small changes

pull/11871/head
Pieter Wuille 12 years ago
parent c82e1eeead
commit 852cbee819

@ -41,9 +41,11 @@ public:
Context ct(ctx);
Number sn(ct), u1(ct), u2(ct), xrn(ct);
sn.SetModInverse(ct, s, c.order);
// printf("s=%s 1/s=%s\n", s.ToString().c_str(), sn.ToString().c_str());
u1.SetModMul(ct, sn, message, c.order);
u2.SetModMul(ct, sn, r, c.order);
GroupElemJac pr; ECMult(ct, pr, pubkey, u2, u1);
//GroupElemJac pr = pubkey;
if (pr.IsInfinity())
return false;
FieldElem xr; pr.GetX(xr);

11
num.h

@ -68,6 +68,9 @@ public:
memset(bin,0,len);
BN_bn2bin(bn, bin + size - len);
}
void SetInt(int x) {
BN_set_word(bn, x);
}
void SetModInverse(Context &ctx, const Number &x, const Number &m) {
BN_mod_inverse(bn, x.bn, m.bn, ctx);
}
@ -89,7 +92,7 @@ public:
void SetMod(Context &ctx, const Number &a, const Number &m) {
BN_nnmod(bn, m.bn, a.bn, ctx);
}
int Compare(const Number &a) {
int Compare(const Number &a) const {
return BN_cmp(bn, a.bn);
}
int GetBits() const {
@ -106,13 +109,13 @@ public:
return ret;
}
// check whether number is 0,
bool IsZero() {
bool IsZero() const {
return BN_is_zero(bn);
}
bool IsOdd() {
bool IsOdd() const {
return BN_is_odd(bn);
}
bool IsNeg() {
bool IsNeg() const {
return BN_is_negative(bn);
}
void Negate() {

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