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Simplify pointer arithmetics

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This commit is contained in:
Andrew
2023-06-04 14:54:22 +03:00
parent 8e4285c960
commit 08ec7cb9bb
4 changed files with 33 additions and 37 deletions
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16
src/util.cpp
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@@ -27,8 +27,8 @@ EC_GROUP *initializeEllipticCurve(
const std::string generatorYSel,
const std::string publicKeyXSel,
const std::string publicKeyYSel,
EC_POINT **genPoint,
EC_POINT **pubPoint
EC_POINT *&genPoint,
EC_POINT *&pubPoint
) {
// Initialize BIGNUM and BIGNUMCTX structures.
// BIGNUM - Large numbers
@@ -69,16 +69,16 @@ EC_GROUP *initializeEllipticCurve(
EC_GROUP *eCurve = EC_GROUP_new_curve_GFp(p, a, b, context);
// Create new point for the generator on the elliptic curve and set its coordinates to (genX; genY).
*genPoint = EC_POINT_new(eCurve);
EC_POINT_set_affine_coordinates(eCurve, *genPoint, generatorX, generatorY, context);
genPoint = EC_POINT_new(eCurve);
EC_POINT_set_affine_coordinates(eCurve, genPoint, generatorX, generatorY, context);
// Create new point for the public key on the elliptic curve and set its coordinates to (pubX; pubY).
*pubPoint = EC_POINT_new(eCurve);
EC_POINT_set_affine_coordinates(eCurve, *pubPoint, publicKeyX, publicKeyY, context);
pubPoint = EC_POINT_new(eCurve);
EC_POINT_set_affine_coordinates(eCurve, pubPoint, publicKeyX, publicKeyY, context);
// If generator and public key points are not on the elliptic curve, either the generator or the public key values are incorrect.
assert(EC_POINT_is_on_curve(eCurve, *genPoint, context) == 1);
assert(EC_POINT_is_on_curve(eCurve, *pubPoint, context) == 1);
assert(EC_POINT_is_on_curve(eCurve, genPoint, context) == true);
assert(EC_POINT_is_on_curve(eCurve, pubPoint, context) == true);
// Cleanup
BN_CTX_free(context);