chore: checkpoint before Python removal

vendor/pbkdf2/benches/lib.rs

@@ -0,0 +1,41 @@
+#![no_std]
+#![feature(test)]
+
+extern crate test;
+
+use hmac::Hmac;
+use pbkdf2::pbkdf2;
+use test::Bencher;
+
+#[bench]
+pub fn pbkdf2_hmac_sha1_16384_20(bh: &mut Bencher) {
+    let password = b"my secure password";
+    let salt = b"salty salt";
+    let mut buf = [0u8; 20];
+    bh.iter(|| {
+        pbkdf2::<Hmac<sha1::Sha1>>(password, salt, 16_384, &mut buf);
+        test::black_box(&buf);
+    });
+}
+
+#[bench]
+pub fn pbkdf2_hmac_sha256_16384_20(bh: &mut Bencher) {
+    let password = b"my secure password";
+    let salt = b"salty salt";
+    let mut buf = [0u8; 20];
+    bh.iter(|| {
+        pbkdf2::<Hmac<sha2::Sha256>>(password, salt, 16_384, &mut buf);
+        test::black_box(&buf);
+    });
+}
+
+#[bench]
+pub fn pbkdf2_hmac_sha512_16384_20(bh: &mut Bencher) {
+    let password = b"my secure password";
+    let salt = b"salty salt";
+    let mut buf = [0u8; 20];
+    bh.iter(|| {
+        pbkdf2::<Hmac<sha2::Sha512>>(password, salt, 16_384, &mut buf);
+        test::black_box(&buf);
+    });
+}