Exemplo n.º 1
0
        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);
        }
Exemplo n.º 2
0
        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);
        }
Exemplo n.º 3
0
        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);
        }