CPU RAM Jitter Driven RNG Data Source<\/p>\n\n\n\n
using System;\nusing System.Diagnostics;\nusing System.Security.Cryptography;\nusing System.Threading;\npublic class RngJitterSource : RandomNumberGenerator\n{\n \/\/\/ <summary>\n \/\/\/ Recalculate buffer every 1000 milliseconds\n \/\/\/ <\/summary>\n private const int ReSecureThresholdBf = 1000;\n private readonly SHA3ModInt _algorithm;\n private readonly object _cacheLock = new object();\n private readonly int _moveSize;\n \/\/\/ <summary>\n \/\/\/ Just in case you need access to the underlying data\n \/\/\/ <\/summary>\n public readonly JitterEx Jitter;\n private readonly Stopwatch tmr;\n private byte[] _cacheBuffer;\n private int _cacheSize;\n private volatile int _ptr;\n private volatile int BytesRemainingInCache;\n \/\/\/ <summary>\n \/\/\/ If you want to use this as a flat memory pool\n \/\/\/ Use in conjunction with DataReady -- DataReady.WaitOne(); -- use data\n \/\/\/ <\/summary>\n public volatile byte[] Cache;\n public int cacheFills;\n private Thread CacheThread;\n \/\/\/ <summary>\n \/\/\/ See Cache above\n \/\/\/ <\/summary>\n public AutoResetEvent DataReady = new AutoResetEvent(false);\n private bool Filled;\n public int ResecureCount;\n public RngJitterSource() : this(1024 * 1024, 1024, 256, 4)\n {\n }\n public RngJitterSource(int cacheSize) : this(cacheSize, 1024, 256, 4)\n {\n }\n public RngJitterSource(int cacheSize, int seedSize) : this(cacheSize, seedSize, 256, 4)\n {\n }\n public RngJitterSource(int cacheSize, int seedSize, int sha3Size) : this(cacheSize, seedSize, sha3Size, 4)\n {\n }\n public RngJitterSource(int cacheSize, int seedSize, int sha3Size, int sha3Rounds)\n {\n _cacheSize = cacheSize;\n Jitter = new JitterEx();\n _cacheBuffer = new byte[seedSize];\n Jitter.GetBytes(_cacheBuffer);\n Cache = new byte[_cacheSize];\n _ptr = 0;\n BytesRemainingInCache = 0;\n _algorithm = new SHA3ModInt(sha3Size, sha3Rounds);\n _moveSize = _algorithm.ComputeHash(2.GetBytes()).Length;\n Filled = false;\n tmr = new Stopwatch();\n CacheThread = new Thread(KeepFullCache) {Priority = ThreadPriority.Highest};\n CacheThread.Start();\n }\n public void Abort()\n {\n CacheThread.Abort();\n }\n protected override void Dispose(bool disposing)\n {\n _algorithm.Dispose();\n }\n public override void GetBytes(byte[] data)\n {\n if (data.Length > _cacheSize)\n {\n _cacheSize = data.Length;\n Cache = new byte[_cacheSize];\n _ptr = 0;\n BytesRemainingInCache = 0;\n if (CacheThread.IsAlive)\n CacheThread.Abort();\n DataReady = new AutoResetEvent(false);\n CacheThread = new Thread(KeepFullCache) {Priority = ThreadPriority.Highest};\n CacheThread.Start();\n }\n while (_ptr < data.Length)\n Thread.Sleep(10);\n DataReady.WaitOne();\n Buffer.BlockCopy(Cache, _ptr - data.Length, data, 0, data.Length);\n _ptr -= data.Length;\n BytesRemainingInCache -= data.Length;\n }\n private void KeepFullCache()\n {\n while (true)\n if (BytesRemainingInCache < _moveSize)\n lock (_cacheLock)\n {\n var moveSize = _moveSize;\n cacheFills++;\n var bufferFills = 0;\n tmr.Start();\n while (true)\n {\n bufferFills++;\n if (tmr.Elapsed.TotalMilliseconds >= ReSecureThresholdBf)\n {\n Jitter.GetBytes(_cacheBuffer);\n tmr.Restart();\n ResecureCount++;\n }\n var remainingBytesToMove = _cacheSize - _ptr;\n if (remainingBytesToMove < moveSize)\n moveSize = remainingBytesToMove;\n if (remainingBytesToMove <= 0 || _ptr >= _cacheSize)\n break;\n _cacheBuffer = _algorithm.ComputeHash(_cacheBuffer);\n Buffer.BlockCopy(_cacheBuffer, 0, Cache, _ptr, moveSize);\n _ptr += moveSize;\n }\n tmr.Stop();\n _ptr = _cacheSize;\n BytesRemainingInCache = _cacheSize;\n DataReady.Set();\n }\n else\n DataReady.Set();\n }\n}<\/pre>\n","protected":false},"excerpt":{"rendered":"CPU RAM Jitter Driven RNG Data 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":[42,15,47,44,40,49,45,48],"_links":{"self":[{"href":"https:\/\/michaeljohnsteiner.com\/index.php\/wp-json\/wp\/v2\/posts\/108"}],"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=108"}],"version-history":[{"count":2,"href":"https:\/\/michaeljohnsteiner.com\/index.php\/wp-json\/wp\/v2\/posts\/108\/revisions"}],"predecessor-version":[{"id":111,"href":"https:\/\/michaeljohnsteiner.com\/index.php\/wp-json\/wp\/v2\/posts\/108\/revisions\/111"}],"wp:attachment":[{"href":"https:\/\/michaeljohnsteiner.com\/index.php\/wp-json\/wp\/v2\/media?parent=108"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/michaeljohnsteiner.com\/index.php\/wp-json\/wp\/v2\/categories?post=108"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/michaeljohnsteiner.com\/index.php\/wp-json\/wp\/v2\/tags?post=108"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}