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
});
The size of a generated HMAC key should not exceed the block size of the underlying hash function. See createHmac for more information.