pub fn generate_commitment_key(prime_bits: u32) -> CommitmentKeyExpand description
Generate a commitment key: Ñ = P̃Q̃ with P̃, Q̃ safe primes of
prime_bits each, h₁ a random quadratic residue mod Ñ, and
h₂ = h₁^w for uniformly random discarded w.
The generator of this key is its VERIFIER — see the module docs for the trust direction.