static DHPublicKeySpec getDHPublicKeySpec(PublicKey key) {
if (key instanceof DHPublicKey) {
DHPublicKey dhKey = (DHPublicKey) key;
DHParameterSpec params = dhKey.getParams();
return new DHPublicKeySpec(dhKey.getY(), params.getP(), params.getG());
}
try {
KeyFactory factory = JsseJce.getKeyFactory("DH");
return (DHPublicKeySpec) factory.getKeySpec(key, DHPublicKeySpec.class);
} catch (Exception e) {
throw new RuntimeException(e);
}
}
