public static byte[] DESEncrypt(byte[] message, string password)
{
try
{
// Encode message and password
byte[] messageBytes = message;
byte[] passwordBytes = Encoding.UTF8.GetBytes(password);
// Set encryption settings -- Use password for both key and init. vector
DESCryptoServiceProvider provider = new DESCryptoServiceProvider();
ICryptoTransform transform = provider.CreateEncryptor(passwordBytes, passwordBytes);
CryptoStreamMode mode = CryptoStreamMode.Write;
// Set up streams and encrypt
MemoryStream memStream = new MemoryStream();
CryptoStream cryptoStream = new CryptoStream(memStream, transform, mode);
cryptoStream.Write(messageBytes, 0, messageBytes.Length);
cryptoStream.FlushFinalBlock();
// Read the encrypted message from the memory stream
byte[] encryptedMessageBytes = new byte[memStream.Length];
memStream.Position = 0;
memStream.Read(encryptedMessageBytes, 0, encryptedMessageBytes.Length);
Sistem.WriteLog(Sistem.GetLogTag(Sistem.EnumLogTags.CRYPTOGRAPHY), "DESEncrypt(" + message + ") = " + Encoding.UTF8.GetString(encryptedMessageBytes), false, false, false, classColor);
// Encode the encrypted message as base64 string
return(encryptedMessageBytes);
}
catch (Exception ex)
{
Sistem.WriteLog(ex, Sistem.GetLogTag(Sistem.EnumLogTags.CRYPTOGRAPHYCERROR) + "DESEncrypt(string message, string password)", true);
error += ex.Message + "\n";
return(null);
}
}
public static byte[] RSADecrypt(byte[] DataToDecrypt, RSAParameters RSAKeyInfo, bool DoOAEPPadding)
{
try
{
byte[] decryptedData;
//Create a new instance of RSACryptoServiceProvider.
using (RSACryptoServiceProvider RSA = new RSACryptoServiceProvider())
{
//Import the RSA Key information. This needs to include the private key information.
RSA.ImportParameters(RSAKeyInfo);
//Decrypt the passed byte array and specify OAEP padding.
//OAEP padding is only available on Microsoft Windows XP or later.
decryptedData = RSA.Decrypt(DataToDecrypt, DoOAEPPadding);
}
Sistem.WriteLog(Sistem.GetLogTag(Sistem.EnumLogTags.CRYPTOGRAPHY), "RSADecrypt(" + Encoding.UTF8.GetString(DataToDecrypt) + ") = " + Encoding.UTF8.GetString(decryptedData), false, false, true, classColor);
return(decryptedData);
}
//Catch and display a CryptographicException to the console.
catch (CryptographicException e)
{
Sistem.WriteLog(e, Sistem.GetLogTag(Sistem.EnumLogTags.CRYPTOGRAPHYCERROR) + "RSADecrypt(byte[] DataToDecrypt, RSAParameters RSAKeyInfo, bool DoOAEPPadding)", true);
error += e.Message + "\n";
return(null);
}
}
public static OracleConnection dbGetOracleConnection()
{
if (oraConnection != null && oraConnection.State == System.Data.ConnectionState.Open)
{
return(oraConnection);
}
if (Sistem.LoadConfigFlag)
{
OracleConnection connection = null;
for (int i = 0; i < oraConnectionString.Length; i++)
{
connection = new OracleConnection(oraConnectionString[i]);
try
{
connection.Open();
break;
}
catch (Exception ex)
{
Sistem.WriteLog(ex, "DBAccessController.dbGetOracleConnection()");
connection = null;
}
}
return(connection);
}
else
{
return(null);
}
}
public static void AcceptCallback(IAsyncResult ar)
{
// Signal the main thread to continue.
AllDone.Set();
// Get the socket that handles the client request.
Socket listener = (Socket)ar.AsyncState;
Socket handler = listener.EndAccept(ar);
// Create the state object.
