* contain valid information
*/
public static PublicKey getDSAKey(DSAKeyValue keyDescriptor, DSAParams dsaParams) throws KeyException {
BigInteger yComponent = keyDescriptor.getY().getValueBigInt();
DSAPublicKeySpec keySpec =
new DSAPublicKeySpec(yComponent, dsaParams.getP(), dsaParams.getQ(), dsaParams.getG());
return buildKey(keySpec, "DSA");
}