// Static Methods /// <summary> /// Generates an "Authenticator" value used in a RADIUS request packet sent by the client to server. /// </summary> /// <param name="sharedSecret">The shared secret to be used in generating the output.</param> /// <returns>A byte array.</returns> public static byte[] CreateRequestAuthenticator(string sharedSecret) { // We create a input buffer that'll be used to create a 16-byte value using the RSA MD5 algorithm. // Since the output value (The Authenticator) has to be unique over the life of the shared secret, // we prepend a randomly generated "salt" text to ensure the uniqueness of the output value. byte[] randomBuffer = new byte[16]; byte[] secretBuffer = Encoding.GetBytes(sharedSecret); Random.GetBytes(randomBuffer); return(new MD5CryptoServiceProvider().ComputeHash(randomBuffer.Combine(secretBuffer))); }
private string IssueAuthenticationToken(string username, string password) { byte[] buffer = new byte[9]; // Generate the selector for the token Random.GetBytes(buffer); string selector = Convert.ToBase64String(buffer); // Generate the validator for the token Random.GetBytes(buffer); string validator = Convert.ToBase64String(buffer); // Determine where the credential cache is located ConfigurationFile configFile = ConfigurationFile.Current; CategorizedSettingsElementCollection systemSettings = configFile.Settings["systemSettings"]; string configurationCachePath = systemSettings["ConfigurationCachePath"].Value; string credentialCachePath = Path.Combine(configurationCachePath, "CredentialCache.bin"); // Open the credential cache lock (s_credentialCacheLock) { using (FileBackedDictionary <string, Credential> credentialCache = new FileBackedDictionary <string, Credential>(credentialCachePath)) { // Clean out expired credentials before issuing a new one DateTime now = DateTime.UtcNow; List <string> expiredSelectors = credentialCache .Where(kvp => now >= kvp.Value.Expiration) .Select(kvp => kvp.Key) .ToList(); foreach (string expiredSelector in expiredSelectors) { credentialCache.Remove(expiredSelector); } credentialCache.Compact(); // Enter the new token into the credential cache credentialCache[selector] = new Credential { Validator = validator, Username = username, Password = password, Expiration = DateTime.UtcNow.AddDays(30.0D) }; } } return($"{selector}:{validator}"); }
private static byte[] GenerateNewToken(int bitLength) { byte[] data = new byte[bitLength / 8]; Random.GetBytes(data); return(data); }
public void DataSetSerialization_ValidCase() { const int RowCount = ushort.MaxValue; // * 10;// * 20; //Act StringBuilder results = new StringBuilder(); Ticks stopTime, startTime; DataSet sourceDataSet = new DataSet("source"); DataTable table = sourceDataSet.Tables.Add("table1"); table.Columns.Add("col0", typeof(string)); table.Columns.Add("col1", typeof(int)); table.Columns.Add("col2", typeof(bool)); table.Columns.Add("col3", typeof(Guid)); table.Columns.Add("col4", typeof(DateTime)); table.Columns.Add("col5", typeof(TimeSpan)); table.Columns.Add("col6", typeof(byte[])); startTime = DateTime.UtcNow.Ticks; for (int i = 0; i < RowCount; i++) { DataRow row = table.NewRow(); if (Random.Boolean || Random.Boolean) { row[0] = new string((char)Random.Int16Between(32, 128), Random.Int16Between(5, 30)); } else { row[0] = DBNull.Value; } row[1] = Random.Int32; row[2] = Random.Boolean; if (Random.Boolean || Random.Boolean) { row[3] = Guid.NewGuid(); } else { row[3] = DBNull.Value; } row[4] = DateTime.UtcNow; row[5] = new TimeSpan(Random.Int64Between(Ticks.PerSecond, Ticks.PerHour)); byte[] bytes = null; if (Random.Boolean || Random.Boolean) { bytes = new byte[Random.Int16Between(0, 1000)]; Random.GetBytes(bytes); } row[6] = bytes; table.Rows.Add(row); } table = sourceDataSet.Tables.Add("table2"); table.Columns.Add("col0", typeof(ulong)); table.Columns.Add("col1", typeof(double)); table.Columns.Add("col2", typeof(byte)); table.Columns.Add("col3", typeof(char)); table.Columns.Add("col4", typeof(object)); for (int i = 0; i < Random.Int32Between(100, 500); i++) { DataRow row = table.NewRow(); if (Random.Boolean || Random.Boolean) { row[0] = Random.UInt64; } else { row[0] = DBNull.Value; } row[1] = Random.Number; row[2] = Random.Byte; if (Random.Boolean || Random.Boolean) { row[3] = (char)Random.Int16Between(32, 1024); } else { row[3] = DBNull.Value; } row[4] = Guid.NewGuid().ToString(); table.Rows.Add(row); } stopTime = DateTime.UtcNow.Ticks; results.AppendFormat("Initial random sample dataset created with {0} rows. ({1})\r\n", RowCount, (stopTime - startTime).ToElapsedTimeString(4)); results.AppendLine(); FileStream stream; string path = FilePath.GetApplicationDataFolder(); if (!Directory.Exists(path)) { Directory.CreateDirectory(path); } string fileName = Path.Combine(path, "DataSet.bin"); startTime = DateTime.UtcNow.Ticks; stream = new FileStream(fileName, FileMode.Create); sourceDataSet.SerializeToStream(stream); stream.Flush(); stream.Close(); stream.Dispose(); stopTime = DateTime.UtcNow.Ticks; results.AppendFormat("Dataset binary serialization time: {0}\r\n", (stopTime - startTime).ToElapsedTimeString(4)); string xmlFileName = Path.Combine(path, "DataSet.xml"); startTime = DateTime.UtcNow.Ticks; sourceDataSet.WriteXml(xmlFileName, XmlWriteMode.WriteSchema); stopTime = DateTime.UtcNow.Ticks; results.AppendFormat("Dataset XML serialization time: {0}\r\n", (stopTime - startTime).ToElapsedTimeString(4)); results.AppendLine(); DataSet destinationDataSet; startTime = DateTime.UtcNow.Ticks; stream = new FileStream(fileName, FileMode.Open); destinationDataSet = stream.DeserializeToDataSet(); stream.Close(); stream.Dispose(); stopTime = DateTime.UtcNow.Ticks; results.AppendFormat("Dataset binary deserialization time: {0}\r\n", (stopTime - startTime).ToElapsedTimeString(4)); DataSet tempDataSet; startTime = DateTime.UtcNow.Ticks; tempDataSet = new DataSet(); tempDataSet.ReadXml(xmlFileName); stopTime = DateTime.UtcNow.Ticks; results.AppendFormat("Dataset XML deserialization time: {0}\r\n", (stopTime - startTime).ToElapsedTimeString(4)); results.AppendLine(); startTime = DateTime.UtcNow.Ticks; // Validate that source and destination dataset are the same Assert.AreEqual(sourceDataSet.DataSetName, destinationDataSet.DataSetName); Assert.AreEqual(sourceDataSet.Tables.Count, destinationDataSet.Tables.Count); foreach (DataTable sourceTable in sourceDataSet.Tables) { bool tableExists = destinationDataSet.Tables.Contains(sourceTable.TableName); Assert.IsTrue(tableExists); DataTable destinationTable = destinationDataSet.Tables[sourceTable.TableName]; Assert.AreEqual(sourceTable.Columns.Count, destinationTable.Columns.Count); foreach (DataColumn sourceColumn in sourceTable.Columns) { bool columnExists = destinationTable.Columns.Contains(sourceColumn.ColumnName); Assert.IsTrue(columnExists); DataColumn destinationColumn = destinationTable.Columns[sourceColumn.ColumnName]; Assert.IsTrue(sourceColumn.DataType == destinationColumn.DataType || (sourceColumn.DataType == typeof(object) && destinationColumn.DataType == typeof(string))); } Assert.AreEqual(sourceTable.Rows.Count, destinationTable.Rows.Count); for (int i = 0; i < sourceTable.Rows.Count; i++) { DataRow sourceRow = sourceTable.Rows[i]; DataRow destinationRow = destinationTable.Rows[i]; for (int j = 0; j < sourceTable.Columns.Count; j++) { if (sourceRow[j] != DBNull.Value && destinationRow[j] != DBNull.Value) { byte[] bytes = sourceRow[j] as byte[]; if ((object)bytes != null) { Assert.IsTrue(bytes.CompareTo((byte[])destinationRow[j]) == 0); } else { Assert.AreEqual(sourceRow[j], destinationRow[j]); } } } } } stopTime = DateTime.UtcNow.Ticks; results.AppendFormat("Dataset validation time: {0}\r\n", (stopTime - startTime).ToElapsedTimeString(4)); results.AppendLine(); FileInfo xmlFile = new FileInfo(xmlFileName); FileInfo binFile = new FileInfo(fileName); results.AppendFormat("Binary serialization size = {0}\r\n", SI2.ToScaledString(binFile.Length, "B")); results.AppendFormat("XML serialization size = {0}\r\n", SI2.ToScaledString(xmlFile.Length, "B")); results.AppendFormat("Size Improvement = {0:0.00%}\r\n", (xmlFile.Length - binFile.Length) / (double)xmlFile.Length); System.Console.WriteLine(results.ToString()); }
static CryptoSystem() { // Added entropy makes tokens unique to AppDomain instance of this class Random.GetBytes(s_entropy); }