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Documentation

Grafana k6

importKey

Open source

importKey

The importKey() imports a key from an external, portable format, and gives you a CryptoKey object that can be used with the Web Crypto API.

Usage

importKey(format, keyData, algorithm, extractable, keyUsages)

Parameters

Name	Type	Description
`format`	`string`	Defines the data format of the key to import. Currently supported formats: `raw`.
`keyData`	`ArrayBuffer`, `TypedArray` or `DataView`	the data to import the key from.
`algorithm`	a `string` or object with a single `name` string property	The algorithm to use to import the key. Currently supported algorithms: `AES-CBC`, `AES-GCM`, `AES-CTR`, and `HMAC`.
`extractable`	`boolean`	Indicates whether it will be possible to export the key 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 imported 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`.
`TypeError`	Raised when trying to use an invalid format, or if the `keyData` is not suited for that format.

Example

import { crypto } from 'k6/experimental/webcrypto';

export default async function () {
  /**
   * Generate a symmetric key using the AES-CBC algorithm.
   */
  const generatedKey = await crypto.subtle.generateKey(
    {
      name: 'AES-CBC',
      length: '256',
    },
    true,
    ['encrypt', 'decrypt']
  );

  /**
   * Export the key in raw format.
   */
  const exportedKey = await crypto.subtle.exportKey('raw', generatedKey);

  /**
   * Reimport the key in raw format to verfiy its integrity.
   */
  const importedKey = await crypto.subtle.importKey('raw', exportedKey, 'AES-CBC', true, [
    'encrypt',
    'decrypt',
  ]);

  console.log(JSON.stringify(importedKey));
}