public static string Decrypt(string strEncrypted)
{
string retValue = string.Empty;
try
{
TripleDESCryptoServiceProvider objDESCrypto = new TripleDESCryptoServiceProvider();
MD5CryptoServiceProvider objHashMD5 = new MD5CryptoServiceProvider();
byte[] byteHash, byteBuff;
string strTempKey = ConvertTool.strtoHex("DReportPassword");
byteHash = objHashMD5.ComputeHash(UTF8Encoding.UTF8.GetBytes(strTempKey));
objHashMD5 = null;
objDESCrypto.Key = byteHash;
objDESCrypto.Mode = CipherMode.ECB; //CBC, CFB
byte[] _key0 = Encoding.Unicode.GetBytes(strEncrypted.Substring(0, 8));
byte[] _key1 = Encoding.Unicode.GetBytes("20100723");
string ffdd = ConvertTool.Hextostr(strEncrypted.Substring(8));
byteBuff = Convert.FromBase64String(ffdd);
string strDecrypted = UTF8Encoding.UTF8.GetString(objDESCrypto.CreateDecryptor(_key0, _key1).TransformFinalBlock(byteBuff, 0, byteBuff.Length));
objDESCrypto = null;
retValue = strDecrypted;
}
catch (Exception ex)
{
retValue = "error: " + ex.Message;
}
return(retValue);
}
public static string Encrypt(string strToEncrypt)
{
string retValue = string.Empty;
try
{
TripleDESCryptoServiceProvider objDESCrypto = new TripleDESCryptoServiceProvider();
MD5CryptoServiceProvider objHashMD5 = new MD5CryptoServiceProvider();
byte[] byteHash, byteBuff;
string strTempKey = ConvertTool.strtoHex("DReportPassword");
byteHash = objHashMD5.ComputeHash(UTF8Encoding.UTF8.GetBytes(strTempKey));
objHashMD5 = null;
objDESCrypto.Key = byteHash;
objDESCrypto.Mode = CipherMode.ECB; //CBC, CFB
string _key = ConvertTool.GetUniqueKey(8);
byte[] _key0 = Encoding.Unicode.GetBytes(_key);
byte[] _key1 = Encoding.Unicode.GetBytes("20100723");
byteBuff = UTF8Encoding.UTF8.GetBytes(strToEncrypt);
string base64str = Convert.ToBase64String(objDESCrypto.CreateEncryptor(_key0, _key1).TransformFinalBlock(byteBuff, 0, byteBuff.Length));
retValue = _key + ConvertTool.strtoHex(base64str);
}
catch (Exception ex)
{
retValue = "error: " + ex.Message;
}
return(retValue);
}
