asp.net SqlMembershipProvider PasswordRecovery

using System;
using System.Configuration.Provider;
using System.Text;
using System.Web.Security;

public class PasswordRecoveryProvider : MembershipProvider
{
    private static readonly PasswordRecoveryProvider _instance = new PasswordRecoveryProvider();

    public override MembershipPasswordFormat PasswordFormat
    {
        get { return MembershipPasswordFormat.Encrypted; }
    }

    public static string RecoverMembershipEncryptedString(string target)
    {
        try
        {
            // Decode the password in Base64
            byte[] data = Convert.FromBase64String(target);

            // Use internal method to decrypt by machine key
            byte[] decrypted = _instance.DecryptPassword(data);

            // Encode the decrypted data to readable format
            string encoded = Encoding.Unicode.GetString(decrypted);

            // Remove the salt value prepended to the value
            string clean = encoded.Substring(8);

            // Return the password
            return clean;
        }
        catch (ProviderException)
        {
            // No machine key?
            return target;
        }
    }

    #region Not Implemented

    public override bool EnablePasswordRetrieval
    {
        get { throw new NotImplementedException(); }
    }

    public override bool EnablePasswordReset
    {
        get { throw new NotImplementedException(); }
    }

    public override bool RequiresQuestionAndAnswer
    {
        get { throw new NotImplementedException(); }
    }

    public override string ApplicationName
    {
        get { throw new NotImplementedException(); }
        set { throw new NotImplementedException(); }
    }

    public override int MaxInvalidPasswordAttempts
    {
        get { throw new NotImplementedException(); }
    }

    public override int PasswordAttemptWindow
    {
        get { throw new NotImplementedException(); }
    }

    public override bool RequiresUniqueEmail
    {
        get { throw new NotImplementedException(); }
    }

    public override int MinRequiredPasswordLength
    {
        get { throw new NotImplementedException(); }
    }

    public override int MinRequiredNonAlphanumericCharacters
    {
        get { throw new NotImplementedException(); }
    }

    public override string PasswordStrengthRegularExpression
    {
        get { throw new NotImplementedException(); }
    }

    public override MembershipUser CreateUser(string username, string password, string email, string passwordQuestion,
                                              string passwordAnswer, bool isApproved, object providerUserKey,
                                              out MembershipCreateStatus status)
    {
        throw new NotImplementedException();
    }

    public override bool ChangePasswordQuestionAndAnswer(string username, string password, string newPasswordQuestion,
                                                         string newPasswordAnswer)
    {
        throw new NotImplementedException();
    }

    public override string GetPassword(string username, string answer)
    {
        throw new NotImplementedException();
    }

    public override bool ChangePassword(string username, string oldPassword, string newPassword)
    {
        throw new NotImplementedException();
    }

    public override string ResetPassword(string username, string answer)
    {
        throw new NotImplementedException();
    }

    public override void UpdateUser(MembershipUser user)
    {
        throw new NotImplementedException();
    }

    public override bool ValidateUser(string username, string password)
    {
        throw new NotImplementedException();
    }

    public override bool UnlockUser(string userName)
    {
        throw new NotImplementedException();
    }

    public override MembershipUser GetUser(object providerUserKey, bool userIsOnline)
    {
        throw new NotImplementedException();
    }

    public override MembershipUser GetUser(string username, bool userIsOnline)
    {
        throw new NotImplementedException();
    }

    public override string GetUserNameByEmail(string email)
    {
        throw new NotImplementedException();
    }

    public override bool DeleteUser(string username, bool deleteAllRelatedData)
    {
        throw new NotImplementedException();
    }

    public override MembershipUserCollection GetAllUsers(int pageIndex, int pageSize, out int totalRecords)
    {
        throw new NotImplementedException();
    }

    public override int GetNumberOfUsersOnline()
    {
        throw new NotImplementedException();
    }

    public override MembershipUserCollection FindUsersByName(string usernameToMatch, int pageIndex, int pageSize,
                                                             out int totalRecords)
    {
        throw new NotImplementedException();
    }

    public override MembershipUserCollection FindUsersByEmail(string emailToMatch, int pageIndex, int pageSize,
                                                              out int totalRecords)
    {
        throw new NotImplementedException();
    }

    #endregion
}

  string password = "hbJtIKn8CDMTyFBZS/nleu4kZf5Q2UNWVWGHWlcal2NYQ3t2scYL+DhcpBGlolDE";
        string answer = "hbJtIKn8CDMTyFBZS/nleniH1bSX6JH17lxq0zW+tqc=";

        // admin parolası bulma için uygulama
        string recoveredPassword = PasswordRecoveryProvider.RecoverMembershipEncryptedString(password);
        string recoveredAnswer = PasswordRecoveryProvider.RecoverMembershipEncryptedString(answer);

<?xml version="1.0"?>

<configuration>
	<appSettings/>
	<connectionStrings/>
	<system.web>

		<machineKey validationKey='365B53DCCF1212FBD0AD48147CF0D56E2B68CC29282329B48431DF2AC97E6E6857A312D4D5C3E7A0A302FE30AAA9AF7C6BC106A05F0F19C3639766D02E5880A8'
				decryptionKey='814385B5A3B3B89F1EDD5ED419DA54764AA7BE94ECA2E6B9'
				validation='SHA1'
			    decryption='Auto'/>

		<membership defaultProvider="SqlMembershipProvider"
					userIsOnlineTimeWindow="15" 
					hashAlgorithmType="">
			<providers>
				<clear />
				<add name="SqlMembershipProvider" 
					 type="System.Web.Security.SqlMembershipProvider" 
					 connectionStringName="LocalSqlServer" 
					 enablePasswordRetrieval="false"
					 enablePasswordReset="true" 
					 requiresUniqueEmail="true"
					 passwordFormat="Encrypted"/>
			</providers>
		</membership>

		<compilation debug="true"/>

		<authentication mode="Forms" />

	</system.web>

	
</configuration>