
    readonly attribute KeyType type;
    readonly attribute boolean extractable;
    readonly attribute object algorithm;
    readonly attribute object usages;
};