Save results of measurements

HWBTutorials.code-workspace

@@ -11,13 +11,17 @@
             "name": "AES",
             "path": "./aes"
         },
+        {
+            "name": "AES Performance",
+            "path": "./aes-performance"
+        },
         {
             "name": "AES 32-bit",
-            "path": "./aes-32bit"
+            "path": "./aes-performance/aes-32bit"
         },
         {
             "name": "AES TBoxes",
-            "path": "./aes-tboxes"
+            "path": "./aes-performance/aes-tboxes"
         },
         {
             "name": "TRNG Attack",

aes-performance/README.md

@@ -0,0 +1,8 @@
+# Performant AES Implementation
+
+| Variant      | Time for 1 mio. Iterations | Time for 10 mio. Iterations | Processor      | OS                | Compiler | Compiler Switches |
+| ------------ | -------------------------- | --------------------------- | -------------- | ----------------- | -------- | ----------------- |
+| `aes-32bit`  | 3163ms                     | 4632ms                      | Intel i7-8650U | Arch Linux x86_64 | `gcc`    | `-g`              |
+| `aes-32bit`  | 482ms                      | 5152ms                      | Intel i7-8650U | Arch Linux x86_64 | `gcc`    | `-Ofast`          |
+| `aes-tboxes` | 203ms                      | 1708ms                      | Intel i7-8650U | Arch Linux x86_64 | `gcc`    | `-g`              |
+| `aes-tboxes` | 148ms                      | 1600ms                      | Intel i7-8650U | Arch Linux x86_64 | `gcc`    | `-Ofast`          |

aes-performance/aes-32bit/Makefile

@@ -1,4 +1,4 @@
-CPPFLAGS = -g -Ofast
+CPPFLAGS ?= -Ofast
 
 BUILD_DIR = bin
 

aes-performance/aes-tboxes/Makefile

@@ -1,4 +1,4 @@
-CPPFLAGS = -g -Ofast
+CPPFLAGS = -Ofast
 
 BUILD_DIR = bin
 

aes-performance/aes-tboxes/aes.cpp

@@ -214,6 +214,5 @@ int main(int argc, char* argv[])
  
     std::cout << "AES (" << cycles  << " runs)\nElapsed time: ";
     std::cout << milliseconds << "ms\n"; // Before C++20
-    std::cout << "Last result: " << in << "\n";
     exit(in[0]);
 }

aes-performance/measure.sh

@@ -0,0 +1,26 @@
+#!/bin/bash
+dir="${BASH_SOURCE%/*}";
+
+for program in "aes-32bit" "aes-tboxes"
+do
+    for flags in "-g" ""
+    do
+        if [ -z "$flags" ]
+        then
+            mode="performance";
+        else
+            mode="debug";
+            export CPPFLAGS="$flags";
+        fi;
+
+        for iterations in "1000000" "10000000"
+        do
+            echo "$program ($iterations iterations, $mode mode)";
+            root="$dir/$program";
+            make -C "$root" clean > /dev/null 2>&1;
+            make -C "$root" > /dev/null 2>&1;
+            "$dir/$program/bin/aes" "$iterations";
+            unset CPPFLAGS;
+        done;
+    done;
+done;