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c-kzg-4844
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Rename some goto labels & fix bug

This commit is contained in:
Justin Traglia 2022-12-21 14:36:29 -06:00
parent e7e09a7605
commit f33c4b8060
1 changed files with 26 additions and 25 deletions
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51
src/c_kzg_4844.c
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@ -264,7 +264,7 @@ static C_KZG_RET fr_batch_inv(fr_t *out, const fr_t *a, size_t len) {
size_t i;
ret = new_fr_array(&prod, len);
if (ret != C_KZG_OK) goto out_error;
if (ret != C_KZG_OK) goto out;
prod[0] = a[0];
@ -280,7 +280,7 @@ static C_KZG_RET fr_batch_inv(fr_t *out, const fr_t *a, size_t len) {
}
out[0] = inv;
out_error:
out:
if (prod != NULL) free(prod);
return ret;
}
@ -1014,20 +1014,21 @@ static C_KZG_RET evaluate_polynomial_in_evaluation_form(BLSFieldElement *out, co
const fr_t *roots_of_unity = s->fs->roots_of_unity;
ret = new_fr_array(&inverses_in, FIELD_ELEMENTS_PER_BLOB);
if (ret != C_KZG_OK) goto out_error;
if (ret != C_KZG_OK) goto out;
ret = new_fr_array(&inverses, FIELD_ELEMENTS_PER_BLOB);
if (ret != C_KZG_OK) goto out_error;
if (ret != C_KZG_OK) goto out;
for (i = 0; i < FIELD_ELEMENTS_PER_BLOB; i++) {
if (fr_equal(x, &roots_of_unity[i])) {
*out = p[i];
goto out_error;
ret = C_KZG_OK;
goto out;
}
fr_sub(&inverses_in[i], x, &roots_of_unity[i]);
}
ret = fr_batch_inv(inverses, inverses_in, FIELD_ELEMENTS_PER_BLOB);
if (ret != C_KZG_OK) goto out_error;
if (ret != C_KZG_OK) goto out;
*out = fr_zero;
for (i = 0; i < FIELD_ELEMENTS_PER_BLOB; i++) {
@ -1041,7 +1042,7 @@ static C_KZG_RET evaluate_polynomial_in_evaluation_form(BLSFieldElement *out, co
fr_sub(&tmp, &tmp, &fr_one);
fr_mul(out, out, &tmp);
out_error:
out:
if (inverses_in != NULL) free(inverses_in);
if (inverses != NULL) free(inverses);
return ret;
@ -1065,7 +1066,7 @@ static C_KZG_RET compute_kzg_proof(KZGProof *out, const Polynomial p, const BLSF
fr_t *inverses = NULL;
ret = evaluate_polynomial_in_evaluation_form(&y, p, x, s);
if (ret != C_KZG_OK) goto out_error;
if (ret != C_KZG_OK) goto out;
fr_t tmp;
Polynomial q;
@ -1073,9 +1074,9 @@ static C_KZG_RET compute_kzg_proof(KZGProof *out, const Polynomial p, const BLSF
uint64_t i, m = 0;
ret = new_fr_array(&inverses_in, FIELD_ELEMENTS_PER_BLOB);
if (ret != C_KZG_OK) goto out_error;
if (ret != C_KZG_OK) goto out;
ret = new_fr_array(&inverses, FIELD_ELEMENTS_PER_BLOB);
if (ret != C_KZG_OK) goto out_error;
if (ret != C_KZG_OK) goto out;
for (i = 0; i < FIELD_ELEMENTS_PER_BLOB; i++) {
if (fr_equal(x, &roots_of_unity[i])) {
@ -1088,7 +1089,7 @@ static C_KZG_RET compute_kzg_proof(KZGProof *out, const Polynomial p, const BLSF
}
ret = fr_batch_inv(inverses, inverses_in, FIELD_ELEMENTS_PER_BLOB);
if (ret != C_KZG_OK) goto out_error;
if (ret != C_KZG_OK) goto out;
for (i = 0; i < FIELD_ELEMENTS_PER_BLOB; i++) {
fr_mul(&q[i], &q[i], &inverses[i]);
@ -1103,7 +1104,7 @@ static C_KZG_RET compute_kzg_proof(KZGProof *out, const Polynomial p, const BLSF
