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(Excel) Create ITIDA Signed JSON and Send to ETA (Egypt Tax Authority) Portal

See more Egypt ITIDA Examples

Demonstrates how to create a .p7s signature that fits Egypt's ITIDA requirements where Chilkat automatically does the ITIDA JSON canonicalization. Also shows the code to send to the ETA Portal.

Download Excel Class Modules

Chilkat Excel Class Modules

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

Dim crypt As Chilkat.Crypt2
Set crypt = Chilkat.NewCrypt2
crypt.VerboseLogging = True

Dim cert As Chilkat.Cert
Set cert = Chilkat.NewCert
cert.VerboseLogging = True

' Set the smart card PIN, which will be needed for signing.
cert.SmartCardPin = "12345678"

' There are many ways to load the certificate.  
' This example was created for a customer using an ePass2003 USB token.
' Assuming the USB token is the only source of a hardware-based private key..

success = cert.LoadFromSmartcard("")
If (success <> True) Then
    Debug.Print cert.LastErrorText
    Exit Sub
End If

' Tell the crypt class to use this cert.
success = crypt.SetSigningCert(cert)
If (success <> True) Then
    Debug.Print crypt.LastErrorText
    Exit Sub
End If

Dim cmsOptions As Chilkat.JsonObject
Set cmsOptions = Chilkat.NewJsonObject
' Setting "DigestData" causes OID 1.2.840.113549.1.7.5 (digestData) to be used.
Dim success As Boolean
success = cmsOptions.UpdateBool("DigestData",True)
success = cmsOptions.UpdateBool("OmitAlgorithmIdNull",True)

' Indicate that we are passing normal JSON and we want Chilkat do automatically
' do the ITIDA JSON canonicalization:
success = cmsOptions.UpdateBool("CanonicalizeITIDA",True)

crypt.CmsOptions = cmsOptions.Emit()

' The CadesEnabled property applies to all methods that create CMS/PKCS7 signatures. 
' To create a CAdES-BES signature, set this property equal to true. 
crypt.CadesEnabled = True

crypt.HashAlgorithm = "sha256"

Dim jsonSigningAttrs As Chilkat.JsonObject
Set jsonSigningAttrs = Chilkat.NewJsonObject
success = jsonSigningAttrs.UpdateInt("contentType",1)
success = jsonSigningAttrs.UpdateInt("signingTime",1)
success = jsonSigningAttrs.UpdateInt("messageDigest",1)
success = jsonSigningAttrs.UpdateInt("signingCertificateV2",1)
crypt.SigningAttributes = jsonSigningAttrs.Emit()

' By default, all the certs in the chain of authentication are included in the signature.
' If desired, we can choose to only include the signing certificate:
crypt.IncludeCertChain = False

' Pass a JSON document such as the following.  Chilkat will do the ITIDA canonicalization.
' (It is the canonicalized JSON that gets signed.)

'       {
'          "issuer":{
'             "address":{
'                "branchID":"0",
'                "country":"EG",
'                "regionCity":"Cairo",
'                "postalCode":"",
'                "buildingNumber":"0",
'                "street":"123rd Street",
'                "governate":"GOVERNATE"
'             },
'             "type":"B",
'             "id":"209999899",
'             "name":"Xyz SAE"
'          },
'          "receiver":{
'             "address":{
'                "country":"EG",
'                "regionCity":"CAIRO",
'                "postalCode":"11435",
'                "buildingNumber":"0",
'                "street":"Autostrad Road Abc",
'                "governate":"GOVERNATE"
'             },
'             "type":"B",
'             "id":"999999999",
'             "name":"XYZ EGYPT FOR TRADE"
'          },
'          "documentType":"I",
'          "documentTypeVersion":"1.0",
'          "dateTimeIssued":"2020-11-15T11:04:53Z",
'          "taxpayerActivityCode":"1073",
'          "internalID":"ZZZZ999",
'          "purchaseOrderReference":"2009199918",
'          "salesOrderReference":"",
'          "payment":{
'             "bankName":"",
'             "bankAddress":"",
'             "bankAccountNo":"",
'             "bankAccountIBAN":"",
'             "swiftCode":"",
'             "terms":""
'          },
'          "delivery":{
'             "approach":"",
'             "packaging":"",
'             "dateValidity":"",
'             "exportPort":"",
'             "countryOfOrigin":"EG",
'             "grossWeight":0,
'             "netWeight":0,
'             "terms":""
'          },
'          "invoiceLines":[
'             {
'                "description":"CDM Widget 48GX99X12BA",
'                "itemType":"GS1",
'                "itemCode":"7622213335056",
'                "unitType":"CS",
'                "quantity":1.00,
'                "unitValue":{
'                   "currencySold":"EGP",
'                   "amountEGP":588.67,
'                   "amountSold":0,
'                   "currencyExchangeRate":0
'                },
'                "salesTotal":588.67,
'                "total":603.97,
'                "valueDifference":0,
'                "totalTaxableFees":0,
'                "netTotal":529.8,
'                "itemsDiscount":0,
'                "discount":{
'                   "rate":10.00,
'                   "amount":58.87
'                },
'                "taxableItems":[
'                   {
'                      "taxType":"T1",
'                      "amount":74.17,
'                      "subType":"No sub",
'                      "rate":14.00
'                   }
'                ],
'                "internalCode":"9099994"
'             }
'          ],
'          "totalSales":588.67,
'          "totalSalesAmount":588.67,
'          "totalDiscountAmount":58.87,
'          "netAmount":529.80,
'          "taxTotals":[
'             {
'                "taxType":"T1",
'                "amount":74.17
'             }
'          ],
'          "extraDiscountAmount":0,
'          "totalItemsDiscountAmount":0,
'          "totalAmount":603.97,
'       }