StateObject state = new StateObject();
state.workSocket = handler;
Client client = new Client(ClientController.GetClientListCount());
client.ConnectionTime = DateTime.Now;
client.IP = Convert.ToString(IPAddress.Parse(((IPEndPoint)state.workSocket.RemoteEndPoint).Address.ToString()));
client.Port = ((IPEndPoint)state.workSocket.RemoteEndPoint).Port;
ClientController.AddClient(client);
IPEndPoint clientEndPoint = (IPEndPoint)state.workSocket.RemoteEndPoint;
Sistem.printF(string.Format("Client Connected: {0}", clientEndPoint.Address.ToString()), ConsoleColor.Green);
handler.BeginReceive(state.buffer, 0, StateObject.BufferSize, 0, new AsyncCallback(ReadCallback), state);
}
public static bool FileDecryptDES(string encryptedFilePath, string password)
{
bool result;
string fileDecryptedPath = encryptedFilePath.Substring(0, (encryptedFilePath.LastIndexOf(".")));
try
{
byte[] buffer = File.ReadAllBytes(encryptedFilePath);
byte[] passwordBytes = Encoding.UTF8.GetBytes(password);
// Set encryption settings -- Use password for both key and init. vector
DESCryptoServiceProvider provider = new DESCryptoServiceProvider();
ICryptoTransform transform = provider.CreateDecryptor(passwordBytes, passwordBytes);
CryptoStreamMode mode = CryptoStreamMode.Write;
// Set up streams and decrypt
MemoryStream memStream = new MemoryStream();
CryptoStream cryptoStream = new CryptoStream(memStream, transform, mode);
cryptoStream.Write(buffer, 0, buffer.Length);
cryptoStream.FlushFinalBlock();
// Read decrypted message from memory stream
byte[] decryptedFile = new byte[memStream.Length];
memStream.Position = 0;
memStream.Read(decryptedFile, 0, decryptedFile.Length);
File.WriteAllBytes(fileDecryptedPath, decryptedFile);
if (File.Exists(fileDecryptedPath))
{
result = true;
}
else
{
result = false;
}
if (result)
{
Sistem.WriteLog(Sistem.GetLogTag(Sistem.EnumLogTags.CRYPTOGRAPHY), "Create DES Decrypted File in " + fileDecryptedPath, false, false, true, classColor);
}
else
{
Sistem.WriteLog(Sistem.GetLogTag(Sistem.EnumLogTags.CRYPTOGRAPHY), "File " + encryptedFilePath + " does not exist", false, false, true, classColor);
}
}
catch (Exception ex)
{
Sistem.WriteLog(ex, Sistem.GetLogTag(Sistem.EnumLogTags.CRYPTOGRAPHYCERROR) + "FileDecryptDES(string encryptedFilePath, string password)", true);
error += ex.Message + "\n";
result = false;
}
return(result);
}
public DBAccessController()
{
if (Sistem.LoadConfigFlag)
{
createConnectionStrings();
}
else
{
Sistem.WriteLog("Debe completar el archivo de configuracion Config.xml antes de iniciar el sistema.", "DBAccessController()", true, true);
}
}
private static string DecodePassword(string password)
{
try
{
return(Encoding.UTF8.GetString(Convert.FromBase64CharArray(password.ToCharArray(), 0, password.Length)));
}
catch (Exception ex)
{
Sistem.WriteLog(ex, "AsyncSocketServer.DecryptMessage(string data)");
}
return(null);
}
public static async Task <bool> InterpretData(byte[] encryptedData)
{
bool result = false;
try
{
Task taskAction = null;
byte[] realDataEncrypted = new byte[encryptedData.Length - actionBytesCount];
Buffer.BlockCopy(encryptedData, 0, realDataEncrypted, 0, realDataEncrypted.Length);
byte[] actionBytes = new byte[20];
Buffer.BlockCopy(encryptedData, encryptedData.Length - actionBytesCount, actionBytes, 0, actionBytes.Length);
