Need help on password-encrypted key used for signing. : The Official Microsoft ASP.NET Forums

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bhadelia.imr...

Contributor

3191 Points

533 Posts

Need help on password-encrypted key used for signing.

Sep 01, 2008 05:00 AM|LINK

Hello Friends,

I have one project [out-sourced] which ask me for "The project includes a password-encrypted key used for signing".

Its window application having 5-6 sub project and its in Orcas., while loading the project its show me the dialouge to enter passoword, if I escape then while building application it ask for same and build gets failed, with error Error 1 Importing key file "abc.bbc.Data.pfx" was canceled. [as I press escape on dialouge box]

Any comment any suggession any solutions?

Imran
[MCTS]
Born to fly High
http://knowledgebaseworld.blogspot.com/

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saminathan.m...

Member

342 Points

61 Posts

Re: Need help on password-encrypted key used for signing.

Sep 01, 2008 10:31 AM|LINK

string l_TempPassword = CryptorEngine.Encrypt(

txtPassword.Text, true);

public class CryptorEngine
    {
        /// <summary>
        /// Encrypt a string using dual encryption method. Return a encrypted cipher Text
        /// </summary>
        /// <param name="toEncrypt">string to be encrypted</param>
        /// <param name="useHashing">use hashing? send to for extra secirity</param>
        /// <returns></returns>
        public static string Encrypt(string toEncrypt, bool useHashing)
        {
            byte[] keyArray;
            byte[] toEncryptArray = UTF8Encoding.UTF8.GetBytes(

toEncrypt);

           // System.Configuration.AppSettingsReader settingsReader = new AppSettingsReader();
            // Get the key from config file
         //   string key = (string)settingsReader.GetValue("rakhicrypto", typeof(String));
            string key = "rakhicrypto";
            //System.Windows.Forms.MessageBox.Show(key);
            if (useHashing)
            {
                MD5CryptoServiceProvider hashmd5 = new MD5CryptoServiceProvider();
                keyArray = hashmd5.ComputeHash(UTF8Encoding.UTF8.GetBytes(key));
                hashmd5.Clear();
            }
            else
                keyArray = UTF8Encoding.UTF8.GetBytes(key);

            TripleDESCryptoServiceProvider tdes = new TripleDESCryptoServiceProvider();
            tdes.Key = keyArray;
            tdes.Mode = CipherMode.ECB;
            tdes.Padding = PaddingMode.PKCS7;

            ICryptoTransform cTransform = tdes.CreateEncryptor();
            byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length);
            tdes.Clear();
            return Convert.ToBase64String(resultArray, 0, resultArray.Length);
        }
        /// <summary>
        /// DeCrypt a string using dual encryption method. Return a DeCrypted clear string
        /// </summary>
        /// <param name="cipherString">encrypted string</param>
        /// <param name="useHashing">Did you use hashing to encrypt this data? pass true is yes</param>
        /// <returns></returns>
        public static string Decrypt(string cipherString, bool useHashing)
        {
            byte[] keyArray;
            byte[] toEncryptArray = Convert.FromBase64String(cipherString);

           // System.Configuration.AppSettingsReader settingsReader = new AppSettingsReader();
            //Get your key from config file to open the lock!
            //string key = (string)settingsReader.GetValue("rakhicrypto", typeof(String));
            string key = "rakhicrypto";
            if (useHashing)
            {
                MD5CryptoServiceProvider hashmd5 = new MD5CryptoServiceProvider();
                keyArray = hashmd5.ComputeHash(UTF8Encoding.UTF8.GetBytes(key));
                hashmd5.Clear();
            }
            else
                keyArray = UTF8Encoding.UTF8.GetBytes(key);

            TripleDESCryptoServiceProvider tdes = new TripleDESCryptoServiceProvider();
            tdes.Key = keyArray;
            tdes.Mode = CipherMode.ECB;
            tdes.Padding = PaddingMode.PKCS7;

            ICryptoTransform cTransform = tdes.CreateDecryptor();
            byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length);

            tdes.Clear();
            return UTF8Encoding.UTF8.GetString(resultArray);
        }
    }