From 78c59dc6685c4a33682c1ddaeb99af5bc9b88b9f Mon Sep 17 00:00:00 2001
From: hashlag <hashlag@hashlag.net>
Date: Thu, 29 Jan 2026 23:39:00 +0300
Subject: [PATCH] Add HmacSha1_ReuseBench

---
 ChaosBenches/Mac/HmacBenches.cpp | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/ChaosBenches/Mac/HmacBenches.cpp b/ChaosBenches/Mac/HmacBenches.cpp
index 049f8d5..30d453e 100644
--- a/ChaosBenches/Mac/HmacBenches.cpp
+++ b/ChaosBenches/Mac/HmacBenches.cpp
@@ -136,3 +136,19 @@ static void HmacSha1_CreateComputeDeleteBench(benchmark::State & state)
 }
 
 BENCHMARK(HmacSha1_CreateComputeDeleteBench);
+
+static void HmacSha1_ReuseBench(benchmark::State & state)
+{
+    Hmac<Sha1Hasher> hmac;
+
+    for (auto _ : state)
+    {
+        hmac.Rekey(KEY_BEGIN, KEY_END);
+        hmac.Update(DATA_BEGIN, DATA_END);
+        Sha1Hash result = hmac.Finish();
+
+        benchmark::DoNotOptimize(result);
+    }
+}
+
+BENCHMARK(HmacSha1_ReuseBench);