private String namedCurvesToString(Set<NamedCurve> namedCurves) {
String output = "";
for (NamedCurve nc : namedCurves) {
output = output + nc.name() + " ";
}
return output;
}
private void testSupportedCurves(ProtocolVersion pv, CipherSuite cs) {
for (NamedCurve nc : NamedCurve.values()) {
serverConfig.setProtocolVersion(pv);
serverConfig.setCipherSuites(Collections.singletonList(cs));
serverConfig.setNamedCurves(Collections.singletonList(nc));
boolean success = false;
try {
success = executeHandshake();
} catch (Exception ex) {
LOGGER.info(ex.getLocalizedMessage());
LOGGER.debug(ex.getLocalizedMessage(), ex);
}
if (success) {
supportedCurves.add(nc);
if (lastTlsContext.getEcContext().getServerPublicKeyParameters() != null) {
LOGGER.info(
"EC parameter public key size: {}",
lastTlsContext
.getEcContext()
.getServerPublicKeyParameters()
.getParameters()
.getCurve()
.getFieldSize());
int groupSize =
lastTlsContext
.getEcContext()
.getServerPublicKeyParameters()
.getParameters()
.getCurve()
.getFieldSize();
if (minimumECDHGroupSize == 0 || groupSize < minimumECDHGroupSize) {
minimumECDHGroupSize = groupSize;
}
}
}
}
}