Using PC Data Creates a Strong Entropy Source<\/p>\n\n\n\n
using System;\nusing System.Collections.Generic;\nusing System.Diagnostics;\nusing System.Linq;\nusing System.Runtime.InteropServices;\nusing System.Threading;\npublic class EntropySource\n{\n private const int Sha3BitSize = 256;\n private const int Sha3BitBufferMoveSize = Sha3BitSize >> 3;\n private const int CpuDataLength = 256;\n private const int JitterDataSize = 256;\n [DllImport(\"kernel32.dll\")]\n private static extern int GetTickCount();\n [DllImport(\"kernel32.dll\")]\n internal static extern bool QueryPerformanceCounter(out long lpPerformanceCount);\n [DllImport(\"kernel32.dll\")]\n internal static extern bool QueryPerformanceFrequency(out long lpFrequency);\n public static byte[] GetBuffer(int bufferSize)\n {\n var rhb = new byte[0];\n var rho = new byte[bufferSize];\n var EntropyThread = new Thread(() =>\n {\n var el = new List<string>();\n var hashBytes = new HashSet<byte[]>(new ArrayComparer());\n var sw = new Stopwatch();\n sw.Start();\n AddLocalUserData(hashBytes);\n AddProcessInformation(hashBytes, el);\n AddJitterInformation(hashBytes);\n GetWmiInfor(\"Win32_PerfRawData_PerfOS_Processor\", hashBytes);\n GetWmiInfor(\"Win32_PerfRawData_PerfOS_System\", hashBytes);\n GetWmiInfor(\"Win32_PerfRawData_Counters_ProcessorInformation\", hashBytes);\n GetWmiInfor(\"Win32_PerfRawData_Counters_Synchronization\", hashBytes);\n GetWmiInfor(\"Win32_PerfRawData_PerfDisk_LogicalDisk\", hashBytes);\n GetWmiInfor(\"Win32_PerfRawData_PerfDisk_PhysicalDisk\", hashBytes);\n GetWmiInfor(\"Win32_PerfFormattedData_PerfOS_Cache\", hashBytes);\n GetWmiInfor(\"Win32_PerfFormattedData_PerfOS_Memory\", hashBytes);\n GetWmiInfor(\"Win32_PerfFormattedData_PerfOS_Objects\", hashBytes);\n CpuInfo(hashBytes);\n sw.Stop();\n hashBytes.Add(sw.Elapsed.Ticks.GetBytes());\n rhb = HashBytesToArray(hashBytes);\n AddHistogramInforamation(rhb, hashBytes);\n rhb = HashBytesToArray(hashBytes);\n hashBytes.Clear();\n var div = bufferSize \/ Sha3BitBufferMoveSize;\n if (div * Sha3BitBufferMoveSize < bufferSize)\n div++;\n var segSize = rhb.Length \/ div;\n var aseg = new byte[segSize];\n for (var i = 0; i < div; ++i)\n {\n Buffer.BlockCopy(rhb, i * segSize, aseg, 0, segSize);\n Buffer.BlockCopy(new SHA3Managed(Sha3BitSize).ComputeHash(aseg), 0, rho, i * Sha3BitBufferMoveSize, Sha3BitBufferMoveSize);\n }\n }) {Priority = ThreadPriority.Highest};\n EntropyThread.Start();\n EntropyThread.Join();\n return rho;\n }\n private static void GetWmiInfor(string key, HashSet<byte[]> hashBytes)\n {\n var wmi = new WMIServices();\n wmi.GetProperties(key);\n foreach (var v in wmi.EntriesList)\n foreach (var p in v.Value)\n hashBytes.Add(p.GetBytesObject());\n }\n private static void CpuInfo(HashSet<byte[]> hashBytes)\n {\n var lhashBytes = new HashSet<byte[]>();\n var dump = CpuTotalPc.CPULoad;\n do\n {\n var l = (byte) CpuTotalPc.CPULoad;\n if (l != 0)\n lhashBytes.Add(new[] {l});\n Thread.Sleep(1);\n } while (lhashBytes.Count < CpuDataLength);\n foreach (var b in lhashBytes)\n hashBytes.Add(b);\n }\n private static void AddHistogramInforamation(byte[] rhb, HashSet<byte[]> hashBytes)\n {\n var FFTArray = Histogram(rhb);\n for (var i = 0; i < FFTArray.Length; ++i)\n hashBytes.Add(FFTArray[i].GetBytes());\n }\n private static void AddJitterInformation(HashSet<byte[]> hashBytes)\n {\n hashBytes.Add(new JitterEx(JitterDataSize).GetBuffer());\n }\n private static void AddProcessInformation(HashSet<byte[]> hashBytes, List<string> el)\n {\n foreach (var p in Process.GetProcesses())\n {\n try\n {\n hashBytes.Add(p.Id.GetBytes());\n }\n catch (Exception ex)\n {\n el.Add($\"{ex.Message} hashBytes.Add(p.Id.GetBytes())\");\n }\n try\n {\n hashBytes.Add(p.HandleCount.GetBytes());\n }\n catch (Exception ex)\n {\n el.Add($\"{ex.Message} hashBytes.Add(p.HandleCount.GetBytes())\");\n }\n try\n {\n hashBytes.Add(p.NonpagedSystemMemorySize64.GetBytes());\n }\n catch (Exception ex)\n {\n el.Add($\"{ex.Message} hashBytes.Add(p.NonpagedSystemMemorySize64.GetBytes())\");\n }\n try\n {\n hashBytes.Add(p.PagedMemorySize64.GetBytes());\n }\n catch (Exception ex)\n {\n el.Add($\"{ex.Message} hashBytes.Add(p.PagedMemorySize64.GetBytes())\");\n }\n try\n {\n hashBytes.Add(p.PagedSystemMemorySize64.GetBytes());\n }\n catch (Exception ex)\n {\n el.Add($\"{ex.Message} hashBytes.Add(p.PagedSystemMemorySize64.GetBytes())\");\n }\n try\n {\n hashBytes.Add(p.PeakPagedMemorySize64.GetBytes());\n }\n catch (Exception ex)\n {\n el.Add($\"{ex.Message} hashBytes.Add(p.PeakPagedMemorySize64.GetBytes())\");\n }\n try\n {\n hashBytes.Add(p.PeakVirtualMemorySize64.GetBytes());\n }\n catch (Exception ex)\n {\n el.Add($\"{ex.Message} hashBytes.Add(p.PeakVirtualMemorySize64.GetBytes())\");\n }\n try\n {\n hashBytes.Add(p.PeakWorkingSet64.GetBytes());\n }\n catch (Exception ex)\n {\n el.Add($\"{ex.Message} hashBytes.Add(p.PeakWorkingSet64.GetBytes()\");\n }\n try\n {\n hashBytes.Add(p.PrivateMemorySize64.GetBytes());\n }\n catch (Exception ex)\n {\n el.Add($\"{ex.Message} hashBytes.Add(p.PrivateMemorySize64.GetBytes())\");\n }\n try\n {\n hashBytes.Add(p.ProcessName.GetBytes());\n }\n catch (Exception ex)\n {\n el.Add($\"{ex.Message} hashBytes.Add(p.ProcessName.GetBytes())\");\n }\n try\n {\n hashBytes.Add(p.Threads.Count.GetBytes());\n }\n catch (Exception ex)\n {\n el.Add($\"{ex.Message} hashBytes.Add(p.Threads.Count.GetBytes())\");\n }\n try\n {\n hashBytes.Add(p.SessionId.GetBytes());\n }\n catch (Exception ex)\n {\n el.Add($\"{ex.Message} hashBytes.Add(p.SessionId.GetBytes())\");\n }\n for (var i = 0; i < p.Threads.Count; i++)\n {\n try\n {\n hashBytes.Add(p.Threads[i].CurrentPriority.GetBytes());\n }\n catch (Exception ex)\n {\n el.Add($\"{ex.Message} hashBytes.Add(p.Threads[i].CurrentPriority.GetBytes())\");\n }\n try\n {\n hashBytes.Add(p.Threads[i].Id.GetBytes());\n }\n catch (Exception ex)\n {\n el.Add($\"{ex.Message} hashBytes.Add(p.Threads[i].Id.GetBytes())\");\n }\n try\n {\n hashBytes.Add(p.Threads[i].StartAddress.ToString().GetBytes());\n }\n catch (Exception ex)\n {\n el.Add($\"{ex.Message} hashBytes.Add(p.Threads[i].StartAddress.ToString().GetBytes())\");\n }\n }\n try\n {\n hashBytes.Add(p.VirtualMemorySize64.GetBytes());\n }\n catch (Exception ex)\n {\n