첨부 실행 코드는 나눔고딕코딩 폰트를 사용합니다.
유용한 소스 코드가 있으면 icodebroker@naver.com으로 보내주시면 감사합니다.
블로그 자료는 자유롭게 사용하세요.

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TestProject.zip
0.01MB

▶ MainWindow.xaml

<Window x:Class="TestProject.MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Width="800"
    Height="600"
    Title="TOTP(Time-based One-Time Password) 사용하기"
    FontFamily="나눔고딕코딩"
    FontSize="16">
    <Grid>
        <StackPanel Margin="10">
            <GroupBox Name="keyGroup" Header="공유 키"
                Padding="10">
                <Grid>
                    <Grid.ColumnDefinitions>
                        <ColumnDefinition Width="Auto" />
                        <ColumnDefinition Width="10"   />
                        <ColumnDefinition Width="Auto" />
                        <ColumnDefinition Width="10"   />
                        <ColumnDefinition Width="*"    />
                    </Grid.ColumnDefinitions>
                    <Grid.RowDefinitions>
                        <RowDefinition Height="Auto" />
                        <RowDefinition Height="10"   />
                        <RowDefinition Height="Auto" />
                    </Grid.RowDefinitions>
                    <Label Grid.Row="0" Grid.Column="0"
                        VerticalAlignment="Center"
                        Content="키 길이" />
                    <TextBox Name="keyLengthTextBox" Grid.Row="0" Grid.Column="2"
                        VerticalAlignment="Center"
                        Width="50"
                        Height="25"
                        HorizontalContentAlignment="Right"
                        VerticalContentAlignment="Center"
                        Text="20" />
                    <Button Name="createKeyButton" Grid.Row="0" Grid.Column="4"
                        HorizontalAlignment="Left"
                        VerticalAlignment="Center"
                        Width="100"
                        Height="30"
                        Content="키 생성" />
                    <Label Grid.Row="2" Grid.Column="0"
                        VerticalAlignment="Center"
                        Content="생성 키" />
                    <TextBox Name="keyTextBox" Grid.Row="2" Grid.Column="2" Grid.ColumnSpan="3"
                        HorizontalAlignment="Left"
                        VerticalAlignment="Center"
                        Width="300"
                        Height="25"
                        VerticalContentAlignment="Center"
                        Text="" />
                </Grid>
            </GroupBox>
            <GroupBox Header="TOPT 코드"
                Margin="0 10 0 0"
                Padding="10">
                <Grid>
                    <Grid.ColumnDefinitions>
                        <ColumnDefinition Width="Auto" />
                        <ColumnDefinition Width="10"   />
                        <ColumnDefinition Width="Auto" />
                        <ColumnDefinition Width="10"   />
                        <ColumnDefinition Width="*"    />
                    </Grid.ColumnDefinitions>
                    <Button Name="createCodeButton" Grid.Column="0"
                        VerticalAlignment="Center"
                        Width="100"
                        Height="30"
                        Content="코드 생성" />
                    <Label Grid.Row="0" Grid.Column="2"
                        VerticalAlignment="Center"
                        Content="TOPT 코드" />
                    <TextBox Name="codeTextBox" Grid.Column="4"
                        HorizontalAlignment="Left"
                        VerticalAlignment="Center"
                        Width="150"
                        Height="25"
                        VerticalContentAlignment="Center"
                        Text="" />
                </Grid>
            </GroupBox>
            <GroupBox Header="검증"
                Margin="0 10 0 0"
                Padding="10">
                <Grid>
                    <Grid.ColumnDefinitions>
                        <ColumnDefinition Width="Auto" />
                        <ColumnDefinition Width="10"   />
                        <ColumnDefinition Width="Auto" />
                        <ColumnDefinition Width="10"   />
                        <ColumnDefinition Width="*"    />
                    </Grid.ColumnDefinitions>
                    <Button Name="validateButton" Grid.Column="0"
                        VerticalAlignment="Center"
                        Width="100"
                        Height="30"
                        Content="검증" />
                    <Label Grid.Column="2"
                        VerticalAlignment="Center"
                        Content="검증 결과" />
                    <TextBox Name="resultTextBox" Grid.Column="4"
                        HorizontalAlignment="Left"
                        VerticalAlignment="Center"
                        Width="100"
                        Height="25"
                        VerticalContentAlignment="Center"
                        IsReadOnly="True"
                        Text="" />
                </Grid>
            </GroupBox>
        </StackPanel>
    </Grid>
</Window>

 

▶ MainWindow.xaml.cs

using System.Windows;
using System.Windows.Controls;

using OtpNet;

namespace TestProject
{
    /// <summary>
    /// 메인 윈도우
    /// </summary>
    public partial class MainWindow : Window
    {
        //////////////////////////////////////////////////////////////////////////////////////////////////// Field
        ////////////////////////////////////////////////////////////////////////////////////////// Private

        #region Field

        /// <summary>
        /// TOTP
        /// </summary>
        private Totp totp = null;

        #endregion

        //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor
        ////////////////////////////////////////////////////////////////////////////////////////// Public

        #region 생성자 - MainWindow()

