public void SpamSumRandomInstance() { byte[] data = new byte[1048576]; FileStream fs = new FileStream(Path.Combine(Consts.TestFilesRoot, "checksums", "random"), FileMode.Open, FileAccess.Read); fs.Read(data, 0, 1048576); fs.Close(); fs.Dispose(); IChecksum ctx = new SpamSumContext(); ctx.Update(data); string result = ctx.End(); Assert.AreEqual(EXPECTED_RANDOM, result); }
public void SpamSumEmptyInstance() { byte[] data = new byte[1048576]; var fs = new FileStream(Path.Combine(Consts.TEST_FILES_ROOT, "Checksum test files", "empty"), FileMode.Open, FileAccess.Read); fs.Read(data, 0, 1048576); fs.Close(); fs.Dispose(); IChecksum ctx = new SpamSumContext(); ctx.Update(data); string result = ctx.End(); Assert.AreEqual(EXPECTED_EMPTY, result); }
public static BenchmarkResults Do(int bufferSize, int blockSize) { BenchmarkResults results = new BenchmarkResults { Entries = new Dictionary <string, BenchmarkEntry>(), MinMemory = long.MaxValue, MaxMemory = 0, SeparateTime = 0 }; MemoryStream ms = new MemoryStream(bufferSize); Random rnd = new Random(); DateTime start; DateTime end; start = DateTime.Now; InitProgress(); for (int i = 0; i < bufferSize / blockSize; i++) { UpdateProgress("Writing block {0} of {1} with random data.", i + 1, bufferSize / blockSize); byte[] tmp = new byte[blockSize]; rnd.NextBytes(tmp); ms.Write(tmp, 0, blockSize); } EndProgress(); end = DateTime.Now; results.FillTime = (end - start).TotalSeconds; results.FillSpeed = bufferSize / 1048576.0 / (end - start).TotalSeconds; ms.Seek(0, SeekOrigin.Begin); long mem = GC.GetTotalMemory(false); if (mem > results.MaxMemory) { results.MaxMemory = mem; } if (mem < results.MinMemory) { results.MinMemory = mem; } start = DateTime.Now; InitProgress(); for (int i = 0; i < bufferSize / blockSize; i++) { UpdateProgress("Reading block {0} of {1}.", i + 1, bufferSize / blockSize); byte[] tmp = new byte[blockSize]; ms.Read(tmp, 0, blockSize); } EndProgress(); end = DateTime.Now; mem = GC.GetTotalMemory(false); if (mem > results.MaxMemory) { results.MaxMemory = mem; } if (mem < results.MinMemory) { results.MinMemory = mem; } results.ReadTime = (end - start).TotalSeconds; results.ReadSpeed = bufferSize / 1048576.0 / (end - start).TotalSeconds; #region Adler32 IChecksum ctx = new Adler32Context(); ms.Seek(0, SeekOrigin.Begin); mem = GC.GetTotalMemory(false); if (mem > results.MaxMemory) { results.MaxMemory = mem; } if (mem < results.MinMemory) { results.MinMemory = mem; } start = DateTime.Now; InitProgress(); for (int i = 0; i < bufferSize / blockSize; i++) { UpdateProgress("Checksumming block {0} of {1} with Adler32.", i + 1, bufferSize / blockSize); byte[] tmp = new byte[blockSize]; ms.Read(tmp, 0, blockSize); ctx.Update(tmp); } EndProgress(); ctx.End(); end = DateTime.Now; mem = GC.GetTotalMemory(false); if (mem > results.MaxMemory) { results.MaxMemory = mem; } if (mem < results.MinMemory) { results.MinMemory = mem; } results.Entries.Add("Adler32", new BenchmarkEntry { TimeSpan = (end - start).TotalSeconds, Speed = bufferSize / 1048576.0 / (end - start).TotalSeconds }); results.SeparateTime += (end - start).TotalSeconds; #endregion