1 files changed, 29 insertions, 0 deletions
diff --git a/third_party/rust/constant_time_eq/benches/bench.rs b/third_party/rust/constant_time_eq/benches/bench.rs
new file mode 100644
index 0000000000..4b3b790a5d
--- /dev/null
+++ b/third_party/rust/constant_time_eq/benches/bench.rs
@@ -0,0 +1,29 @@
+#![feature(test)]
+
+extern crate constant_time_eq;
+extern crate test;
+
+use constant_time_eq::constant_time_eq;
+use test::{Bencher, black_box};
+
+fn bench(b: &mut Bencher, left: &[u8], right: &[u8]) {
+    b.bytes = (left.len() + right.len()) as u64;
+    b.iter(|| {
+        constant_time_eq(black_box(left), black_box(right))
+    })
+}
+
+#[bench]
+fn bench_16(b: &mut Bencher) {
+    bench(b, &[0; 16], &[0; 16])
+}
+
+#[bench]
+fn bench_4096(b: &mut Bencher) {
+    bench(b, &[0; 4096], &[0; 4096])
+}
+
+#[bench]
+fn bench_65536(b: &mut Bencher) {
+    bench(b, &[0; 65536], &[0; 65536])
+}