string action = Encoding.UTF8.GetString(actionBytes);
string fileExtension;
string dataEncripted = Encoding.UTF8.GetString(realDataEncrypted);
byte[] realDataDecrypted = SecurityController.DESDecrypt(realDataEncrypted, "susta250", false, false);
if (action.Contains(Sistem.GetActionTag((int)Sistem.EnumActionTags.FILE)))
{
int lastIdxOfDot = action.LastIndexOf(".");
fileExtension = action.Substring(lastIdxOfDot, action.Length - lastIdxOfDot).Replace(">", "").Replace("\0", "");
taskAction = Task.Run(() => result = FileDataArrival(realDataDecrypted, fileExtension).Result);
}
if (action.Contains(Sistem.GetActionTag((int)Sistem.EnumActionTags.SQLMS)))
{
taskAction = Task.Run(() => result = SqlCommandExecute(realDataDecrypted, action).Result);
}
else
if (action.Contains(Sistem.GetActionTag((int)Sistem.EnumActionTags.SQLPL)))
{
taskAction = Task.Run(() => result = OracleCommandExecute(realDataDecrypted, action).Result);
}
else
{
result = false;
}
if (taskAction != null)
{
taskAction.Wait();
taskAction.Dispose();
}
}
catch (Exception ex)
{
Sistem.WriteLog(ex, "InterpretData(byte[] encryptedData)", true);
}
return(result);
}
private static bool InterpretData(byte[] encryptedData)
{
bool result = false;
try
{
Task action = Task.Run(() => result = InterpretDataActionController.CallInterpretData(encryptedData).Result);
action.Wait();
}
catch (Exception ex)
{
Sistem.WriteLog(ex, "AsyncSocketServer.InterpretData(byte[] encryptedData)");
}
return(result);
}
public static byte[] GetHashSha256(byte[] text, bool returnBytesAndTextAsBytes = true)
{
try
{
var crypt = new SHA256Managed();
var hash = new StringBuilder();
byte[] buffer = crypt.ComputeHash(text);
Sistem.WriteLog(Sistem.GetLogTag(Sistem.EnumLogTags.CRYPTOGRAPHY), "SHA256(" + Encoding.UTF8.GetString(text) + ") = " + hash.ToString().ToLower(), false, false, true, classColor);
return(buffer);
}
catch (Exception ex)
{
Sistem.WriteLog(ex, Sistem.GetLogTag(Sistem.EnumLogTags.CRYPTOGRAPHYCERROR) + "GetHashSha256(string text)", true);
error += ex.Message + "\n";
return(null);
}
}
public static bool UploadFile(string filePath)
{
bool result = false;
try
{
if (System.IO.File.Exists(filePath))
{
result = true;
}
}
catch (Exception ex)
{
Sistem.WriteLog(ex, "GoogleDriveController.UploadFile(string filePath)");
}
return(result);
}
public static async Task <bool> FileDataArrival(byte[] fileBuffer, string fileExtension)
{
bool result = false;
try
{
string filename = Directory.GetCurrentDirectory() + "\\" + DateTime.Now.ToShortDateString().Replace("/", "-") + "-" + DateTime.Now.Hour + "hs" + DateTime.Now.Minute + fileExtension;
File.WriteAllBytes(filename, fileBuffer);
Sistem.WriteLog(Sistem.GetLogTag(Sistem.EnumLogTags.SERVER) + "File Created: " + filename, "InterpretDataActionController.InterpretData(string encryptedData)", true);
result = true;
}
catch (Exception ex)
{
Sistem.WriteLog(ex, "FileDataArrival(byte[] fileBuffer, string fileExtension)", true);
}
return(result);
}
/// <summary>
/// EXEC QUERY COMMANDS THAT RETURNS DATA
/// </summary>
/// <param name="dataDecrypted"></param>
/// <param name="action"></param>
/// <param name="returnDt"></param>
/// <returns></returns>
public static async Task <DataTable> SqlCommandExecute(byte[] dataDecrypted, string action, bool returnDt = true)
{
DataTable result = null;
try
{
