- load_public_key(+Stream, -PublicKey) is det
- Load a public key PublicKey from the given stream Stream.
Supports loading both DER- and PEM-encoded keys. The key must be
an RSA, EC, Ed25519 or X25519 key. DH and DSA keys are not
supported, and PublicKey will be bound to an atom (dh_key or
dsa_key) if you try and load such a key. Otherwise PublicKey
will be unified with
public_key(KeyTerm), where KeyTerm is an
rsa/8 or ec/3 term as with load_private_key/3, or ed25519/1 or
x25519/1 holding the hexadecimal public key.