Good. But the builder will not provide default values so you will see
new DrbgParameters.Builder().build().getAlgorithm() == null which means the getters still return requested values. In this case, the algorithm will only be known after it is used for a specific DRBG, for example, SHA-256 for HashDRBG, and AES-256 for CtrDRBG. --Max > On Dec 15, 2015, at 12:05 AM, Sean Mullan <sean.mul...@oracle.com> wrote: > > The DrbgParameters class has 7 parameters, most of which are optional. A > typical use case might involve lots of null parameters: > > DrbgParameters params = new DrbgParameters(null, null, 256, false, false, > nonce, null); > > That seems awkward, and you have be overly careful to map the right value to > each parameter. > > I think this is a case where a DrbgParameters.Builder would be very useful. > > --Sean