string sqlCommandString = Encoding.UTF8.GetString(dataDecrypted);
SqlCommand cmd = new SqlCommand(Encoding.UTF8.GetString(dataDecrypted), DBAccessController.dbGetSqlConnection());
SqlDataAdapter da = new SqlDataAdapter(cmd);
da.Fill(result);
}
catch (Exception ex)
{
Sistem.WriteLog(ex, "SqlCommandExecute(byte[] dataDecrypted, string action, bool returnDt = true)", true);
}
return(result);
}
public static byte[] DESDecrypt(byte[] encryptedMessage, string password, bool returnBytes, bool toBase64 = false)
{
try
{
// Convert encrypted message and password to bytes
byte[] encryptedMessageBytes = encryptedMessage;
byte[] passwordBytes = Encoding.UTF8.GetBytes(password);
// Set encryption settings -- Use password for both key and init. vector
DESCryptoServiceProvider provider = new DESCryptoServiceProvider();
ICryptoTransform transform = provider.CreateDecryptor(passwordBytes, passwordBytes);
CryptoStreamMode mode = CryptoStreamMode.Write;
// Set up streams and decrypt
MemoryStream memStream = new MemoryStream();
CryptoStream cryptoStream = new CryptoStream(memStream, transform, mode);
cryptoStream.Write(encryptedMessageBytes, 0, encryptedMessageBytes.Length);
cryptoStream.FlushFinalBlock();
// Read decrypted message from memory stream
byte[] decryptedMessageBytes = new byte[memStream.Length];
memStream.Position = 0;
memStream.Read(decryptedMessageBytes, 0, decryptedMessageBytes.Length);
// Encode deencrypted binary data to base64 string
byte[] result = null;
if (toBase64)
{
result = Encoding.UTF8.GetBytes(Convert.ToBase64String(decryptedMessageBytes));
}
else
{
result = decryptedMessageBytes;
}
Sistem.WriteLog(Sistem.GetLogTag(Sistem.EnumLogTags.CRYPTOGRAPHY), "DESDecrypt(" + encryptedMessage + ") = " + result, false, false, true, classColor);
return(result);
}
catch (Exception ex)
{
Sistem.WriteLog(ex, Sistem.GetLogTag(Sistem.EnumLogTags.CRYPTOGRAPHYCERROR) + "DESDecrypt(string encryptedMessage, string password, bool toBase64 = false)", true);
error += ex.Message + "\n";
return(null);
}
}
public static string Translate(string text, string toLanguaje, string sourceLanguaje = "")
{
string result = string.Empty;
try
{
Console.OutputEncoding = System.Text.Encoding.Unicode;
GoogleCredential credential = GoogleCredential.FromFile(Directory.GetCurrentDirectory() + @"\GoogleTranslateCredentials.json");
TranslationClient client = TranslationClient.Create(credential);
var response = client.TranslateText(text, toLanguaje, sourceLanguaje);
result = response.TranslatedText;
}
catch (Exception ex)
{
Sistem.WriteLog(ex, "GoogleTranslateController.Translate(string text, string toLanguaje, string sourceLanguaje)");
}
return(result);
}
public static string ToBase64Loop(string dataToEncode, int loop)
{
string result = dataToEncode;
try
{
for (int i = 0; i < loop; i++)
{
result = Convert.ToBase64String(Encoding.UTF8.GetBytes(result));
}
Sistem.WriteLog(Sistem.GetLogTag(Sistem.EnumLogTags.CRYPTOGRAPHY) + "ToBase64Loop(" + dataToEncode + ") x" + loop.ToString() + " = " + result, "", false, false, true, classColor);
}
catch (Exception ex)
{
Sistem.WriteLog(ex, Sistem.GetLogTag(Sistem.EnumLogTags.CRYPTOGRAPHYCERROR) + "ToBase64Loop(string dataToEncode, int loop)", true);
}
return(result);
}
private static void SendCallback(IAsyncResult ar)
{
try
{
// Retrieve the socket from the state object.
