else if (spec.isAssignableFrom(GOST3410PrivateKeySpec.class) && key instanceof GOST3410PrivateKey)
{
GOST3410PrivateKey k = (GOST3410PrivateKey)key;
GOST3410PublicKeyParameterSetSpec parameters = k.getParameters().getPublicKeyParameters();
return new GOST3410PrivateKeySpec(k.getX(), parameters.getP(), parameters.getQ(), parameters.getA());
}
return super.engineGetKeySpec(key, spec);
}