INNER CODE UNIT · C

ctr2

pq-crystals/dilithium · avx2/poly.c:441

  ctr2 = rej_uniform_avx(a2->coeffs, buf[2].coeffs);
  ctr3 = rej_uniform_avx(a3->coeffs, buf[3].coeffs);

  while(ctr0 < N || ctr1 < N || ctr2 < N || ctr3 < N) {
    shake128x4_squeezeblocks(buf[0].coeffs, buf[1].coeffs, buf[2].coeffs, buf[3].coeffs, 1, &state);

    ctr0 += rej_uniform(a0->coeffs + ctr0, N - ctr0, buf[0].coeffs, SHAKE128_RATE);
    ctr1 += rej_uniform(a1->coeffs + ctr1, N - ctr1, buf[1].coeffs, SHAKE128_RATE);
    ctr2 += rej_uniform(a2->coeffs + ctr2, N - ctr2, buf[2].coeffs, SHAKE128_RATE);
    ctr3 += rej_uniform(a3->coeffs + ctr3, N - ctr3, buf[3].coeffs, SHAKE128_RATE);
  }
}

/*************************************************
* Name:        rej_eta
*
* Description: Sample uniformly random coefficients in [-ETA, ETA] by
*              performing rejection sampling on array of random bytes.

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