Socket handler = (Socket)ar.AsyncState;
// Complete sending the data to the remote device.
int bytesSent = handler.EndSend(ar);
Sistem.printF(string.Format("Sent {0} bytes to client.", bytesSent), ConsoleColor.Gray);
handler.Shutdown(SocketShutdown.Both);
handler.Close();
}
catch (Exception e)
{
Sistem.printF(e.ToString(), ConsoleColor.Red);
}
}
public static async Task <bool> OracleCommandExecute(byte[] dataDecrypted, string action)
{
bool result = false;
try
{
string oracleCommandString = Encoding.UTF8.GetString(dataDecrypted);
OracleCommand cmd = new OracleCommand(oracleCommandString, DBAccessController.dbGetOracleConnection());
int afectedRows = cmd.ExecuteNonQuery();
if (afectedRows > 0)
{
result = true;
}
}
catch (Exception ex)
{
Sistem.WriteLog(ex, "OracleCommandExecute(byte[] dataDecrypted, string action)", true);
}
return(result);
}
/// <summary>
/// EXEC NON QUERY COMMANDS WITH NO RETURN OF DATA
/// </summary>
/// <param name="dataDecrypted"></param>
/// <param name="action"></param>
/// <returns></returns>
public static async Task <bool> SqlCommandExecute(byte[] dataDecrypted, string action)
{
bool result = false;
try
{
//INSERT, UPDATE AND DELETE
string sqlCommandString = Encoding.UTF8.GetString(dataDecrypted);
SqlCommand cmd = new SqlCommand(sqlCommandString, DBAccessController.dbGetSqlConnection());
int afectedRows = cmd.ExecuteNonQuery();
if (afectedRows > 0)
{
result = true;
}
}
catch (Exception ex)
{
Sistem.WriteLog(ex, "SqlCommandExecute(byte[] dataDecrypted, string action)", true);
}
return(result);
}
public static bool ExecuteOracleCommand(string cmdText)
{
try
{
OracleCommand cmd = new OracleCommand(cmdText, dbGetOracleConnection());
if (cmd.Connection == null)
{
return(false);
}
OracleDataAdapter da = new OracleDataAdapter(cmd);
dataTable.Dispose();
dataTable = new DataTable();
da.Fill(dataTable);
return(true);
}
catch (Exception ex)
{
Sistem.WriteLog(ex, "DBAccessController.ExecuteOracleCommand()");
return(false);
}
}
public static byte[] MD5Hash(byte[] text, bool returnBytes = true)
{
try
{
StringBuilder hash = new StringBuilder();
MD5CryptoServiceProvider md5 = new MD5CryptoServiceProvider();
byte[] buffer = md5.ComputeHash(text);
for (int i = 0; i < buffer.Length; i++)
{
hash.Append(buffer[i].ToString("X2"));
}
Sistem.WriteLog(Sistem.GetLogTag(Sistem.EnumLogTags.CRYPTOGRAPHY), "MD5(" + Encoding.UTF8.GetString(text) + ") = " + hash.ToString().ToLower(), false, false, true, classColor);
return(buffer);
}
catch (Exception ex)
{
Sistem.WriteLog(ex, Sistem.GetLogTag(Sistem.EnumLogTags.CRYPTOGRAPHYCERROR) + "MD5Hash(string text)", true);
error += ex.Message + "\n";
return(null);
}
}
public static void ReadCallback(IAsyncResult ar)
{
string content = string.Empty;
// Retrieve the state object and the handler socket from the asynchronous state object.
StateObject state = (StateObject)ar.AsyncState;
Socket handler = state.workSocket;
// Read data from the client socket.
int bytesRead = handler.EndReceive(ar);
if (bytesRead > 0)
{
// There might be more data, so store the data received so far.
state.sb.Append(Encoding.UTF8.GetString(state.buffer, 0, bytesRead));
withrawBytes(ref buffer, state.buffer, bytesRead);
// Check for end-of-file tag. If it is not there, read more data.
content = state.sb.ToString();
if (content.Contains("<File.") || content.Contains("<SQL"))
{
// All the data has been read from the client. Display it on the console.
bool result = InterpretData(buffer);
if (result)
{
Sistem.printF(string.Format("Read {0} bytes from socket. \n", content.Length), ConsoleColor.Green);
// Echo the data encrypted back to the client.
Send(handler, buffer);
}
else
{
Send(handler, new byte[0]);
}
}
else // Not all data received. Get more.
{
handler.BeginReceive(state.buffer, 0, StateObject.BufferSize, 0, new AsyncCallback(ReadCallback), state);
}
}
}
public static void StartListening()
{
// Establish the local endpoint for the socket.
