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generateKey
The generateKey() generates a new cryptographic key and returns it as a CryptoKey object that can be used with the Web Crypto API.
Usage
generateKey(algorithm, extractable, keyUsages)Parameters
| Name | Type | Description |
|---|---|---|
algorithm | string,AesKeyGenParams or HmacKeyGenParams | The type of key to generate. Can be either a string with any of the currently supported algorithms: AES-CBC, AES-GCM, AES-CTR, and HMAC as value, or any of the AesKeyGenParams or HmacKeyGenParams objects. |
extractable | boolean | Whether the key can be exported using exportKey. |
keyUsages | Array<string> | An array of strings describing what operations can be performed with the key. Currently supported usages include encrypt, decrypt, sign, and verify. |
Return Value
A Promise that resolves with the generated key as a CryptoKey object.
Throws
| Type | Description |
|---|---|
SyntaxError | Raised when the keyUsages parameter is empty but the key is of type secret or private. |
Example
import { crypto } from 'k6/experimental/webcrypto';
export default async function () {
const key = await crypto.subtle.generateKey(
{
name: 'AES-CBC',
length: 256,
},
true,
['encrypt', 'decrypt']
);
console.log(JSON.stringify(key));
}