Synchronously generates a new random secret key of the given length. The type will determine which validations will be performed on the length.
length
type
const { generateKeySync,} = await import('node:crypto');const key = generateKeySync('hmac', { length: 512 });console.log(key.export().toString('hex')); // e89..........41e Copy
const { generateKeySync,} = await import('node:crypto');const key = generateKeySync('hmac', { length: 512 });console.log(key.export().toString('hex')); // e89..........41e
The size of a generated HMAC key should not exceed the block size of the underlying hash function. See createHmac for more information.
The intended use of the generated secret key. Currently accepted values are 'hmac' and 'aes'.
'hmac'
'aes'
v15.0.0
Synchronously generates a new random secret key of the given
length. Thetypewill determine which validations will be performed on thelength.The size of a generated HMAC key should not exceed the block size of the underlying hash function. See createHmac for more information.