From 45fa74db0a273f9ad36b1496c59b5caaaa1e6874 Mon Sep 17 00:00:00 2001
From: Jack Lloyd <jack@randombit.net>
Date: Wed, 18 Apr 2018 12:01:47 -0400
Subject: Add cycle counter for NIST reduction

---
 src/cli/speed.cpp | 52 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 52 insertions(+)

(limited to 'src')

diff --git a/src/cli/speed.cpp b/src/cli/speed.cpp
index fdd62ce11..3ec8b83e4 100644
--- a/src/cli/speed.cpp
+++ b/src/cli/speed.cpp
@@ -91,6 +91,7 @@
    #include <botan/numthry.h>
    #include <botan/pow_mod.h>
    #include <botan/reducer.h>
+   #include <botan/curve_nistp.h>
 #endif
 
 #if defined(BOTAN_HAS_ECC_GROUP)
@@ -919,6 +920,10 @@ class Speed final : public Command
                {
                bench_bn_redc(msec);
                }
+            else if(algo == "nistp_redc")
+               {
+               bench_nistp_redc(msec);
+               }
 #endif
 
 #if defined(BOTAN_HAS_FPE_FE1)
@@ -1506,6 +1511,53 @@ class Speed final : public Command
 #endif
 
 #if defined(BOTAN_HAS_NUMBERTHEORY)
+      void bench_nistp_redc(const std::chrono::milliseconds total_runtime)
+         {
+         Botan::secure_vector<Botan::word> ws;
+
+         auto runtime = total_runtime / 5;
+
+         std::unique_ptr<Timer> p192_timer = make_timer("P-192 redc");
+         while(p192_timer->under(runtime))
+            {
+            Botan::BigInt r192(rng(), 192*2 - 1);
+            p192_timer->run([&]() { Botan::redc_p192(r192, ws); });
+            }
+         record_result(p192_timer);
+
+         std::unique_ptr<Timer> p224_timer = make_timer("P-224 redc");
+         while(p224_timer->under(runtime))
+            {
+            Botan::BigInt r224(rng(), 224*2 - 1);
+            p224_timer->run([&]() { Botan::redc_p224(r224, ws); });
+            }
+         record_result(p224_timer);
+
+         std::unique_ptr<Timer> p256_timer = make_timer("P-256 redc");
+         while(p256_timer->under(runtime))
+            {
+            Botan::BigInt r256(rng(), 256*2 - 1);
+            p256_timer->run([&]() { Botan::redc_p256(r256, ws); });
+            }
+         record_result(p256_timer);
+
+         std::unique_ptr<Timer> p384_timer = make_timer("P-384 redc");
+         while(p384_timer->under(runtime))
+            {
+            Botan::BigInt r384(rng(), 384*2 - 1);
+            p384_timer->run([&]() { Botan::redc_p384(r384, ws); });
+            }
+         record_result(p384_timer);
+
+         std::unique_ptr<Timer> p521_timer = make_timer("P-521 redc");
+         while(p521_timer->under(runtime))
+            {
+            Botan::BigInt r521(rng(), 521*2 - 1);
+            p521_timer->run([&]() { Botan::redc_p521(r521, ws); });
+            }
+         record_result(p521_timer);
+         }
+
       void bench_bn_redc(const std::chrono::milliseconds runtime)
          {
          Botan::BigInt p;
-- 
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