' Build the above JSON..

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

Dim json As Chilkat.JsonObject
Set json = Chilkat.NewJsonObject
success = json.UpdateString("issuer.address.branchID","0")
success = json.UpdateString("issuer.address.country","EG")
success = json.UpdateString("issuer.address.regionCity","Cairo")
success = json.UpdateString("issuer.address.postalCode","")
success = json.UpdateString("issuer.address.buildingNumber","0")
success = json.UpdateString("issuer.address.street","123rd Street")
success = json.UpdateString("issuer.address.governate","GOVERNATE")
success = json.UpdateString("issuer.type","B")
success = json.UpdateString("issuer.id","209999899")
success = json.UpdateString("issuer.name","Xyz SAE")
success = json.UpdateString("receiver.address.country","EG")
success = json.UpdateString("receiver.address.regionCity","CAIRO")
success = json.UpdateString("receiver.address.postalCode","11435")
success = json.UpdateString("receiver.address.buildingNumber","0")
success = json.UpdateString("receiver.address.street","Autostrad Road Abc")
success = json.UpdateString("receiver.address.governate","GOVERNATE")
success = json.UpdateString("receiver.type","B")
success = json.UpdateString("receiver.id","999999999")
success = json.UpdateString("receiver.name","XYZ EGYPT FOR TRADE")
success = json.UpdateString("documentType","I")
success = json.UpdateString("documentTypeVersion","1.0")
success = json.UpdateString("dateTimeIssued","2020-11-15T11:04:53Z")
success = json.UpdateString("taxpayerActivityCode","1073")
success = json.UpdateString("internalID","ZZZZ999")
success = json.UpdateString("purchaseOrderReference","2009199918")
success = json.UpdateString("salesOrderReference","")
success = json.UpdateString("payment.bankName","")
success = json.UpdateString("payment.bankAddress","")
success = json.UpdateString("payment.bankAccountNo","")
success = json.UpdateString("payment.bankAccountIBAN","")
success = json.UpdateString("payment.swiftCode","")
success = json.UpdateString("payment.terms","")
success = json.UpdateString("delivery.approach","")
success = json.UpdateString("delivery.packaging","")
success = json.UpdateString("delivery.dateValidity","")
success = json.UpdateString("delivery.exportPort","")
success = json.UpdateString("delivery.countryOfOrigin","EG")
success = json.UpdateInt("delivery.grossWeight",0)
success = json.UpdateInt("delivery.netWeight",0)
success = json.UpdateString("delivery.terms","")
success = json.UpdateString("invoiceLines[0].description","CDM Widget 48GX99X12BA")
success = json.UpdateString("invoiceLines[0].itemType","GS1")
success = json.UpdateString("invoiceLines[0].itemCode","7622213335056")
success = json.UpdateString("invoiceLines[0].unitType","CS")
success = json.UpdateNumber("invoiceLines[0].quantity","1.00")
success = json.UpdateString("invoiceLines[0].unitValue.currencySold","EGP")
success = json.UpdateNumber("invoiceLines[0].unitValue.amountEGP","588.67")
success = json.UpdateInt("invoiceLines[0].unitValue.amountSold",0)
success = json.UpdateInt("invoiceLines[0].unitValue.currencyExchangeRate",0)
success = json.UpdateNumber("invoiceLines[0].salesTotal","588.67")
success = json.UpdateNumber("invoiceLines[0].total","603.97")
success = json.UpdateInt("invoiceLines[0].valueDifference",0)
success = json.UpdateInt("invoiceLines[0].totalTaxableFees",0)
success = json.UpdateNumber("invoiceLines[0].netTotal","529.8")
success = json.UpdateInt("invoiceLines[0].itemsDiscount",0)
success = json.UpdateNumber("invoiceLines[0].discount.rate","10.00")
success = json.UpdateNumber("invoiceLines[0].discount.amount","58.87")
success = json.UpdateString("invoiceLines[0].taxableItems[0].taxType","T1")
success = json.UpdateNumber("invoiceLines[0].taxableItems[0].amount","74.17")
success = json.UpdateString("invoiceLines[0].taxableItems[0].subType","No sub")
success = json.UpdateNumber("invoiceLines[0].taxableItems[0].rate","14.00")
success = json.UpdateString("invoiceLines[0].internalCode","9099994")
success = json.UpdateNumber("totalSales","588.67")
success = json.UpdateNumber("totalSalesAmount","588.67")
success = json.UpdateNumber("totalDiscountAmount","58.87")
success = json.UpdateNumber("netAmount","529.80")
success = json.UpdateString("taxTotals[0].taxType","T1")
success = json.UpdateNumber("taxTotals[0].amount","74.17")
success = json.UpdateInt("extraDiscountAmount",0)
success = json.UpdateInt("totalItemsDiscountAmount",0)
success = json.UpdateNumber("totalAmount","603.97")