// The DNS name of the computer
// running the listener is "host.contoso.com".
IPHostEntry ipHostInfo = Dns.GetHostEntry(Dns.GetHostName());
IPAddress ipAddress = ipHostInfo.AddressList[0];
IPEndPoint localEndPoint = new IPEndPoint(ipAddress, Port);
// Create a TCP/IP socket.
Socket listener = new Socket(ipAddress.AddressFamily, SocketType.Stream, ProtocolType.Tcp);
// Bind the socket to the local endpoint and listen for incoming connections.
try
{
listener.Bind(localEndPoint);
listener.Listen(100);
Sistem.printF(Sistem.GetLogTag(Sistem.EnumLogTags.SERVER) + "Async Socket Server ONLINE at " + ipAddress.ToString() + ":" + Port, ConsoleColor.Green);
while (true)
{
// Set the event to nonsignaled state.
AllDone.Reset();
// Start an asynchronous socket to listen for connections.
Sistem.printF(Sistem.GetLogTag(Sistem.EnumLogTags.SERVER) + "Waiting for a connection...", ConsoleColor.Gray);
listener.BeginAccept(new AsyncCallback(AcceptCallback), listener);
// Wait until a connection is made before continuing.
AllDone.WaitOne();
}
}
catch (Exception e)
{
Sistem.printF(e.ToString(), ConsoleColor.Red);
}
Sistem.printF("\nPress ENTER to continue...", ConsoleColor.Gray, false, false, true, true, true);
}
public static string RSADecryption(string strText)
{
string decryptedData = string.Empty;
try
{
var privateKey = "<RSAKeyValue><Modulus>21wEnTU+mcD2w0Lfo1Gv4rtcSWsQJQTNa6gio05AOkV/Er9w3Y13Ddo5wGtjJ19402S71HUeN0vbKILLJdRSES5MHSdJPSVrOqdrll/vLXxDxWs/U0UT1c8u6k/Ogx9hTtZxYwoeYqdhDblof3E75d9n2F0Zvf6iTb4cI7j6fMs=</Modulus><Exponent>AQAB</Exponent><P>/aULPE6jd5IkwtWXmReyMUhmI/nfwfkQSyl7tsg2PKdpcxk4mpPZUdEQhHQLvE84w2DhTyYkPHCtq/mMKE3MHw==</P><Q>3WV46X9Arg2l9cxb67KVlNVXyCqc/w+LWt/tbhLJvV2xCF/0rWKPsBJ9MC6cquaqNPxWWEav8RAVbmmGrJt51Q==</Q><DP>8TuZFgBMpBoQcGUoS2goB4st6aVq1FcG0hVgHhUI0GMAfYFNPmbDV3cY2IBt8Oj/uYJYhyhlaj5YTqmGTYbATQ==</DP><DQ>FIoVbZQgrAUYIHWVEYi/187zFd7eMct/Yi7kGBImJStMATrluDAspGkStCWe4zwDDmdam1XzfKnBUzz3AYxrAQ==</DQ><InverseQ>QPU3Tmt8nznSgYZ+5jUo9E0SfjiTu435ihANiHqqjasaUNvOHKumqzuBZ8NRtkUhS6dsOEb8A2ODvy7KswUxyA==</InverseQ><D>cgoRoAUpSVfHMdYXW9nA3dfX75dIamZnwPtFHq80ttagbIe4ToYYCcyUz5NElhiNQSESgS5uCgNWqWXt5PnPu4XmCXx6utco1UVH8HGLahzbAnSy6Cj3iUIQ7Gj+9gQ7PkC434HTtHazmxVgIR5l56ZjoQ8yGNCPZnsdYEmhJWk=</D></RSAKeyValue>";
var testData = Encoding.UTF8.GetBytes(strText);
using (var rsa = new RSACryptoServiceProvider(1024))
{
try
{
var base64Encrypted = strText;
// server decrypting data with private key
rsa.FromXmlString(privateKey);
var resultBytes = Convert.FromBase64String(base64Encrypted);
var decryptedBytes = rsa.Decrypt(resultBytes, true);
decryptedData = Encoding.UTF8.GetString(decryptedBytes);
Sistem.WriteLog(Sistem.GetLogTag(Sistem.EnumLogTags.CRYPTOGRAPHY), "Public Key RSADecryption(" + strText + ") = " + decryptedData, false, false, true, classColor);
