Can be used to add / decrypt database users, passwords, etc.
Using system; using system.text; using system.security.cryptography;
Namespace Common {? ///
Summary description of /// securityservice. ? ///
Public Class SecurityService
? {
?? static protected byte [] Bytekey? = {125, 14, 45, 67, 112, 79, 77, 99, 37, 104, 13, 9, 118, 51, 87, 108};
?? static protected byte [] Byteiv? = {86, 19, 79, 15, 72, 58, 117, 45};
?? static public string symmetricencrypt (string splaintext)
?? {
??? byte [] byteplaintext;
??? MemoryStream EncryptedStream;
??? Icryptotransform Encryptor;
????? Cryptostream thecryptostream;
????? if (splaintext == "")? Return ""
??? byteplaintext = Encoding.ascii.getbytes (splaintext);
??? EncryptedStream = new memoryStream (splaint.length);
??? encryptor = getencryptor ();
??? Thecryptostream = New CryptostReam (EncryptedStream, Encryptor, Cryptostreammode.write);
??? Thecryptostream.write (byteplaintext, 0, byteplaintext.length);
???????.Flushptostream.flushfinalblock ();
??? thecryptostream.close ();
??? Return Convert.TOBASE64STRING (EncryptedStream.toArray ());
??} // end function
?? static public string SymmetricDecrypt (String sEncryptedText) ?? {??? Byte [] byteEncrypted; ??? MemoryStream PlaintextStream; ??? ICryptoTransform Decryptor; ??? CryptoStream TheCryptoStream;
??? if (sencryptedtext == "") "rRN" ";
??? byteEncrypted = Convert.FromBase64String (sEncryptedText.Trim ()); ??? PlaintextStream = new MemoryStream (sEncryptedText.Length); ??? Decryptor = GetDecryptor (); ??? TheCryptoStream = new CryptoStream (PlaintextStream, Decryptor, CryptostReammode.write;
??? TheCryptoStream.Write (byteEncrypted, 0, byteEncrypted.Length); ??? TheCryptoStream.FlushFinalBlock (); ??? TheCryptoStream.Close (); ??? return Encoding.ASCII.GetString (PlaintextStream.ToArray ()) ;
??} // end function
?? static private ICryptoTransform GetEncryptor () ?? {???? RC2CryptoServiceProvider CryptoProvider = new RC2CryptoServiceProvider (); ????????????? CryptoProvider.Mode = CipherMode.CBC; ???? return CryptoProvider .Createncryptor (bytekey, byteiv);
??} // end function
? ?? static private ICryptoTransform GetDecryptor () ?? {??? RC2CryptoServiceProvider CryptoProvider = new RC2CryptoServiceProvider (); ??? CryptoProvider.Mode = CipherMode.CBC; ???????????? return CryptoProvider.CreateDecryptor (Bytekey, Byteiv);
??} // end function?}}