el.Add($\"{ex.Message} hashBytes.Add(p.VirtualMemorySize64.GetBytes()))\");\n }\n try\n {\n hashBytes.Add(p.WorkingSet64.GetBytes());\n }\n catch (Exception ex)\n {\n el.Add($\"{ex.Message} hashBytes.Add(p.WorkingSet64.GetBytes()))\");\n }\n }\n }\n private static void AddLocalUserData(HashSet<byte[]> hashBytes)\n {\n hashBytes.Add(Process.GetCurrentProcess().Id.GetBytes());\n hashBytes.Add(Thread.CurrentThread.ManagedThreadId.GetBytes());\n hashBytes.Add(GetTickCount().GetBytes());\n hashBytes.Add(Process.GetProcesses().Length.GetBytes());\n QueryPerformanceFrequency(out var freq);\n hashBytes.Add(freq.GetBytes());\n for (var i = 0; i < 128; i++)\n {\n QueryPerformanceCounter(out var query);\n hashBytes.Add(query.GetBytes());\n }\n hashBytes.Add(DateTime.Now.Ticks.GetBytes());\n hashBytes.Add(Environment.UserName.GetBytes());\n hashBytes.Add(Environment.MachineName.GetBytes());\n hashBytes.Add(Environment.OSVersion.ToString().GetBytes());\n hashBytes.Add(Environment.ProcessorCount.GetBytes());\n hashBytes.Add(Environment.UserDomainName.GetBytes());\n hashBytes.Add(Environment.StackTrace.GetBytes());\n hashBytes.Add(Environment.GetLogicalDrives().GetBytes());\n hashBytes.Add(MemoryInfo.GetValues().GetBytesObjectSerial());\n hashBytes.Add(MemoryInfo.GetSystemPerformanceInformation().GetBytesObjectSerial());\n }\n private static byte[] HashBytesToArray(HashSet<byte[]> hashBytes)\n {\n byte[] rhb;\n var ptr = 0;\n var count = 0;\n var arr = hashBytes.ToArray();\n foreach (var hba in arr)\n count += hba.Length;\n hashBytes.Add(count.GetBytes());\n arr = hashBytes.ToArray();\n count += arr.Last().Length;\n rhb = new byte[count];\n foreach (var hba in arr)\n {\n Buffer.BlockCopy(hba, 0, rhb, ptr, hba.Length);\n ptr += hba.Length;\n }\n return rhb;\n }\n private static int[] Histogram(IEnumerable<byte> ba)\n {\n var map = new int[256];\n foreach (var i in ba)\n map[i]++;\n return map;\n }\n}<\/pre>\n","protected":false},"excerpt":{"rendered":"Using PC Data Creates a Strong Entropy Source<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[2],"tags":[5,44,45,43],"_links":{"self":[{"href":"https:\/\/michaeljohnsteiner.com\/index.php\/wp-json\/wp\/v2\/posts\/101"}],"collection":[{"href":"https:\/\/michaeljohnsteiner.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/michaeljohnsteiner.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/michaeljohnsteiner.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/michaeljohnsteiner.com\/index.php\/wp-json\/wp\/v2\/comments?post=101"}],"version-history":[{"count":1,"href":"https:\/\/michaeljohnsteiner.com\/index.php\/wp-json\/wp\/v2\/posts\/101\/revisions"}],"predecessor-version":[{"id":102,"href":"https:\/\/michaeljohnsteiner.com\/index.php\/wp-json\/wp\/v2\/posts\/101\/revisions\/102"}],"wp:attachment":[{"href":"https:\/\/michaeljohnsteiner.com\/index.php\/wp-json\/wp\/v2\/media?parent=101"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/michaeljohnsteiner.com\/index.php\/wp-json\/wp\/v2\/categories?post=101"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/michaeljohnsteiner.com\/index.php\/wp-json\/wp\/v2\/tags?post=101"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}