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Make Field::Normalize explicit

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This commit is contained in:
Pieter Wuille
2013-03-21 01:10:30 +01:00
parent 0a07e62f6f
commit 8a926ee91f
4 changed files with 44 additions and 11 deletions
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12
group.cpp
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@@ -71,6 +71,8 @@ bool GroupElemJac::IsValid() const {
FieldElem z6; z6.SetSquare(z2); z6.SetMult(z6,z2);
z6 *= 7;
x3 += z6;
y2.Normalize();
x3.Normalize();
return y2 == x3;
}
@@ -122,12 +124,14 @@ void GroupElemJac::SetCompressed(const FieldElem &xin, bool fOdd) {
c += x3;
y.SetSquareRoot(c);
z = FieldElem(1);
y.Normalize();
if (y.IsOdd() != fOdd)
y.SetNeg(y,1);
}
void GroupElemJac::SetDouble(const GroupElemJac &p) {
FieldElem t5 = p.y;
t5.Normalize();
if (p.fInfinity || t5.IsZero()) {
fInfinity = true;
return;
@@ -174,7 +178,11 @@ void GroupElemJac::SetAdd(const GroupElemJac &p, const GroupElemJac &q) {
FieldElem u2; u2.SetMult(x2, z12);
FieldElem s1; s1.SetMult(y1, z22); s1.SetMult(s1, z2);
FieldElem s2; s2.SetMult(y2, z12); s2.SetMult(s2, z1);
u1.Normalize();
u2.Normalize();
if (u1 == u2) {
s1.Normalize();
s2.Normalize();
if (s1 == s2) {
SetDouble(p);
} else {
@@ -214,7 +222,11 @@ void GroupElemJac::SetAdd(const GroupElemJac &p, const GroupElem &q) {
FieldElem u2; u2.SetMult(x2, z12);
FieldElem s1 = y1; s1.Normalize();
FieldElem s2; s2.SetMult(y2, z12); s2.SetMult(s2, z1);
u1.Normalize();
u2.Normalize();
if (u1 == u2) {
s1.Normalize();
s2.Normalize();
if (s1 == s2) {
SetDouble(p);
} else {