Sure, I just thought (based on the genesis block comment) that they were going to make their own. And, well, https://eprint.iacr.org/2014/161.pdf https://eprint

Sure, I just thought (based on the genesis block comment) that they were going to make their own. And, well, https://eprint.iacr.org/2014/161.pdf https://eprint.iacr.org/2014/161.pdf Using the same primitives as everyone else is probably a conservative choice.