{
DHParameterSpec dhParams = BouncyCastleProvider.CONFIGURATION.getDHDefaultParameters(strength);
if (dhParams != null)
{
param = new DHKeyGenerationParameters(random, new DHParameters(dhParams.getP(), dhParams.getG(), null, dhParams.getL()));
}
else
{
synchronized (lock)
{
// we do the check again in case we were blocked by a generator for
// our key size.
if (params.containsKey(paramStrength))
{
param = (DHKeyGenerationParameters)params.get(paramStrength);
}
else
{
DHParametersGenerator pGen = new DHParametersGenerator();
pGen.init(strength, certainty, random);
param = new DHKeyGenerationParameters(random, pGen.generateParameters());
params.put(paramStrength, param);
}
}
}