generateKey - node__crypto.d.ts - Node

function generateKey

Usage in Deno

```typescript import { generateKey } from "node:node__crypto.d.ts"; ```



generateKey(type: "hmac" | "aes",
options: { length: number;  },
callback: (err: Error | null,
key: KeyObject,
) => void,
): void

Asynchronously generates a new random secret key of the given `length`. The `type` will determine which validations will be performed on the `length`. ```js const { generateKey, } = await import('node:crypto'); generateKey('hmac', { length: 512 }, (err, key) => { if (err) throw err; console.log(key.export().toString('hex')); // 46e..........620 }); ``` The size of a generated HMAC key should not exceed the block size of the underlying hash function. See [createHmac](../.././node__crypto.d.ts/~/createHmac) for more information.

Parameters



type: "hmac" | "aes"

The intended use of the generated secret key. Currently accepted values are `'hmac'` and `'aes'`.



options: { length: number;  }



callback: (err: Error | null,
key: KeyObject,
) => void

Return Type

void