internal static List <ChecksumType> GetChecksums(byte[] data) { Adler32Context adler32ctxData = new Adler32Context(); Crc16Context crc16ctxData = new Crc16Context(); Crc32Context crc32ctxData = new Crc32Context(); Crc64Context crc64ctxData = new Crc64Context(); Md5Context md5ctxData = new Md5Context(); Ripemd160Context ripemd160ctxData = new Ripemd160Context(); Sha1Context sha1ctxData = new Sha1Context(); Sha256Context sha256ctxData = new Sha256Context(); Sha384Context sha384ctxData = new Sha384Context(); Sha512Context sha512ctxData = new Sha512Context(); SpamSumContext ssctxData = new SpamSumContext(); Thread adlerThreadData = new Thread(updateAdler); Thread crc16ThreadData = new Thread(updateCRC16); Thread crc32ThreadData = new Thread(updateCRC32); Thread crc64ThreadData = new Thread(updateCRC64); Thread md5ThreadData = new Thread(updateMD5); Thread ripemd160ThreadData = new Thread(updateRIPEMD160); Thread sha1ThreadData = new Thread(updateSHA1); Thread sha256ThreadData = new Thread(updateSHA256); Thread sha384ThreadData = new Thread(updateSHA384); Thread sha512ThreadData = new Thread(updateSHA512); Thread spamsumThreadData = new Thread(updateSpamSum); adlerPacket adlerPktData = new adlerPacket(); crc16Packet crc16PktData = new crc16Packet(); crc32Packet crc32PktData = new crc32Packet(); crc64Packet crc64PktData = new crc64Packet(); md5Packet md5PktData = new md5Packet(); ripemd160Packet ripemd160PktData = new ripemd160Packet(); sha1Packet sha1PktData = new sha1Packet(); sha256Packet sha256PktData = new sha256Packet(); sha384Packet sha384PktData = new sha384Packet(); sha512Packet sha512PktData = new sha512Packet(); spamsumPacket spamsumPktData = new spamsumPacket(); adler32ctxData.Init(); adlerPktData.context = adler32ctxData; crc16ctxData.Init(); crc16PktData.context = crc16ctxData; crc32ctxData.Init(); crc32PktData.context = crc32ctxData; crc64ctxData.Init(); crc64PktData.context = crc64ctxData; md5ctxData.Init(); md5PktData.context = md5ctxData; ripemd160ctxData.Init(); ripemd160PktData.context = ripemd160ctxData; sha1ctxData.Init(); sha1PktData.context = sha1ctxData; sha256ctxData.Init(); sha256PktData.context = sha256ctxData; sha384ctxData.Init(); sha384PktData.context = sha384ctxData; sha512ctxData.Init(); sha512PktData.context = sha512ctxData; ssctxData.Init(); spamsumPktData.context = ssctxData; adlerPktData.data = data; adlerThreadData.Start(adlerPktData); crc16PktData.data = data; crc16ThreadData.Start(crc16PktData); crc32PktData.data = data; crc32ThreadData.Start(crc32PktData); crc64PktData.data = data; crc64ThreadData.Start(crc64PktData); md5PktData.data = data; md5ThreadData.Start(md5PktData); ripemd160PktData.data = data; ripemd160ThreadData.Start(ripemd160PktData); sha1PktData.data = data; sha1ThreadData.Start(sha1PktData); sha256PktData.data = data; sha256ThreadData.Start(sha256PktData); sha384PktData.data = data; sha384ThreadData.Start(sha384PktData); sha512PktData.data = data; sha512ThreadData.Start(sha512PktData); spamsumPktData.data = data; spamsumThreadData.Start(spamsumPktData); while (adlerThreadData.IsAlive || crc16ThreadData.IsAlive || crc32ThreadData.IsAlive || crc64ThreadData.IsAlive || md5ThreadData.IsAlive || ripemd160ThreadData.IsAlive || sha1ThreadData.IsAlive || sha256ThreadData.IsAlive || sha384ThreadData.IsAlive || sha512ThreadData.IsAlive || spamsumThreadData.IsAlive) { } List <ChecksumType> dataChecksums = new List <ChecksumType>(); ChecksumType chk = new ChecksumType { type = ChecksumTypeType.adler32, Value = adler32ctxData.End() }; dataChecksums.Add(chk); chk = new ChecksumType { type = ChecksumTypeType.crc16, Value = crc16ctxData.End() }; dataChecksums.Add(chk); chk = new ChecksumType { type = ChecksumTypeType.crc32, Value = crc32ctxData.End() }; dataChecksums.Add(chk); chk = new ChecksumType { type = ChecksumTypeType.crc64, Value = crc64ctxData.End() }; dataChecksums.Add(chk); chk = new ChecksumType { type = ChecksumTypeType.md5, Value = md5ctxData.End() }; dataChecksums.Add(chk); chk = new ChecksumType { type = ChecksumTypeType.ripemd160, Value = ripemd160ctxData.End() }; dataChecksums.Add(chk); chk = new ChecksumType { type = ChecksumTypeType.sha1, Value = sha1ctxData.End() }; dataChecksums.Add(chk); chk = new ChecksumType { type = ChecksumTypeType.sha256, Value = sha256ctxData.End() }; dataChecksums.Add(chk); chk = new ChecksumType { type = ChecksumTypeType.sha384, Value = sha384ctxData.End() }; dataChecksums.Add(chk); chk = new ChecksumType { type = ChecksumTypeType.sha512, Value = sha512ctxData.End() }; dataChecksums.Add(chk); chk = new ChecksumType { type = ChecksumTypeType.spamsum, Value = ssctxData.End() }; dataChecksums.Add(chk); return(dataChecksums); }
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); }
internal List <ChecksumType> End() { List <ChecksumType> chks = new List <ChecksumType>(); ChecksumType chk = new ChecksumType { type = ChecksumTypeType.adler32, Value = adler32ctx.End() }; chks.Add(chk); chk = new ChecksumType { type = ChecksumTypeType.crc16, Value = crc16ctx.End() }; chks.Add(chk); chk = new ChecksumType { type = ChecksumTypeType.crc32, Value = crc32ctx.End() }; chks.Add(chk); chk = new ChecksumType { type = ChecksumTypeType.crc64, Value = crc64ctx.End() }; chks.Add(chk); chk = new ChecksumType { type = ChecksumTypeType.md5, Value = md5ctx.End() }; chks.Add(chk); chk = new ChecksumType { type = ChecksumTypeType.ripemd160, Value = ripemd160ctx.End() }; chks.Add(chk); chk = new ChecksumType { type = ChecksumTypeType.sha1, Value = sha1ctx.End() }; chks.Add(chk); chk = new ChecksumType { type = ChecksumTypeType.sha256, Value = sha256ctx.End() }; chks.Add(chk); chk = new ChecksumType { type = ChecksumTypeType.sha384, Value = sha384ctx.End() }; chks.Add(chk); chk = new ChecksumType { type = ChecksumTypeType.sha512, Value = sha512ctx.End() }; chks.Add(chk); chk = new ChecksumType { type = ChecksumTypeType.spamsum, Value = ssctx.End() }; chks.Add(chk); return(chks); }