fr_mul(&inverses_in[i], &tmp, x);
}
ret = fr_batch_inv(inverses, inverses_in, FIELD_ELEMENTS_PER_BLOB);
if (ret != C_KZG_OK) goto out_error;
if (ret != C_KZG_OK) goto out;
for (i = 0; i < FIELD_ELEMENTS_PER_BLOB; i++) {
fr_sub(&tmp, &p[i], &y);
fr_mul(&tmp, &tmp, &roots_of_unity[i]);
@ -1114,7 +1115,7 @@ static C_KZG_RET compute_kzg_proof(KZGProof *out, const Polynomial p, const BLSF
ret = g1_lincomb(out, s->g1_values, q, FIELD_ELEMENTS_PER_BLOB);
out_error:
out:
if (inverses_in != NULL) free(inverses_in);
if (inverses != NULL) free(inverses);
return ret;
@ -1206,13 +1207,13 @@ static C_KZG_RET compute_aggregated_poly_and_commitment(Polynomial poly_out, KZG
C_KZG_RET ret;
ret = compute_challenges(chal_out, r_powers, polys, kzg_commitments, n);
if (ret != C_KZG_OK) goto out_error;
if (ret != C_KZG_OK) goto out;
poly_lincomb(poly_out, polys, r_powers, n);
ret = g1_lincomb(comm_out, kzg_commitments, r_powers, n);
out_error:
out:
if (r_powers != NULL) free(r_powers);
return C_KZG_OK;
}
@ -1229,32 +1230,32 @@ C_KZG_RET compute_aggregate_kzg_proof(KZGProof *out,
if (0 < n && commitments == NULL)
{
ret = C_KZG_MALLOC;
goto out_error;
goto out;
}
polys = calloc(n, sizeof(Polynomial));
if (0 < n && polys == NULL)
{
ret = C_KZG_MALLOC;
goto out_error;
goto out;
}
for (size_t i = 0; i < n; i++) {
ret = poly_from_blob(polys[i], blobs[i]);
if (ret != C_KZG_OK) goto out_error;
if (ret != C_KZG_OK) goto out;
ret = poly_to_kzg_commitment(&commitments[i], polys[i], s);
if (ret != C_KZG_OK) goto out_error;
if (ret != C_KZG_OK) goto out;
}
Polynomial aggregated_poly;
KZGCommitment aggregated_poly_commitment;
BLSFieldElement evaluation_challenge;
ret = compute_aggregated_poly_and_commitment(aggregated_poly, &aggregated_poly_commitment, &evaluation_challenge, polys, commitments, n);
if (ret != C_KZG_OK) goto out_error;
if (ret != C_KZG_OK) goto out;
ret = compute_kzg_proof(out, aggregated_poly, &evaluation_challenge, s);
out_error:
out:
if (commitments != NULL) free(commitments);
if (polys != NULL) free(polys);
return ret;
@ -1271,22 +1272,22 @@ C_KZG_RET verify_aggregate_kzg_proof(bool *out,
if (polys == NULL) return C_KZG_MALLOC;
for (size_t i = 0; i < n; i++) {
ret = poly_from_blob(polys[i], blobs[i]);
if (ret != C_KZG_OK) goto out_error;
if (ret != C_KZG_OK) goto out;
}
Polynomial aggregated_poly;
KZGCommitment aggregated_poly_commitment;
BLSFieldElement evaluation_challenge;
ret = compute_aggregated_poly_and_commitment(aggregated_poly, &aggregated_poly_commitment, &evaluation_challenge, polys, expected_kzg_commitments, n);
if (ret != C_KZG_OK) goto out_error;
if (ret != C_KZG_OK) goto out;
BLSFieldElement y;
ret = evaluate_polynomial_in_evaluation_form(&y, aggregated_poly, &evaluation_challenge, s);
if (ret != C_KZG_OK) goto out_error;
if (ret != C_KZG_OK) goto out;
ret = verify_kzg_proof_impl(out, &aggregated_poly_commitment, &evaluation_challenge, &y, kzg_aggregated_proof, s);
out_error:
out:
if (polys != NULL) free(polys);
return ret;
}