Adler32 #region Fletcher16 ctx = new Fletcher16Context(); ms.Seek(0, SeekOrigin.Begin); mem = GC.GetTotalMemory(false); if (mem > results.MaxMemory) { results.MaxMemory = mem; } if (mem < results.MinMemory) { results.MinMemory = mem; } start = DateTime.Now; InitProgress(); for (int i = 0; i < bufferSize / blockSize; i++) { UpdateProgress("Checksumming block {0} of {1} with Fletcher-16.", i + 1, bufferSize / blockSize); byte[] tmp = new byte[blockSize]; ms.Read(tmp, 0, blockSize); ctx.Update(tmp); } EndProgress(); ctx.End(); end = DateTime.Now; mem = GC.GetTotalMemory(false); if (mem > results.MaxMemory) { results.MaxMemory = mem; } if (mem < results.MinMemory) { results.MinMemory = mem; } results.Entries.Add("Fletcher16", new BenchmarkEntry { TimeSpan = (end - start).TotalSeconds, Speed = bufferSize / 1048576.0 / (end - start).TotalSeconds }); results.SeparateTime += (end - start).TotalSeconds; #endregion Fletcher16 #region Fletcher32 ctx = new Fletcher32Context(); ms.Seek(0, SeekOrigin.Begin); mem = GC.GetTotalMemory(false); if (mem > results.MaxMemory) { results.MaxMemory = mem; } if (mem < results.MinMemory) { results.MinMemory = mem; } start = DateTime.Now; InitProgress(); for (int i = 0; i < bufferSize / blockSize; i++) { UpdateProgress("Checksumming block {0} of {1} with Fletcher-32.", i + 1, bufferSize / blockSize); byte[] tmp = new byte[blockSize]; ms.Read(tmp, 0, blockSize); ctx.Update(tmp); } EndProgress(); ctx.End(); end = DateTime.Now; mem = GC.GetTotalMemory(false); if (mem > results.MaxMemory) { results.MaxMemory = mem; } if (mem < results.MinMemory) { results.MinMemory = mem; } results.Entries.Add("Fletcher32", new BenchmarkEntry { TimeSpan = (end - start).TotalSeconds, Speed = bufferSize / 1048576.0 / (end - start).TotalSeconds }); results.SeparateTime += (end - start).TotalSeconds; #endregion Fletcher32 #region CRC16 ctx = new Crc16Context(); ms.Seek(0, SeekOrigin.Begin); mem = GC.GetTotalMemory(false); if (mem > results.MaxMemory) { results.MaxMemory = mem; } if (mem < results.MinMemory) { results.MinMemory = mem; } start = DateTime.Now; InitProgress(); for (int i = 0; i < bufferSize / blockSize; i++) { UpdateProgress("Checksumming block {0} of {1} with CRC16.", i + 1, bufferSize / blockSize); byte[] tmp = new byte[blockSize]; ms.Read(tmp, 0, blockSize); ctx.Update(tmp); } EndProgress(); ctx.End(); end = DateTime.Now; mem = GC.GetTotalMemory(false); if (mem > results.MaxMemory) { results.MaxMemory = mem; } if (mem < results.MinMemory) { results.MinMemory = mem; } results.Entries.Add("CRC16", new BenchmarkEntry { TimeSpan = (end - start).TotalSeconds, Speed = bufferSize / 1048576.0 / (end - start).TotalSeconds }); results.SeparateTime += (end - start).TotalSeconds; #endregion CRC16 #region CRC32 ctx = new Crc32Context(); ms.Seek(0, SeekOrigin.Begin); mem = GC.GetTotalMemory(false); if (mem > results.MaxMemory) { results.MaxMemory = mem; } if (mem < results.MinMemory) { results.MinMemory = mem; } start = DateTime.Now; InitProgress(); for (int i = 0; i < bufferSize / blockSize; i++) { UpdateProgress("Checksumming block {0} of {1} with CRC32.", i + 1, bufferSize / blockSize); byte[] tmp = new byte[blockSize]; ms.Read(tmp, 0, blockSize); ctx.Update(tmp); } EndProgress(); ctx.End(); end = DateTime.Now; mem = GC.GetTotalMemory(false); if (mem > results.MaxMemory) { results.MaxMemory = mem; } if (mem < results.MinMemory) { results.MinMemory = mem; } results.Entries.Add("CRC32", new BenchmarkEntry { TimeSpan = (end - start).TotalSeconds, Speed = bufferSize / 1048576.0 / (end - start).TotalSeconds }); results.SeparateTime += (end - start).TotalSeconds; #endregion CRC32 #region CRC64 ctx = new Crc64Context(); ms.Seek(0, SeekOrigin.Begin); mem = GC.GetTotalMemory(false); if (mem > results.MaxMemory) { results.MaxMemory = mem; } if (mem < results.MinMemory) { results.MinMemory = mem; } start = DateTime.Now; InitProgress(); for (int i = 0; i < bufferSize / blockSize; i++) { UpdateProgress("Checksumming block {0} of {1} with CRC64.", i + 1, bufferSize / blockSize); byte[] tmp = new byte[blockSize]; ms.Read(tmp, 0, blockSize); ctx.Update(tmp); } EndProgress(); ctx.End(); end = DateTime.Now; mem = GC.GetTotalMemory(false); if (mem > results.MaxMemory) { results.MaxMemory = mem; } if (mem < results.MinMemory) { results.MinMemory = mem; } results.Entries.Add("CRC64", new BenchmarkEntry { TimeSpan = (end - start).TotalSeconds, Speed = bufferSize / 1048576.0 / (end - start).TotalSeconds }); results.SeparateTime += (end - start).TotalSeconds; #endregion CRC64 #region MD5 ctx = new Md5Context(); ms.Seek(0, SeekOrigin.Begin); mem = GC.GetTotalMemory(false); if (mem > results.MaxMemory) { results.MaxMemory = mem; } if (mem < results.MinMemory) { results.MinMemory = mem; } start = DateTime.Now; InitProgress(); for (int i = 0; i < bufferSize / blockSize; i++) { UpdateProgress("Checksumming block {0} of {1} with MD5.", i + 1, bufferSize / blockSize); byte[] tmp = new byte[blockSize]; ms.Read(tmp, 0, blockSize); ctx.Update(tmp); } EndProgress(); ctx.End(); end = DateTime.Now; mem = GC.GetTotalMemory(false); if (mem > results.MaxMemory) { results.MaxMemory = mem; } if (mem < results.MinMemory) { results.MinMemory = mem; } results.Entries.Add("MD5", new BenchmarkEntry { TimeSpan = (end - start).TotalSeconds, Speed = bufferSize / 1048576.0 / (end - start).TotalSeconds }); results.SeparateTime += (end - start).TotalSeconds; #endregion MD5 #if !NETSTANDARD2_0 #region RIPEMD160 ctx = new Ripemd160Context(); ms.Seek(0, SeekOrigin.Begin); mem = GC.GetTotalMemory(false); if (mem > results.MaxMemory) { results.MaxMemory = mem; } if (mem < results.MinMemory) { results.MinMemory = mem; } start = DateTime.Now; InitProgress(); for (int i = 0; i < bufferSize / blockSize; i++) { UpdateProgress("Checksumming block {0} of {1} with RIPEMD160.", i + 1, bufferSize / blockSize); byte[] tmp = new byte[blockSize]; ms.Read(tmp, 0, blockSize); ctx.Update(tmp); } EndProgress(); ctx.End(); end = DateTime.Now; mem = GC.GetTotalMemory(false); if (mem > results.MaxMemory) { results.MaxMemory = mem; } if (mem < results.MinMemory) { results.MinMemory = mem; } results.Entries.Add("RIPEMD160", new BenchmarkEntry { TimeSpan = (end - start).TotalSeconds, Speed = bufferSize / 1048576.0 / (end - start).TotalSeconds }); results.SeparateTime += (end - start).TotalSeconds; #endregion RIPEMD160 #endif #region SHA1 ctx = new Sha1Context(); ms.Seek(0, SeekOrigin.Begin); mem = GC.GetTotalMemory(false); if (mem > results.MaxMemory) { results.MaxMemory = mem; } if (mem < results.MinMemory) { results.MinMemory = mem; } start = DateTime.Now; InitProgress(); for (int i = 0; i < bufferSize / blockSize; i++) { UpdateProgress("Checksumming block {0} of {1} with SHA1.", i + 1, bufferSize / blockSize); byte[] tmp = new byte[blockSize]; ms.Read(tmp, 0, blockSize); ctx.Update(tmp); } EndProgress(); ctx.End(); end = DateTime.Now; mem = GC.GetTotalMemory(false); if (mem > results.MaxMemory) { results.MaxMemory = mem; } if (mem < results.MinMemory) { results.MinMemory = mem; } results.Entries.Add("SHA1", new BenchmarkEntry { TimeSpan = (end - start).TotalSeconds, Speed = bufferSize / 1048576.0 / (end - start).TotalSeconds }); results.SeparateTime += (end - start).TotalSeconds; #endregion SHA1 #region SHA256 ctx = new Sha256Context(); ms.Seek(0, SeekOrigin.Begin); mem = GC.GetTotalMemory(false); if (mem > results.MaxMemory) { results.MaxMemory = mem; } if (mem < results.MinMemory) { results.MinMemory = mem; } start = DateTime.Now; InitProgress(); for (int i = 0; i < bufferSize / blockSize; i++) { UpdateProgress("Checksumming block {0} of {1} with SHA256.", i + 1, bufferSize / blockSize); byte[] tmp = new byte[blockSize]; ms.Read(tmp, 0, blockSize); ctx.Update(tmp); } EndProgress(); ctx.End(); end = DateTime.Now; mem = GC.GetTotalMemory(false); if (mem > results.MaxMemory) { results.MaxMemory = mem; } if (mem < results.MinMemory) { results.MinMemory = mem; } results.Entries.Add("SHA256", new BenchmarkEntry { TimeSpan = (end - start).TotalSeconds, Speed = bufferSize / 1048576.0 / (end - start).TotalSeconds }); results.SeparateTime += (end - start).TotalSeconds; #endregion SHA256 #region SHA384 ctx = new Sha384Context(); ms.Seek(0, SeekOrigin.Begin); mem = GC.GetTotalMemory(false); if (mem > results.MaxMemory) { results.MaxMemory = mem; } if (mem < results.MinMemory) { results.MinMemory = mem; } start = DateTime.Now; InitProgress(); for (int i = 0; i < bufferSize / blockSize; i++) { UpdateProgress("Checksumming block {0} of {1} with SHA384.", i + 1, bufferSize / blockSize); byte[] tmp = new byte[blockSize]; ms.Read(tmp, 0, blockSize); ctx.Update(tmp); } EndProgress(); ctx.End(); end = DateTime.Now; mem = GC.GetTotalMemory(false); if (mem > results.MaxMemory) { results.MaxMemory = mem; } if (mem < results.MinMemory) { results.MinMemory = mem; } results.Entries.Add("SHA384", new BenchmarkEntry { TimeSpan = (end - start).TotalSeconds, Speed = bufferSize / 1048576.0 / (end - start).TotalSeconds }); results.SeparateTime += (end - start).TotalSeconds; #endregion SHA384 #region SHA512 ctx = new Sha512Context(); ms.Seek(0, SeekOrigin.Begin); mem = GC.GetTotalMemory(false); if (mem > results.MaxMemory) { results.MaxMemory = mem; } if (mem < results.MinMemory) { results.MinMemory = mem; } start = DateTime.Now; InitProgress(); for (int i = 0; i < bufferSize / blockSize; i++) { UpdateProgress("Checksumming