json.EmitCompact = True

jsonToSign = json.Emit()

' Create the CAdES-BES signature.
crypt.EncodingMode = "base64"

' Make sure we sign the utf-8 byte representation of the JSON string
crypt.Charset = "utf-8"


sigBase64 = crypt.SignStringENC(jsonToSign)
If (crypt.LastMethodSuccess = False) Then
    Debug.Print crypt.LastErrorText
    Exit Sub
End If

Debug.Print "Base64 signature:"
Debug.Print sigBase64

' Insert the base64 signature into the JSON to be sent
success = json.UpdateString("signatures[0].signatureType","I")
success = json.UpdateString("signatures[0].value",sigBase64)

' ------------------------------------------------------------------------
' Get an access token using our client ID and client secret key

clientId = "abc999ff-1234"

clientSecretKey = "123fff22-1234-abcd"

Dim http As Chilkat.Http
Set http = Chilkat.NewHttp

' Causes the Authorization: Basic header to be added..
http.Login = clientId
http.Password = clientSecretKey
http.BasicAuth = True

Dim req As Chilkat.HttpRequest
Set req = Chilkat.NewHttpRequest
req.HttpVerb = "POST"
req.Path = "/connect/token"
req.ContentType = "application/x-www-form-urlencoded"
req.AddParam "grant_type","client_credentials"
req.AddHeader "Connection","close"

http.Accept = "application/json"


Set resp = http.PostUrlEncoded("https://id.preprod.eta.gov.eg/connect/token",req)
If (http.LastMethodSuccess = False) Then
    Debug.Print http.LastErrorText
    Exit Sub
End If

success = http.CloseAllConnections()

Debug.Print "Response status code: "; resp.StatusCode
Debug.Print "Response body:"
Debug.Print resp.BodyStr

If (resp.StatusCode <> 200) Then
    Debug.Print "Failed."

    Exit Sub
End If

Dim jsonToken As Chilkat.JsonObject
Set jsonToken = Chilkat.NewJsonObject
success = jsonToken.Load(resp.BodyStr)


accessToken = jsonToken.StringOf("access_token")
Debug.Print "access_token = "; accessToken

' ------------------------------------------------------------------------
' Submit the signed JSON to the ETA (Egypt Tax Authority) Portal

' No longer sending basic authentication...
http.Login = ""
http.Password = ""
http.BasicAuth = False

' Setting the AuthToken property causes the "Authorization: Bearer <token>" header to be added to each request.
http.AuthToken = accessToken

Set resp = http.PostJson3("https://api.preprod.invoicing.eta.gov.eg/api/v1/documentsubmissions","application/json; charset=utf-8",json)
If (http.LastMethodSuccess = False) Then
    Debug.Print http.LastErrorText
    Exit Sub
End If

Debug.Print "Response status code: "; resp.StatusCode
Debug.Print "Response body:"
Debug.Print resp.BodyStr

 

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