Use the getEncoded() method to get the byte from the keys. To go the other way, getting an RSAPublicKey or RSAPrivateKey from a byte, use the appropriate KeyFactory methods and encoded key specs, e.g. for RSAPrivateKey
and for RSAPublicKey
I succeed in storing and retreiving the private key as in the first example. But when I try the public key conversion from byte array to a PublicKey object I get the following exception:
Somebody have a clue why the PublicKey example does not work?