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std: fix compile errors in std.crypto.ecc (#23797)

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Implemented `neg()` method for `AffineCoordinates` struct of p256,
p384 and secp256k1 curves.

Resolves: #20505 (partially)
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HydroH 2025-05-06 02:50:25 +08:00 • committed by GitHub
parent 369177f0ba
commit a14352b0b2
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3 changed files with 12 additions and 0 deletions
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4
lib/std/crypto/pcurves/p256.zig
View file

@ -471,6 +471,10 @@ pub const AffineCoordinates = struct {
/// Identity element in affine coordinates.
pub const identityElement = AffineCoordinates{ .x = P256.identityElement.x, .y = P256.identityElement.y };
pub fn neg(p: AffineCoordinates) AffineCoordinates {
return .{ .x = p.x, .y = p.y.neg() };
}
fn cMov(p: *AffineCoordinates, a: AffineCoordinates, c: u1) void {
p.x.cMov(a.x, c);
p.y.cMov(a.y, c);

4
lib/std/crypto/pcurves/p384.zig
View file

@ -471,6 +471,10 @@ pub const AffineCoordinates = struct {
/// Identity element in affine coordinates.
pub const identityElement = AffineCoordinates{ .x = P384.identityElement.x, .y = P384.identityElement.y };
pub fn neg(p: AffineCoordinates) AffineCoordinates {
return .{ .x = p.x, .y = p.y.neg() };
}
fn cMov(p: *AffineCoordinates, a: AffineCoordinates, c: u1) void {
p.x.cMov(a.x, c);
p.y.cMov(a.y, c);

4
lib/std/crypto/pcurves/secp256k1.zig
View file

@ -549,6 +549,10 @@ pub const AffineCoordinates = struct {
/// Identity element in affine coordinates.
pub const identityElement = AffineCoordinates{ .x = Secp256k1.identityElement.x, .y = Secp256k1.identityElement.y };
pub fn neg(p: AffineCoordinates) AffineCoordinates {
return .{ .x = p.x, .y = p.y.neg() };
}
fn cMov(p: *AffineCoordinates, a: AffineCoordinates, c: u1) void {
p.x.cMov(a.x, c);
p.y.cMov(a.y, c);