public PublicKey getKey(PublicKeyDataObject publicKeyDataObject)
throws EACException, InvalidKeySpecException {
if (publicKeyDataObject.getUsage().on(EACObjectIdentifiers.id_TA_ECDSA)) {
return getECPublicKeyPublicKey((ECDSAPublicKey) publicKeyDataObject);
} else {
RSAPublicKey pubKey = (RSAPublicKey) publicKeyDataObject;
RSAPublicKeySpec pubKeySpec =
new RSAPublicKeySpec(pubKey.getModulus(), pubKey.getPublicExponent());
try {
KeyFactory factk = helper.createKeyFactory("RSA");
return factk.generatePublic(pubKeySpec);
} catch (NoSuchProviderException e) {
throw new EACException("cannot find provider: " + e.getMessage(), e);
} catch (NoSuchAlgorithmException e) {
throw new EACException("cannot find algorithm ECDSA: " + e.getMessage(), e);
}
}
}