        /// <summary>
        /// 생성자
        /// </summary>
        public MainWindow()
        {
            InitializeComponent();

            this.createKeyButton.Click  += createKeyButton_Click;
            this.keyTextBox.TextChanged += keyTextBox_TextChanged;
            this.createCodeButton.Click += createCodeButton_Click;
            this.validateButton.Click   += validateButton_Click;
        }

        #endregion

        //////////////////////////////////////////////////////////////////////////////////////////////////// Method
        ////////////////////////////////////////////////////////////////////////////////////////// Private

        #region 키 생성 버튼 클릭시 처리하기 - createKeyButton_Click(sender, e)

        /// <summary>
        /// 키 생성 버튼 클릭시 처리하기
        /// </summary>
        /// <param name="sender">이벤트 발생자</param>
        /// <param name="e">이벤트 인자</param>
        private void createKeyButton_Click(object sender, RoutedEventArgs e)
        {
            this.keyTextBox.Clear();

            int keyLength;

            if(!int.TryParse(this.keyLengthTextBox.Text, out keyLength))
            {
                MessageBox.Show(this, "키 길이 항목을 입력해 주시기 바랍니다.", "확인", MessageBoxButton.OK, MessageBoxImage.Information);

                this.keyLengthTextBox.Focus();

                this.keyLengthTextBox.SelectAll();

                return;
            }

            if(keyLength < 10 || keyLength > 30)
            {
                MessageBox.Show(this, "키 길이 항목의 값을 10 ~ 30 사이에서 입력해 주시기 바랍니다.", "확인", MessageBoxButton.OK, MessageBoxImage.Information);

                this.keyLengthTextBox.Focus();

                this.keyLengthTextBox.SelectAll();

                return;
            }

            byte[] keyByteArray = KeyGeneration.GenerateRandomKey(keyLength);
            
            string key = Base32Encoding.ToString(keyByteArray);
            
            this.keyTextBox.Text = key;

            this.keyTextBox.Focus();

            this.keyTextBox.SelectAll();

            Clipboard.SetText(key);
        }

        #endregion
        #region 키 텍스트 박스 텍스트 변경시 처리하기 - keyTextBox_TextChanged(sender, e)

        /// <summary>
        /// 키 텍스트 박스 텍스트 변경시 처리하기
        /// </summary>
        /// <param name="sender">이벤트 발생자</param>
        /// <param name="e">이벤트 인자</param>
        private void keyTextBox_TextChanged(object sender, TextChangedEventArgs e)
        {
            string key = this.keyTextBox.Text.Trim();

            byte[] keyByteArray = Base32Encoding.ToBytes(key);

            this.totp = new Totp(keyByteArray);
        }

        #endregion
        #region 코드 생성 버튼 클릭시 처리하기 - createCodeButton_Click(sender, e)

        /// <summary>
        /// 코드 생성 버튼 클릭시 처리하기
        /// </summary>
        /// <param name="sender">이벤트 발생자</param>
        /// <param name="e">이벤트 인자</param>
        private void createCodeButton_Click(object sender, RoutedEventArgs e)
        {
            this.codeTextBox.Clear();

            string key = this.keyTextBox.Text.Trim();

            if(string.IsNullOrWhiteSpace(key))
            {
                MessageBox.Show(this, "공유 키 항목을 입력해 주시기 바랍니다.", "확인", MessageBoxButton.OK, MessageBoxImage.Information);

                this.keyTextBox.Focus();

                this.keyTextBox.SelectAll();

                return;
            }

            byte[] keyByteArray = Base32Encoding.ToBytes(key);

            Totp totp = new Totp(keyByteArray);

            string code = totp.ComputeTotp();

            this.codeTextBox.Text = code;

            this.codeTextBox.Focus();

            this.codeTextBox.SelectAll();

            Clipboard.SetText(code);
        }

        #endregion
        #region 검증 버튼 클릭시 처리하기 - validateButton_Click(sender, e)

        /// <summary>
        /// 검증 버튼 클릭시 처리하기
        /// </summary>
        /// <param name="sender">이벤트 발생자</param>
        /// <param name="e">이벤트 인자</param>
        private void validateButton_Click(object sender, RoutedEventArgs e)
        {
            this.resultTextBox.Clear();

            string key = this.keyTextBox.Text.Trim();

            if(string.IsNullOrWhiteSpace(key))
            {
                MessageBox.Show(this, "공유 키 항목을 입력해 주시기 바랍니다.", "확인", MessageBoxButton.OK, MessageBoxImage.Information);

                this.keyTextBox.Focus();

                this.keyTextBox.SelectAll();

                return;
            }

            string code = this.codeTextBox.Text.Trim();

            if(string.IsNullOrWhiteSpace(code))
            {
                MessageBox.Show(this, "TOPT 코드 항목을 입력해 주시기 바랍니다.", "확인", MessageBoxButton.OK, MessageBoxImage.Information);

                this.codeTextBox.Focus();

                this.codeTextBox.SelectAll();

                return;
            }

            bool result = this.totp.VerifyTotp(code, out long timeStepMatched, VerificationWindow.RfcSpecifiedNetworkDelay);

            this.resultTextBox.Text = result ? "VALID" : "INVALID";
        }

        #endregion
    }
}
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Posted by 사용자 icodebroker

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