// engine method
public KeyPair generateKeyPair() {
if (serviceIterator == null) {
return spi.generateKeyPair();
}
RuntimeException failure = null;
KeyPairGeneratorSpi mySpi = spi;
do {
try {
return mySpi.generateKeyPair();
} catch (RuntimeException e) {
if (failure == null) {
failure = e;
}
mySpi = nextSpi(mySpi, true);
}
} while (mySpi != null);
throw failure;
}
