Twilio Authy 2FA for OneCode C# Implementation

问题

I am developing a web application using C# that uses 2 factor authentication during Sign Up. I have already tried 2FA using Nexmo's API. It worked fine. All I had to do was call their API and speciy the 'to' number. Here is the code:

public ActionResult Start(string to)
{
    var start = NumberVerify.Verify(new NumberVerify.VerifyRequest
    {
        number = to,
        brand = "NexmoQS"
    });
    Session["requestID"] = start.request_id;

    return View();
}

Now, I decided to give Twilio a try. I came across Authy and it's process. I found their 2FA API here. But I don't understand where should I enter the 'to' number as specified in Nexmo. I am a beginner and using .NET(C#) code snippet. Here is the code snippet. Please help me configure this code as I am able to do in Nexmo.

public static async Task VerifyPhoneAsync()
  {
    // Create client
    var client = new HttpClient();

    // Add authentication header
    client.DefaultRequestHeaders.Add("X-Authy-API-Key", AuthyAPIKey);

    // https://api.authy.com/protected/$AUTHY_API_FORMAT/phones/verification/check?phone_number=$USER_PHONE&country_code=$USER_COUNTRY&verification_code=$VERIFY_CODE
    HttpResponseMessage response = await client.GetAsync("https://api.authy.com/protected/json/phones/verification/check?phone_number=5558675309&country_code=1&verification_code=3043");

    // Get the response content.
    HttpContent responseContent = response.Content;

    // Get the stream of the content.
      using (var reader = new StreamReader(await responseContent.ReadAsStreamAsync()))
      {
        // Write the output.
        Console.WriteLine(await reader.ReadToEndAsync());
      }
    }

They have given a cURL implementation of their api here, please help me configure it in C#.

curl "http://api.authy.com/protected/json/users/new?api_key=d57d919d11e6b221c9bf6f7c882028f9" \
-d user[email]="user@domain.com" \
-d user[cellphone]="317-338-9302" \
-d user[country_code]="54"

回答1:

Twilio developer evangelist here.

When making a call to the API, you do need to add the X-Authy-API-Key header as well as a URL parameter api_key. Also, to start the process of verifying a number you should be making a POST request with the data you need to send to the API.

The two bits of data that you need are the phone number and the country code for that phone number. Though you can set some other values, like the way you want to send the verification code (via sms or call).

I would update your code to look like this:

public static async Task StartVerifyPhoneAsync()
  {
    // Create client
    var client = new HttpClient();

    var AuthyAPIKey = 'YOUR AUTHY API KEY';

    // Add authentication header
    client.DefaultRequestHeaders.Add("X-Authy-API-Key", AuthyAPIKey);

    var values = new Dictionary<string, string>
    {
      { "phone_number", "PHONE NUMBER TO VERIFY" },
      { "country_code", "COUNTRY CODE FOR PHONE NUMBER" }
    };

    var content = new FormUrlEncodedContent(values);

    var url = $"https://api.authy.com/protected/json/phones/verification/start?api_key={AuthyAPIKey}";

    HttpResponseMessage response = await client.PostAsync(url, content);

    // do something with the response
  }

Then when the user enters the code, you need to check it. Again you should add the API key as a header and send as a URL parameter too, along with the phone number, country code and the verification code the user entered, this time as a GET request.

public static async Task CheckVerifyPhoneAsync()
  {
    // Create client
    var client = new HttpClient();

    var AuthyAPIKey = 'YOUR AUTHY API KEY';

    // Add authentication header
    client.DefaultRequestHeaders.Add("X-Authy-API-Key", AuthyAPIKey);

    var phone_number = "PHONE NUMBER TO VERIFY";
    var country_code = "COUNTRY CODE FOR PHONE NUMBER";
    var verification_code = "THE CODE ENTERED BY THE USER";
    var url = $"https://api.authy.com/protected/json/phones/verification/start?api_key={AuthyAPIKey}&phone_number={phone_number}&country_code={country_code}&verification_code={verification_code}";

    HttpResponseMessage response = await client.GetAsync(url);

    // do something with the response
  }

Let me know if that helps at all.

来源：https://stackoverflow.com/questions/46368870/twilio-authy-2fa-for-onecode-c-sharp-implementation

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