polyvecfrombytes function
Converts bytes to a polyvec, assuming the format produced by polyvectobytes.
Implementation
PolyVec polyvecfrombytes(Uint8List r) {
PolyVec v = PolyVec();
for (int i = 0; i < KYBER_K; i++) {
v.vec[i] = polyfrombytes(
r.sublist(i * KYBER_POLYBYTES, (i + 1) * KYBER_POLYBYTES));
}
return v;
}