generateKey
external fun generateKey( type: GenerateKeyType, options: GenerateKeyOptions, callback: (<Error class: unknown class>?, key: KeyObject) -> Unit)(source)
Asynchronously generates a new random secret key of the given length. The type will determine which validations will be performed on the length.
const {
generateKey,
} = await import('node:crypto');
generateKey('hmac', { length: 512 }, (err, key) => {
if (err) throw err;
console.log(key.export().toString('hex')); // 46e..........620
});Content copied to clipboard
The size of a generated HMAC key should not exceed the block size of the underlying hash function. See {@link createHmac} for more information.
Since
v15.0.0
Parameters
type
The intended use of the generated secret key. Currently accepted values are 'hmac' and 'aes'.