pub fn keygen_internal<P: Params>(xi: &[u8; 32]) -> (Vec<u8>, Vec<u8>)Expand description
Deterministic key generation from a 32-byte seed.
Implements Algorithm 6 of FIPS 204 (ML-DSA.KeyGen_internal).
Given a 32-byte seed xi, derives the public matrix A (via ExpandA),
secret vectors s1 and s2 (via ExpandS), and computes the public key
pk = (rho, t1) and secret key sk = (rho, K, tr, s1, s2, t0).
xi: 32-byte random seed.
Returns (pk, sk) as byte vectors.