(VB.NET) Calculate a X_RISKIFIED_HMAC_SHA256 for riskified.com API Calls

Demonstrates how to calculate the value for the X_RISKIFIED_HMAC_SHA256 header for riskified.com HTTP requests (REST API calls).

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

' Create the JSON that is to be the body of the HTTP request.
' The JSON created by this code is shown at the bottom of this example.
' 
' The JSON Code Generator at http://tools.chilkat.io/ can be used
' to generate the following code from sample JSON.

Dim json As New Chilkat.JsonObject
json.UpdateNull("order.cancel_reason")
json.UpdateNull("order.cancelled_at")
json.UpdateString("order.cart_token","68778783ad298f1c80c3bafcddeea02f")
json.UpdateNull("order.closed_at")
json.UpdateString("order.created_at","2008-01-10T11:00:00-05:00")
json.UpdateString("order.currency","USD")
json.UpdateString("order.email","bob.norman@hostmail.com")
json.UpdateString("order.gateway","authorize_net")
json.UpdateNumber("order.id","450789469")
json.UpdateString("order.total_discounts","0.00")
json.UpdateString("order.total_price","409.94")
json.UpdateString("order.updated_at","2008-01-10T11:00:00-05:00")
json.UpdateString("order.note","some note made by the shop’s stuff member")
json.UpdateNull("order.browser_ip")
json.UpdateString("order.discount_codes[0].amount","10.00")
json.UpdateString("order.discount_codes[0].code","TENOFF")
json.UpdateString("order.line_items[0].title","IPod Nano - 8gb - green")
json.UpdateNumber("order.line_items[0].price","199.00")
json.UpdateNumber("order.line_items[0].product_id","632910392")
json.UpdateNumber("order.line_items[0].quantity","1")
json.UpdateString("order.line_items[0].sku","IPOD2008GREEN")
json.UpdateString("order.shipping_lines[0].code","Free Shipping")
json.UpdateString("order.shipping_lines[0].price","0.00")
json.UpdateString("order.shipping_lines[0].title","Free Shipping")
json.UpdateNull("order.payment_details.avs_result_code")
json.UpdateNull("order.payment_details.credit_card_bin")
json.UpdateString("order.payment_details.credit_card_company","Visa")
json.UpdateString("order.payment_details.credit_card_number","XXXX-XXXX-XXXX-4242")
json.UpdateNull("order.payment_details.cvv_result_code")
json.UpdateString("order.payment_details.authorization_id","RK346IK124")
json.UpdateString("order.billing_address.address1","Chestnut Street 92")
json.UpdateString("order.billing_address.address2","")
json.UpdateString("order.billing_address.city","Louisville")
json.UpdateNull("order.billing_address.company")
json.UpdateString("order.billing_address.country","United States")
json.UpdateString("order.billing_address.country_code","US")
json.UpdateString("order.billing_address.first_name","Bob")
json.UpdateString("order.billing_address.last_name","Norman")
json.UpdateString("order.billing_address.name","Bob Norman")
json.UpdateString("order.billing_address.phone","555-625-1199")
json.UpdateString("order.billing_address.province","Kentucky")
json.UpdateString("order.billing_address.province_code","KY")
json.UpdateString("order.billing_address.zip","40202")
json.UpdateString("order.shipping_address.address1","Chestnut Street 92")
json.UpdateString("order.shipping_address.address2","")
json.UpdateString("order.shipping_address.city","Louisville")
json.UpdateNull("order.shipping_address.company")
json.UpdateString("order.shipping_address.country","United States")
json.UpdateString("order.shipping_address.country_code","US")
json.UpdateString("order.shipping_address.first_name","Bob")
json.UpdateString("order.shipping_address.last_name","Norman")
json.UpdateString("order.shipping_address.name","Bob Norman")
json.UpdateString("order.shipping_address.phone","555-625-1199")
json.UpdateString("order.shipping_address.province","Kentucky")
json.UpdateString("order.shipping_address.province_code","KY")
json.UpdateString("order.shipping_address.zip","40202")
json.UpdateString("order.customer.created_at","2013-04-23T13:36:50-04:00")
json.UpdateString("order.customer.email","bob.norman@hostmail.com")
json.UpdateString("order.customer.first_name","Bob")
json.UpdateNumber("order.customer.id","207119551")
json.UpdateString("order.customer.last_name","Norman")
json.UpdateNull("order.customer.note")
json.UpdateNumber("order.customer.orders_count","0")
json.UpdateBool("order.customer.verified_email",True)

