Diffie-Hellman set generator parameter in BouncyCastle

I want to generate new DH parameter as defined in PKCS #3:

DHParameter ::= SEQUENCE {
    p开发者_运维知识库rime INTEGER, -- p
    base INTEGER, -- g
    privateValueLength INTEGER OPTIONAL
}

using BouncyCastle. My current code

DHParametersGenerator generator = new DHParametersGenerator();  
generator.init(2048, DEFAULT_PRIME_CERTAINTY, new SecureRandom());
DHParameters params = generator.generateParameters();

works fine, but I can't see a way to set the base on my own other than modifying the library. Is there some workaround I am missing?

Thanks in advance.

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Actually, most DH implementations uses predefined base value, so it can be no way for doing that without sources modifications.

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Actually you can set the base of your choice using the same class. So your code will become:-

DHParametersGenerator generator = new DHParametersGenerator();  
generator.init(2048, DEFAULT_PRIME_CERTAINTY, new SecureRandom());
DHParameters params = generator.generateParameters();
DHParameters realParams = new DHParameters(params.getP(), BigInteger.valueOf(2));