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Move fe_square() into square() and square_mut() in FieldElement.

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This commit is contained in:
Adam Wick
2019-05-25 16:59:56 -07:00
parent 25746af626
commit ac380d08af
2 changed files with 239 additions and 269 deletions
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15
src/ed25519/point.rs
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@@ -47,23 +47,22 @@ impl Point {
let hy = FieldElement::from_bytes(s);
let hz = FieldElement::one();
fe_square(&mut u, &hy);
u = hy.square();
v = &u * &D;
temp = u.clone();
u = &temp - &hz; /* u = y^2-1 */
v += &hz;
fe_square(&mut v3, &v);
v3 = v.square();
v3 *= &v; /* v3 = v^3 */
let mut hx = FieldElement::zero();
fe_square(&mut hx, &v3);
let mut hx = v3.square();
hx *= &v;
hx *= &u; /* x = uv^7 */
hx = fe_pow22523(&hx); /* x = (uv^7)^((q-5)/8) */
hx *= &v3;
hx *= &u; /* x = uv^3(uv^7)^((q-5)/8) */
fe_square(&mut vxx, &hx);
vxx = hx.square();
vxx *= &v;
let mut check = &vxx - &u; /* vx^2-u */
if fe_isnonzero(&check) {
@@ -322,11 +321,11 @@ fn ge_p2_dbl(r: &mut PointP1P1, p: &Point2)
{
let mut t0 = FieldElement::new();
fe_square(&mut r.x, &p.x);
fe_square(&mut r.z, &p.y);
r.x = p.x.square();
r.z = p.y.square();
fe_sq2(&mut r.t, &p.z);
r.y = &p.x + &p.y;
fe_square(&mut t0, &r.y);
t0 = r.y.square();
r.y = &r.z + &r.x;
r.z -= &r.x;
r.x = &t0 - &r.y;