VB.NET

Duo Auth API - Auth

See more Duo Auth MFA Examples

The /auth endpoint performs second-factor authentication for a user by sending a push notification to the user's smartphone app, verifying a passcode, or placing a phone call. It is also used to send the user a new batch of passcodes via SMS. VB.NET

Dim success As Boolean = False

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

Dim integrationKey As String = "DIMS3V5QDVG9J9ABRXC4"
Dim secretKey As String = "HWVQ46nubLBxhnRlKddTltWIi3hL0fIQF2qTvLab"

Dim http As New Chilkat.Http

http.Accept = "application/json"

' Use your own hostname here:
Dim url As String = "https://api-a03782e1.duosecurity.com/auth/v2/auth"

' This example requires Chilkat v9.5.0.89 or greater because Chilkat will automatically
' generate and send the HMAC signature for the requires based on the integration key and secret key.
http.Login = integrationKey
http.Password = secretKey

Dim req As New Chilkat.HttpRequest
req.AddParam("username","matt")
req.AddParam("factor","push")
' The device ID can be obtained from the preauth response.  See Duo Preauth Example
req.AddParam("device","DP6GYVTQ5NK82BMR851F")

req.HttpVerb = "POST"
req.ContentType = "application/x-www-form-urlencoded"

Dim resp As New Chilkat.HttpResponse
success = http.HttpReq(url,req,resp)
If (success = False) Then
    Debug.WriteLine(http.LastErrorText)
    Exit Sub
End If


Debug.WriteLine("status code = " & resp.StatusCode)

Dim json As New Chilkat.JsonObject
success = json.Load(resp.BodyStr)
json.EmitCompact = False
Debug.WriteLine(json.Emit())

' Sample successful output:

' status code = 200

' {
'   "response": {
'     "result": "allow",
'     "status": "allow",
'     "status_msg": "Success. Logging you in..."
'   },
'   "stat": "OK"
' }

' Sample code to parse the above JSON response..

' Use this online tool to generate parsing code from sample JSON: 
' Generate Parsing Code from JSON

Dim responseResult As String = json.StringOf("response.result")
Dim responseStatus As String = json.StringOf("response.status")
Dim responseStatus_msg As String = json.StringOf("response.status_msg")
Dim stat As String = json.StringOf("stat")