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(VB.NET UWP/WinRT) ShippingEasy.com Calculate Signature for API Authentication

Demonstrates how to calculate the shippingeasy.com API signature for authenticating requests.

Chilkat Universal Windows Platform (UWP) / WinRT Downloads

Chilkat for the Universal Windows Platform (UWP)

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

' 
' First, concatenate these into a plaintext string using the following order:
' 
'     Capitilized method of the request. E.g. "POST"
'     The URI path
'     The query parameters sorted alphabetically and concatenated together into a URL friendly format: param1=ABC&param2=XYZ
'     The request body as a string if one exists
'     All parts are then concatenated together with an ampersand. The result resembles something like this:
' 
' "POST&/partners/api/accounts&api_key=f9a7c8ebdfd34beaf260d9b0296c7059&api_timestamp=1401803554&{ ... request body ... }"


Dim success As Boolean
Dim sbStringToSign As New Chilkat.StringBuilder

Dim httpVerb As String = "POST"
Dim uriPath As String = "/partners/api/accounts"
Dim queryParamsStr As String = "api_key=YOUR_API_KEY&api_timestamp=UNIX_EPOCH_TIMESTAMP"

' Build the following JSON that will be the body of the request:

' {
'   "account": {
'     "first_name": "Coralie",
'     "last_name": "Waelchi",
'     "company_name": "Hegmann, Cremin and Bradtke",
'     "email": "se_greg_6d477b1e59e8ff24abadfb59d3a2de3e@shippingeasy.com",
'     "phone_number": "1-381-014-3358",
'     "address": "2476 Flo Inlet",
'     "address2": "",
'     "state": "SC",
'     "city": "North Dennis",
'     "postal_code": "29805",
'     "country": "USA",
'     "password": "abc123",
'     "subscription_plan_code": "starter"
'   }
' }

Dim json As New Chilkat.JsonObject
json.UpdateString("account.first_name","Coralie")
json.UpdateString("account.last_name","Waelchi")
json.UpdateString("account.company_name","Hegmann, Cremin and Bradtke")
json.UpdateString("account.email","se_greg_6d477b1e59e8ff24abadfb59d3a2de3e@shippingeasy.com")
json.UpdateString("account.phone_number","1-381-014-3358")
json.UpdateString("account.address","2476 Flo Inlet")
json.UpdateString("account.address2","")
json.UpdateString("account.state","SC")
json.UpdateString("account.city","North Dennis")
json.UpdateString("account.postal_code","29805")
json.UpdateString("account.country","USA")
json.UpdateString("account.password","abc123")
json.UpdateString("account.subscription_plan_code","starter")

json.EmitCompact = False
Debug.WriteLine(json.Emit())

' First, let's get the current date/time in the Unix Epoch Timestamp format (which is just an integer)
Dim dt As New Chilkat.CkDateTime
dt.SetFromCurrentSystemTime()
' Get the UTC time.
Dim bLocalTime As Boolean = False
Dim unixEpochTimestamp As String = dt.GetAsUnixTimeStr(bLocalTime)

' Build the string to sign:
sbStringToSign.Append(httpVerb)
sbStringToSign.Append("&")
sbStringToSign.Append(uriPath)
sbStringToSign.Append("&")
sbStringToSign.Append(queryParamsStr)
sbStringToSign.Append("&")
' Make sure to send the JSON body of a request in compact form..
json.EmitCompact = True
sbStringToSign.Append(json.Emit())

' Use your API key here:
Dim your_api_key As String = "f9a7c8ebdfd34beaf260d9b0296c7059"

Dim numReplaced As Integer = sbStringToSign.Replace("YOUR_API_KEY",your_api_key)
numReplaced = sbStringToSign.Replace("UNIX_EPOCH_TIMESTAMP",unixEpochTimestamp)

' Do the HMAC-SHA256 with your API secret:
Dim your_api_secret As String = "ea210785fa4656af03c2e4ffcc2e7b5fc19f1fba577d137905cc97e74e1df53d"
Dim crypt As New Chilkat.Crypt2
crypt.MacAlgorithm = "hmac"
crypt.EncodingMode = "hexlower"
crypt.SetMacKeyString(your_api_secret)
crypt.HashAlgorithm = "sha256"

Dim api_signature As String = crypt.MacStringENC(sbStringToSign.GetAsString())
Debug.WriteLine("api_signature: " & api_signature)

' --------------------------------------------------------------------
' Here's an example showing how to use the signature in a request:

' Build a new string-to-sign and create a new api_signature for the actual request we'll be sending...
sbStringToSign.Clear()
sbStringToSign.Append("GET")
sbStringToSign.Append("&")
sbStringToSign.Append("/app.shippingeasy.com/api/orders")
sbStringToSign.Append("&")
sbStringToSign.Append(queryParamsStr)
sbStringToSign.Append("&")
' There is no body for a GET request.

api_signature = crypt.MacStringENC(sbStringToSign.GetAsString())

Dim http As New Chilkat.Http
Dim queryParams As New Chilkat.JsonObject

queryParams.UpdateString("api_signature",api_signature)
queryParams.UpdateString("api_timestamp",unixEpochTimestamp)
queryParams.UpdateString("api_key",your_api_key)

Dim resp As Chilkat.HttpResponse = Await http.QuickRequestParamsAsync("GET","https://app.shippingeasy.com/api/orders",queryParams)
If (http.LastMethodSuccess = False) Then
    Debug.WriteLine(http.LastErrorText)
    Exit Sub
End If


Debug.WriteLine("response status code = " & resp.StatusCode)
Debug.WriteLine("response body:")
Debug.WriteLine(resp.BodyStr)



 

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