Add criterion benchmarks for DHKE

crates/cdk/Cargo.toml

@@ -6,7 +6,7 @@ authors = ["CDK Developers"]
 description = "Core Cashu Development Kit library implementing the Cashu protocol"
 homepage.workspace = true
 repository.workspace = true
-rust-version.workspace = true # MSRV
+rust-version.workspace = true                                                      # MSRV
 license.workspace = true
 
 
@@ -77,6 +77,11 @@ required-features = ["wallet"]
 rand.workspace = true
 bip39.workspace = true
 anyhow.workspace = true
+criterion = "0.5.1"
+
+[[bench]]
+name = "dhke_benchmarks"
+harness = false
 
 [lints.rust]
 unexpected_cfgs = { level = "warn", check-cfg = ['cfg(bench)'] }

crates/cdk/benches/dhke_benchmarks.rs

@@ -0,0 +1,76 @@
+use cdk::dhke;
+use cdk::nuts::nut01::{PublicKey, SecretKey};
+use cdk::util::hex;
+use criterion::{criterion_group, criterion_main, Criterion};
+
+fn bench_dhke(c: &mut Criterion) {
+    // *************************************************************
+    // *     PREPARE DATA FOR BENCHMARKS                           *
+    // *************************************************************
+    let message =
+        hex::decode("d341ee4871f1f889041e63cf0d3823c713eea6aff01e80f1719f08f9e5be98f6").unwrap();
+    let alice_sec: SecretKey =
+        SecretKey::from_hex("99fce58439fc37412ab3468b73db0569322588f62fb3a49182d67e23d877824a")
+            .unwrap();
+
+    let blinded_key =
+        PublicKey::from_hex("02a9acc1e48c25eeeb9289b5031cc57da9fe72f3fe2861d264bdc074209b107ba2")
+            .unwrap();
+
+    let r = SecretKey::from_hex("0000000000000000000000000000000000000000000000000000000000000001")
+        .unwrap();
+    let a =
+        PublicKey::from_hex("020000000000000000000000000000000000000000000000000000000000000001")
+            .unwrap();
+    let bob_sec =
+        SecretKey::from_hex("0000000000000000000000000000000000000000000000000000000000000001")
+            .unwrap();
+    let (blinded_message, _) =
+        dhke::blind_message("test_message".as_bytes(), Some(bob_sec.clone())).unwrap();
+
+    // *************************************************************
+    // *     RUN INDIVIDUAL STEPS                                  *
+    // *************************************************************
+    c.bench_function("hash_to_curve", |b| {
+        b.iter(|| {
+            dhke::hash_to_curve(&message.clone()).unwrap();
+        })
+    });
+
+    c.bench_function("blind_message", |b| {
+        b.iter(|| {
+            dhke::blind_message(&message, Some(alice_sec.clone())).unwrap();
+        })
+    });
+
+    c.bench_function("unblind_message", |b| {
+        b.iter(|| {
+            dhke::unblind_message(&blinded_key, &r, &a).unwrap();
+        })
+    });
+
+    c.bench_function("sign_message", |b| {
+        b.iter(|| {
+            dhke::sign_message(&bob_sec.clone(), &blinded_message).unwrap();
+        })
+    });
+
+    // *************************************************************
+    // *     RUN END TO END BDHKE                                 *
+    // *************************************************************
+    c.bench_function("End-to-End BDHKE", |b| {
+        b.iter(|| {
+            let (b, r) = dhke::blind_message(&message, Some(alice_sec.clone())).unwrap();
+
+            // C_
+            let signed = dhke::sign_message(&bob_sec, &b).unwrap();
+
+            let unblinded = dhke::unblind_message(&signed, &r, &bob_sec.public_key()).unwrap();
+
+            assert!(dhke::verify_message(&bob_sec, unblinded, &message).is_ok());
+        })
+    });
+}
+
+criterion_group!(benches, bench_dhke);
+criterion_main!(benches);