Sample code for 30+ languages & platforms
C#

Duo Auth API - Check

See more Duo Auth MFA Examples

The /check endpoint can be called to verify that the Auth API integration and secret keys are valid, and that the signature is being generated properly.

Chilkat C# Downloads

C#
bool success = false;

// This example assumes the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

string integrationKey = "DIMS3V5QDVG9J9ABRXC4";
string secretKey = "HWVQ46nubLBxhnRlKddTltWIi3hL0fIQF2qTvLab";

Chilkat.Http http = new Chilkat.Http();

http.Accept = "application/json";

// Use your own hostname here:
string url = "https://api-a03782e1.duosecurity.com/auth/v2/check";

http.Login = integrationKey;
http.Password = secretKey;

string jsonStr = http.QuickGetStr(url);
if (http.LastMethodSuccess == false) {
    Debug.WriteLine(http.LastErrorText);
    return;
}

Debug.WriteLine("status code = " + Convert.ToString(http.LastStatus));
Debug.WriteLine(jsonStr);

// Sample successful output:

// status code = 200
// {"response": {"time": 1632358829}, "stat": "OK"}