Windows Phone Security : Encrypt and Decrypt

Often times you may want to secure the user data. However, there is one native API to support

 using System.Security.Cryptography;

using System.Text;

 byte[] secretPassword; // to store it in a variable 

private void btnEncrypt_Click(object sender, RoutedEventArgs e)

{

    //Convert the text to byte[] 

    byte[] clearPassword = Encoding.UTF8.GetBytes(txtData.Text);

    //Encrypt

    secretPassword = ProtectedData.Protect(clearPassword, null);

    txtDecryptText.Text = "Encrypted...";

    txtData.Text = "";

}

private void btnDecrypt_Click(object sender, RoutedEventArgs e)

{

    byte[] protectedPassowrd = secretPassword;

    //Decrypt the text

    byte[] unprotectPassword = ProtectedData.Unprotect(protectedPassowrd, null);

    txtDecryptText.Text = Encoding.UTF8.GetString(unprotectPassword, 0, unprotectPassword.Length);

    txtDecryptText.Text = "Decrypted...";

}

Namoskar!!!