chore: checkpoint before Python removal

vendor/p256/benches/field.rs

@@ -0,0 +1,54 @@
+//! secp256r1 field element benchmarks
+
+use criterion::{
+    criterion_group, criterion_main, measurement::Measurement, BenchmarkGroup, Criterion,
+};
+use hex_literal::hex;
+use p256::FieldElement;
+
+fn test_field_element_x() -> FieldElement {
+    FieldElement::from_bytes(
+        &hex!("1ccbe91c075fc7f4f033bfa248db8fccd3565de94bbfb12f3c59ff46c271bf83").into(),
+    )
+    .unwrap()
+}
+
+fn test_field_element_y() -> FieldElement {
+    FieldElement::from_bytes(
+        &hex!("ce4014c68811f9a21a1fdb2c0e6113e06db7ca93b7404e78dc7ccd5ca89a4ca9").into(),
+    )
+    .unwrap()
+}
+
+fn bench_field_element_mul<'a, M: Measurement>(group: &mut BenchmarkGroup<'a, M>) {
+    let x = test_field_element_x();
+    let y = test_field_element_y();
+    group.bench_function("mul", |b| b.iter(|| &x * &y));
+}
+
+fn bench_field_element_square<'a, M: Measurement>(group: &mut BenchmarkGroup<'a, M>) {
+    let x = test_field_element_x();
+    group.bench_function("square", |b| b.iter(|| x.square()));
+}
+
+fn bench_field_element_sqrt<'a, M: Measurement>(group: &mut BenchmarkGroup<'a, M>) {
+    let x = test_field_element_x();
+    group.bench_function("sqrt", |b| b.iter(|| x.sqrt()));
+}
+
+fn bench_field_element_invert<'a, M: Measurement>(group: &mut BenchmarkGroup<'a, M>) {
+    let x = test_field_element_x();
+    group.bench_function("invert", |b| b.iter(|| x.invert()));
+}
+
+fn bench_field_element(c: &mut Criterion) {
+    let mut group = c.benchmark_group("field element operations");
+    bench_field_element_mul(&mut group);
+    bench_field_element_square(&mut group);
+    bench_field_element_invert(&mut group);
+    bench_field_element_sqrt(&mut group);
+    group.finish();
+}
+
+criterion_group!(benches, bench_field_element);
+criterion_main!(benches);

vendor/p256/benches/scalar.rs

@@ -0,0 +1,75 @@
+//! secp256r1 scalar arithmetic benchmarks
+
+use criterion::{
+    criterion_group, criterion_main, measurement::Measurement, BenchmarkGroup, Criterion,
+};
+use hex_literal::hex;
+use p256::{elliptic_curve::group::ff::PrimeField, ProjectivePoint, Scalar};
+
+fn test_scalar_x() -> Scalar {
+    Scalar::from_repr(
+        hex!("519b423d715f8b581f4fa8ee59f4771a5b44c8130b4e3eacca54a56dda72b464").into(),
+    )
+    .unwrap()
+}
+
+fn test_scalar_y() -> Scalar {
+    Scalar::from_repr(
+        hex!("0f56db78ca460b055c500064824bed999a25aaf48ebb519ac201537b85479813").into(),
+    )
+    .unwrap()
+}
+
+fn bench_point_mul<'a, M: Measurement>(group: &mut BenchmarkGroup<'a, M>) {
+    let p = ProjectivePoint::GENERATOR;
+    let m = test_scalar_x();
+    let s = Scalar::from_repr(m.into()).unwrap();
+    group.bench_function("point-scalar mul", |b| b.iter(|| &p * &s));
+}
+
+fn bench_scalar_sub<'a, M: Measurement>(group: &mut BenchmarkGroup<'a, M>) {
+    let x = test_scalar_x();
+    let y = test_scalar_y();
+    group.bench_function("sub", |b| b.iter(|| &x - &y));
+}
+
+fn bench_scalar_add<'a, M: Measurement>(group: &mut BenchmarkGroup<'a, M>) {
+    let x = test_scalar_x();
+    let y = test_scalar_y();
+    group.bench_function("add", |b| b.iter(|| &x + &y));
+}
+
+fn bench_scalar_mul<'a, M: Measurement>(group: &mut BenchmarkGroup<'a, M>) {
+    let x = test_scalar_x();
+    let y = test_scalar_y();
+    group.bench_function("mul", |b| b.iter(|| &x * &y));
+}
+
+fn bench_scalar_negate<'a, M: Measurement>(group: &mut BenchmarkGroup<'a, M>) {
+    let x = test_scalar_x();
+    group.bench_function("negate", |b| b.iter(|| -x));
+}
+
+fn bench_scalar_invert<'a, M: Measurement>(group: &mut BenchmarkGroup<'a, M>) {
+    let x = test_scalar_x();
+    group.bench_function("invert", |b| b.iter(|| x.invert()));
+}
+
+fn bench_point(c: &mut Criterion) {
+    let mut group = c.benchmark_group("point operations");
+    bench_point_mul(&mut group);
+    group.finish();
+}
+
+fn bench_scalar(c: &mut Criterion) {
+    let mut group = c.benchmark_group("scalar operations");
+    bench_scalar_sub(&mut group);
+    bench_scalar_add(&mut group);
+    bench_scalar_mul(&mut group);
+    bench_scalar_negate(&mut group);
+    bench_scalar_invert(&mut group);
+    group.finish();
+}
+
+criterion_group!(benches, bench_point, bench_scalar);
+criterion_main!(benches);