block {0} of {1} with SHA512.", i + 1, bufferSize / blockSize); byte[] tmp = new byte[blockSize]; ms.Read(tmp, 0, blockSize); ctx.Update(tmp); } EndProgress(); ctx.End(); end = DateTime.Now; mem = GC.GetTotalMemory(false); if (mem > results.MaxMemory) { results.MaxMemory = mem; } if (mem < results.MinMemory) { results.MinMemory = mem; } results.Entries.Add("SHA512", new BenchmarkEntry { TimeSpan = (end - start).TotalSeconds, Speed = bufferSize / 1048576.0 / (end - start).TotalSeconds }); results.SeparateTime += (end - start).TotalSeconds; #endregion SHA512 #region SpamSum ctx = new SpamSumContext(); ms.Seek(0, SeekOrigin.Begin); mem = GC.GetTotalMemory(false); if (mem > results.MaxMemory) { results.MaxMemory = mem; } if (mem < results.MinMemory) { results.MinMemory = mem; } start = DateTime.Now; InitProgress(); for (int i = 0; i < bufferSize / blockSize; i++) { UpdateProgress("Checksumming block {0} of {1} with SpamSum.", i + 1, bufferSize / blockSize); byte[] tmp = new byte[blockSize]; ms.Read(tmp, 0, blockSize); ctx.Update(tmp); } EndProgress(); ctx.End(); end = DateTime.Now; mem = GC.GetTotalMemory(false); if (mem > results.MaxMemory) { results.MaxMemory = mem; } if (mem < results.MinMemory) { results.MinMemory = mem; } results.Entries.Add("SpamSum", new BenchmarkEntry { TimeSpan = (end - start).TotalSeconds, Speed = bufferSize / 1048576.0 / (end - start).TotalSeconds }); results.SeparateTime += (end - start).TotalSeconds; #endregion SpamSum #region Entropy ulong[] entTable = new ulong[256]; ms.Seek(0, SeekOrigin.Begin); mem = GC.GetTotalMemory(false); if (mem > results.MaxMemory) { results.MaxMemory = mem; } if (mem < results.MinMemory) { results.MinMemory = mem; } start = DateTime.Now; InitProgress(); for (int i = 0; i < bufferSize / blockSize; i++) { UpdateProgress("Entropying block {0} of {1}.", i + 1, bufferSize / blockSize); byte[] tmp = new byte[blockSize]; ms.Read(tmp, 0, blockSize); foreach (byte b in tmp) { entTable[b]++; } } EndProgress(); end = DateTime.Now; mem = GC.GetTotalMemory(false); if (mem > results.MaxMemory) { results.MaxMemory = mem; } if (mem < results.MinMemory) { results.MinMemory = mem; } results.EntropyTime = (end - start).TotalSeconds; results.EntropySpeed = bufferSize / 1048576.0 / (end - start).TotalSeconds; #endregion Entropy /* #region Multitasking * start = DateTime.Now; * Checksum allChecksums = new Checksum(); * InitProgress(); * for(int i = 0; i < bufferSize / blockSize; i++) * { * UpdateProgress("Checksumming block {0} of {1} with all algorithms at the same time.", i + 1, * bufferSize / blockSize); * byte[] tmp = new byte[blockSize]; * ms.Read(tmp, 0, blockSize); * * allChecksums.Update(tmp); * } * * EndProgress(); * * allChecksums.End(); * end = DateTime.Now; * mem = GC.GetTotalMemory(false); * if(mem > results.MaxMemory) results.MaxMemory = mem; * if(mem < results.MinMemory) results.MinMemory = mem; * * results.TotalTime = (end - start).TotalSeconds; * results.TotalSpeed = bufferSize / 1048576.0 / results.TotalTime; #endregion */ results.SeparateSpeed = bufferSize / 1048576.0 / results.SeparateTime; return(results); }