test rsa encryption/decryption

.gitignore

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+/vendor/
+/bin/
+/bin-int/
+/.vscode/
+/.vs/
+/docs/
+**.log
+**.sln
+**.vcxproj*
+**.make
+**Makefile
+**dependencies.lua
+**linker.lua

app/premake5.lua

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+project "App"
+    kind "ConsoleApp"
+    language "C++"
+    cppdialect "C++20"
+    systemversion "latest"
+
+    targetdir("%{wks.location}/bin/" .. outputdir .. "/%{prj.name}")
+    objdir("%{wks.location}/bin-int/" .. outputdir .. "/%{prj.name}")
+    
+    include "linker.lua"
+
+    files 
+    {
+        "src/**.h",
+        "src/**.cpp"
+    }
+
+filter "configurations:Debug"
+    defines 
+    { 
+        "BK_DEBUG",
+        "DEBUG"
+    }
+    runtime "Debug"
+    symbols "on"
+
+
+filter "configurations:Release"
+    defines 
+    { 
+        "BK_RELEASE",
+        "NDEBUG"
+    }
+    runtime "Release"
+    optimize "on"
+
+filter "system:windows"
+    buildoptions "/MT"
+    staticruntime "on"
+    defines 
+    { 
+        "BK_PLATFORM_WINDOWS" 
+    }
+
+filter "system:linux"
+    staticruntime "on"
+    defines 
+    { 
+        "BK_PLATFORM_LINUX" 
+    }

app/src/app.cpp

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+#include <bakatools.h>
+#include <math.h>
+#include <stdlib.h>
+
+int random(int max, int min = 0)
+{
+    int n = rand();
+    while (n > max || n < min) n = rand();
+    return n;
+}
+
+std::vector<int> prime_range(int max, int min = 2) 
+{
+    //Sieve of Eratosthenes algo from https://www.baeldung.com/cs/prime-number-algorithms
+    std::vector<int> primes;
+    std::vector<bool> primes_check(max);
+    std::fill(primes_check.begin(), primes_check.end(), true);
+
+    for (int i = 2; i < sqrt(max); i++)
+        if (primes_check[i])
+        {
+            int j = i * i;
+            while (j <= max)
+            {
+                primes_check[j] = false;
+                j += i;
+            }
+        }
+
+    for (int i = min; i < primes_check.size(); i++) 
+        if (primes_check[i]) primes.push_back(i);
+
+    return primes;
+}
+
+int gcd(int a, int b)
+{
+    if (b == 0) return a;
+    else return gcd(b, a % b);
+}
+
+void rsa() 
+{
+    auto primes = prime_range(100);
+
+    //int p = primes[random(primes.size())];
+    //int q = primes[random(primes.size())];
+    int p = 3;
+    int q = 11;
+    int n = p * q;
+    int phi = (p - 1) * (q - 1);
+
+    int e = 2;
+    while(e < phi)
+    {
+        if(gcd(e, phi) == 1) break;
+        e += 1;
+    }
+    float d = (e^-1) % phi;
+    BK_INFO("n:{0} phi:{1} e:{2} d:{3}", n, phi, e, d);
+
+    int msg = 11;
+    float C = pow(msg, e);
+    C = fmod(C, n);
+    BK_INFO(C);
+    float M = pow(C,d);
+    M = fmod(M, n);
+    BK_INFO(M);
+}
+
+int main()
+{
+    Bk::Log::init("Bakacypher");
+    rsa();
+    return 0;
+}

package.json

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+{
+    "name": "Bakacrypt",
+    "author": "anulax1225",
+    "git": "",
+    "packages": [
+        {
+            "author": "anulax1225",
+            "name": "bakatools"
+        }
+    ]
+}

premake5.lua

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+workspace "Bakacrypt"
+    architecture "x64"
+    configurations { "Debug", "Release" }
+    startproject "App"
+
+    flags
+    {
+        "MultiProcessorCompile"
+    }
+
+    linkgroups "On"
+outputdir = "%{cfg.system}-%{cfg.architecture}-%{cfg.buildcfg}"
+
+include "dependencies.lua"
+
+group "App"
+    include "app"
+group ""
+