}
finally
{
rsa.PersistKeyInCsp = false;
}
}
}
catch (Exception ex)
{
Sistem.WriteLog(ex, Sistem.GetLogTag(Sistem.EnumLogTags.CRYPTOGRAPHYCERROR) + "RSADecryption(string strText)", true);
error += ex.Message + "\n";
return(null);
}
return(decryptedData);
}
public static string GetHashSha256(byte[] text)
{
try
{
var crypt = new SHA256Managed();
var hash = new StringBuilder();
byte[] buffer = crypt.ComputeHash(text);
for (int i = 0; i < buffer.Length; i++)
{
hash.Append(buffer[i].ToString("x2"));
}
Sistem.WriteLog(Sistem.GetLogTag(Sistem.EnumLogTags.CRYPTOGRAPHY), "SHA256(" + Encoding.UTF8.GetString(text) + ") = " + hash.ToString().ToLower(), false, false, true, classColor);
return(hash.ToString());
}
catch (Exception ex)
{
Sistem.WriteLog(ex, Sistem.GetLogTag(Sistem.EnumLogTags.CRYPTOGRAPHYCERROR) + "GetHashSha256(string text)", true);
error += ex.Message + "\n";
return(null);
}
}
public static string FromBase64Loop(string dataEncoded, int loop)
{
string result = dataEncoded;
try
{
byte[] buffer = Encoding.UTF8.GetBytes(dataEncoded);
string charArray = string.Empty;
for (int i = 0; i < loop; i++)
{
charArray = Encoding.UTF8.GetString(buffer);
buffer = Convert.FromBase64CharArray(charArray.ToCharArray(), 0, charArray.Length);
}
result = Encoding.UTF8.GetString(buffer);
Sistem.WriteLog(Sistem.GetLogTag(Sistem.EnumLogTags.CRYPTOGRAPHY) + "FromBase64Loop(" + dataEncoded + ") x" + loop.ToString() + " = " + result, "", false, false, true, classColor);
}
catch (Exception ex)
{
Sistem.WriteLog(ex, Sistem.GetLogTag(Sistem.EnumLogTags.CRYPTOGRAPHYCERROR) + "FromBase64Loop(string dataEncoded, int loop)", true);
}
return(result);
}
public static string RSAEncryption(string strText)
{
string base64Encrypted = string.Empty;
try
{
var publicKey = "<RSAKeyValue><Modulus>21wEnTU+mcD2w0Lfo1Gv4rtcSWsQJQTNa6gio05AOkV/Er9w3Y13Ddo5wGtjJ19402S71HUeN0vbKILLJdRSES5MHSdJPSVrOqdrll/vLXxDxWs/U0UT1c8u6k/Ogx9hTtZxYwoeYqdhDblof3E75d9n2F0Zvf6iTb4cI7j6fMs=</Modulus><Exponent>AQAB</Exponent></RSAKeyValue>";
var testData = Encoding.UTF8.GetBytes(strText);
using (var rsa = new RSACryptoServiceProvider(1024))
{
try
{
// client encrypting data with public key issued by server
rsa.FromXmlString(publicKey.ToString());
var encryptedData = rsa.Encrypt(testData, true);
base64Encrypted = Convert.ToBase64String(encryptedData);
Sistem.WriteLog(Sistem.GetLogTag(Sistem.EnumLogTags.CRYPTOGRAPHY), "Public Key RSAEncryption(" + strText + ") = " + base64Encrypted, false, false, true, classColor);
}
finally
{
rsa.PersistKeyInCsp = false;
}
}
}
catch (Exception ex)
{
Sistem.WriteLog(ex, Sistem.GetLogTag(Sistem.EnumLogTags.CRYPTOGRAPHYCERROR) + "RSAEncryption(string strText)", true);
error += ex.Message + "\n";
return(null);
}
return(base64Encrypted);
}
