createPublicKey
Creates and returns a new key object containing a public key. If key
is a string or Buffer
, format
is assumed to be 'pem'
; if key
is a KeyObject
with type 'private'
, the public key is derived from the given private key; otherwise, key
must be an object with the properties described above.
If the format is 'pem'
, the 'key'
may also be an X.509 certificate.
Because public keys can be derived from private keys, a private key may be passed instead of a public key. In that case, this function behaves as if {@link createPrivateKey} had been called, except that the type of the returned KeyObject
will be 'public'
and that the private key cannot be extracted from the returned KeyObject
. Similarly, if a KeyObject
with type 'private'
is given, a new KeyObject
with type 'public'
will be returned and it will be impossible to extract the private key from the returned object.
Since
v11.6.0