status-im/c-kzg-4844
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Remove n == 1 special case

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This commit is contained in:
Ramana Kumar 2022-11-18 22:25:46 +00:00
parent 27f772402e
commit 8820b7a659
1 changed files with 5 additions and 11 deletions
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src/c_kzg_4844.c
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@ -1117,28 +1117,22 @@ static C_KZG_RET compute_aggregated_poly_and_commitment(Polynomial poly_out, KZG
ret = hash_to_bytes(hash, polys, kzg_commitments, n); ret = hash_to_bytes(hash, polys, kzg_commitments, n);
if (ret != C_KZG_OK) { free(hash); return ret; } if (ret != C_KZG_OK) { free(hash); return ret; }
if (n == 1) { BLSFieldElement* r_powers = calloc(n + 1, sizeof(BLSFieldElement));
bytes_to_bls_field(chal_out, hash);
poly_lincomb(poly_out, polys, chal_out, n);
g1_lincomb(comm_out, kzg_commitments, chal_out, n);
free(hash);
return C_KZG_OK;
}
BLSFieldElement* r_powers = calloc(n, sizeof(BLSFieldElement));
if (r_powers == NULL) { free(hash); return C_KZG_MALLOC; } if (r_powers == NULL) { free(hash); return C_KZG_MALLOC; }
bytes_to_bls_field(&r_powers[1], hash); bytes_to_bls_field(&r_powers[1], hash);
free(hash); free(hash);
compute_powers(r_powers, n); compute_powers(r_powers, n + 1);
fr_mul(chal_out, &r_powers[1], &r_powers[n - 1]);
*chal_out = r_powers[n];
poly_lincomb(poly_out, polys, r_powers, n); poly_lincomb(poly_out, polys, r_powers, n);
g1_lincomb(comm_out, kzg_commitments, r_powers, n); g1_lincomb(comm_out, kzg_commitments, r_powers, n);
free(r_powers); free(r_powers);
return C_KZG_OK; return C_KZG_OK;
} }