' Emit the JSON in compact format..
json.EmitCompact = True
' Get the JSON that will be HMAC'd and will also be the contents of the HTTP request body.
Dim jsonBody As String = json.Emit()

Dim crypt As New Chilkat.Crypt2
crypt.EncodingMode = "hex"
crypt.HashAlgorithm = "sha256"
crypt.MacAlgorithm = "hmac"

crypt.SetMacKeyString("55fe0f4d4023bbdfbc124cabd88bf9bb")

Dim hmacHexStr As String = crypt.MacStringENC(jsonBody)
If (crypt.LastMethodSuccess <> True) Then
    Debug.WriteLine(crypt.LastErrorText)
    Exit Sub
End If


' We need a lowercase hmacHexStr...
Dim sbHmacHex As New Chilkat.StringBuilder
sbHmacHex.Append(hmacHexStr)
sbHmacHex.ToLowercase()

hmacHexStr = sbHmacHex.GetAsString()

Debug.WriteLine("The value of the X_RISKIFIED_HMAC_SHA256 should be: " & hmacHexStr)

' This example is only to show the HMAC SHA256 calculation.
' See examples of sending REST requests to riskified.com at http://rest-examples.chilkat.io/riskified/default.cshtml

' ----------------------------------------------
' This is the JSON created by the above code..

' {
'   "order": {
'     "cancel_reason": null,
'     "cancelled_at": null,
'     "cart_token": "68778783ad298f1c80c3bafcddeea02f",
'     "closed_at": null,
'     "created_at": "2008-01-10T11:00:00-05:00",
'     "currency": "USD",
'     "email": "bob.norman@hostmail.com",
'     "gateway": "authorize_net",
'     "id": 450789469,
'     "total_discounts": "0.00",
'     "total_price": "409.94",
'     "updated_at": "2008-01-10T11:00:00-05:00",
'     "note": "some note made by the shop’s stuff member",
'     "browser_ip": null,
'     "discount_codes": [
'         {
'             "amount": "10.00",
'             "code": "TENOFF"
'         }
'     ],
'     "line_items": [
'         {
'             "title": "IPod Nano - 8gb - green",
'             "price": 199.00,
'             "product_id": 632910392,
'             "quantity": 1,
'             "sku": "IPOD2008GREEN"
'         }
'     ],
'     "shipping_lines": [
'         {
'             "code": "Free Shipping",
'             "price": "0.00",
'             "title": "Free Shipping"
'         }
'     ],
'     "payment_details": {
'         "avs_result_code": null,
'         "credit_card_bin": null,
'         "credit_card_company": "Visa",
'         "credit_card_number": "XXXX-XXXX-XXXX-4242",
'         "cvv_result_code": null,
'         "authorization_id": "RK346IK124"
'     },
'     "billing_address": {
'         "address1": "Chestnut Street 92",
'         "address2": "",
'         "city": "Louisville",
'         "company": null,
'         "country": "United States",
'         "country_code": "US",
'         "first_name": "Bob",
'         "last_name": "Norman",
'         "name": "Bob Norman",
'         "phone": "555-625-1199",
'         "province": "Kentucky",
'         "province_code": "KY",
'         "zip": "40202"
'     },
'     "shipping_address": {
'         "address1": "Chestnut Street 92",
'         "address2": "",
'         "city": "Louisville",
'         "company": null,
'         "country": "United States",
'         "country_code": "US",
'         "first_name": "Bob",
'         "last_name": "Norman",
'         "name": "Bob Norman",
'         "phone": "555-625-1199",
'         "province": "Kentucky",
'         "province_code": "KY",
'         "zip": "40202"
'     },
'     "customer": {
'         "created_at": "2013-04-23T13:36:50-04:00",
'         "email": "bob.norman@hostmail.com",
'         "first_name": "Bob",
'         "id": 207119551,
'         "last_name": "Norman",
'         "note": null,
'         "orders_count": 0,
'         "verified_email": true
'     }
'  }
' }