Are you looking for a way to Encrypt a string ? want to keep encrypt string length should be the same as the input string ? then read this thread to know more about it
public string encryptPassword(string strText)
{
return Encrypt(strText, "&%#@?,:*");
}
public string decryptPassword(string str)
{
return Decrypt(str, "&%#@?,:*");
}
private string Encrypt(string strText, string strEncrypt)
{
byte[] byKey = new byte[20];
byte[] dv ={ 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF };
try
{
byKey = System.Text.Encoding.UTF8.GetBytes(strEncrypt.Substring(0, 8));
DESCryptoServiceProvider des = new DESCryptoServiceProvider();
byte[] inputArray = System.Text.Encoding.UTF8.GetBytes(strText);
MemoryStream ms = new MemoryStream();
CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(byKey, dv), CryptoStreamMode.Write);
cs.Write(inputArray, 0, inputArray.Length);
cs.FlushFinalBlock();
return Convert.ToBase64String(ms.ToArray());
}
catch (Exception ex)
{
throw ex;
}
public string decryptPassword(string str)
{
return Decrypt(str, "&%#@?,:*");
}
private string Decrypt(string strText, string strEncrypt)
{
byte[] bKey = new byte[20];
byte[] IV = { 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF };
try
{
bKey = System.Text.Encoding.UTF8.GetBytes(strEncrypt.Substring(0, 8));
DESCryptoServiceProvider des = new DESCryptoServiceProvider();
Byte[] inputByteArray = inputByteArray = Convert.FromBase64String(strText);
MemoryStream ms = new MemoryStream();
CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(bKey, IV), CryptoStreamMode.Write);
cs.Write(inputByteArray, 0, inputByteArray.Length);
cs.FlushFinalBlock();
System.Text.Encoding encoding = System.Text.Encoding.UTF8;
return encoding.GetString(ms.ToArray());
}
catch (Exception ex)
{
throw ex;
}
}
public static string EncryptMyString(string MyString, string MySecurity)
{
byte[] inputArray = UTF8Encoding.UTF8.GetBytes(MyString);
TripleDESCryptoServiceProvider tdspMyPro = new TripleDESCryptoServiceProvider();
tdspMyPro.Key = UTF8Encoding.UTF8.GetBytes(MySecurity);
tdspMyPro.Mode = CipherMode.ECB;
tdspMyPro.Padding = PaddingMode.PKCS7;
ICryptoTransform ictMyPro = tdspMyPro.CreateEncryptor();
byte[] resultArray = ictMyPro.TransformFinalBlock(inputArray, 0, inputArray.Length);
tdspMyPro.Clear();
return Convert.ToBase64String(resultArray, 0, resultArray.Length);
}
public static string DecryptMyString(string MyString, string MySecurity)
{
byte[] inputArray = Convert.FromBase64String(MyString);
TripleDESCryptoServiceProvider tdspMyPro = new TripleDESCryptoServiceProvider();
tdspMyPro.Key = UTF8Encoding.UTF8.GetBytes(MySecurity);
tdspMyPro.Mode = CipherMode.ECB;
tdspMyPro.Padding = PaddingMode.PKCS7;
ICryptoTransform ictMyPro = tdspMyPro.CreateDecryptor();
byte[] resultArray = ictMyPro.TransformFinalBlock(inputArray, 0, inputArray.Length);
tdspMyPro.Clear();
return UTF8Encoding.UTF8.GetString(resultArray);
}
public static string Encrypt_text(string input, string key)
{
byte[] inputArray = UTF8Encoding.UTF8.GetBytes(input);
TripleDESCryptoServiceProvider objtripleDESProvider = new TripleDESCryptoServiceProvider();
//objtripleDESProvider.GenerateKey();
//we can provide a key or we can generate a key by using GenerateKey() method of TripleDES provider class
tripleDES.Key = UTF8Encoding.UTF8.GetBytes(key);
//MessageBox.Show(Convert.ToBase64String(objtripleDESProvider.Key,0,objtripleDESProvider.Key.Length));
objtripleDESProvider.Mode = CipherMode.ECB;
objtripleDESProvider.Padding = PaddingMode.PKCS7;
ICryptoTransform cTransform = objtripleDESProvider.CreateEncryptor();
byte[] resultArray = cTransform.TransformFinalBlock(inputArray, 0, inputArray.Length);
objtripleDESProvider.Clear();
return Convert.ToBase64String(resultArray, 0, resultArray.Length);
}