if (sig==NULL)
return false;
const EC_GROUP *group = EC_KEY_get0_group(pkey);
- CBigNum order, halforder;
- EC_GROUP_get_order(group, order.get(), NULL);
- BN_rshift1(halforder.get(), order.get());
+
+ BIGNUM* order = BN_new(), *halforder = BN_new();
+ EC_GROUP_get_order(group, order, NULL);
+ BN_rshift1(halforder, order);
// Get internal R and S pointers
const BIGNUM *current_s = ECDSA_SIG_get0_s(sig);
// enforce low S values, by negating the value (modulo the order) if above order/2.
- if (BN_cmp(current_s, halforder.get()) > 0) {
+ if (BN_cmp(current_s, halforder) > 0) {
BIGNUM *updated_s = BN_new();
BN_copy(updated_s, current_s);
- BN_sub(updated_s, order.get(), updated_s);
+ BN_sub(updated_s, order, updated_s);
ECDSA_SIG_set0(sig, NULL, updated_s);
}
+ BN_free(order);
+ BN_free(halforder);
+
unsigned int nSize = ECDSA_size(pkey);
vchSig.resize(nSize); // Make sure it is big enough
unsigned char *pos = &vchSig[0];
if (sig==NULL)
return false;
const EC_GROUP *group = EC_KEY_get0_group(pkey);
- CBigNum order, halforder;
- EC_GROUP_get_order(group, order.get(), NULL);
- BN_rshift1(halforder.get(), order.get());
+ BIGNUM* order = BN_new(), *halforder = BN_new();
+ EC_GROUP_get_order(group, order, NULL);
+ BN_rshift1(halforder, order);
// Get internal R and S pointers
const BIGNUM *current_s = ECDSA_SIG_get0_s(sig);
// enforce low S values, by negating the value (modulo the order) if above order/2.
- if (BN_cmp(current_s, halforder.get()) > 0) {
+ if (BN_cmp(current_s, halforder) > 0) {
BIGNUM *updated_s = BN_new();
BN_copy(updated_s, current_s);
- BN_sub(updated_s, order.get(), updated_s);
+ BN_sub(updated_s, order, updated_s);
ECDSA_SIG_set0(sig, NULL, updated_s);
}
+ BN_free(order);
+ BN_free(halforder);
+
vchSig.clear();
vchSig.resize(65,0);
int nBitsR = BN_num_bits(ECDSA_SIG_get0_r(sig));
BN_bn2bin(ECDSA_SIG_get0_s(sig),&vchSig[65-(nBitsS+7)/8]);
fOk = true;
}
+
ECDSA_SIG_free(sig);
return fOk;
}
// ECC multiplication by specified multiplier
bool CPoint::ECMUL(const CBigNum &bnMultiplier)
{
- if (!EC_POINT_mul(group, point, NULL, point, bnMultiplier.get(), NULL)) {
- printf("CPoint::ECMUL() : EC_POINT_mul failed");
- return false;
- }
-
- return true;
+ BIGNUM* bnMul = bnMultiplier.get();
+ bool ok = EC_POINT_mul(group, point, NULL, point, bnMul, NULL);
+ if (!ok) printf("CPoint::ECMUL() : EC_POINT_mul failed");
+ BN_free(bnMul);
+ return ok;
}
// Calculate G*m + q
bool CPoint::ECMULGEN(const CBigNum &bnMultiplier, const CPoint &qPoint)
{
- if (!EC_POINT_mul(group, point, bnMultiplier.get(), qPoint.point, BN_value_one(), NULL)) {
- printf("CPoint::ECMULGEN() : EC_POINT_mul failed.");
- return false;
- }
-
- return true;
+ BIGNUM* bnMul = bnMultiplier.get();
+ bool ok = EC_POINT_mul(group, point, bnMul, qPoint.point, BN_value_one(), NULL);
+ if (!ok) printf("CPoint::ECMULGEN() : EC_POINT_mul failed.");
+ BN_free(bnMul);
+ return ok;
}
// CMalleablePubKey