Chilkat Examples

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(Xojo Plugin) 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.

Chilkat Xojo Plugin Download

Xojo Plugin for Windows, Linux, Mac OS X, and ARM, ARM64

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

// Indicate that utf-8 is desired for strings passed in and out of Chilkat.
Dim glob As New Chilkat.CkGlobal
glob.DefaultUtf8 = True

Dim crypt As New Chilkat.Crypt2
crypt.VerboseLogging = True

Dim cert As New Chilkat.Cert
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..
Dim success As Boolean
success = cert.LoadFromSmartcard("")
If (success <> True) Then
    System.DebugLog(cert.LastErrorText)
    Return
End If

// Tell the crypt class to use this cert.
success = crypt.SetSigningCert(cert)
If (success <> True) Then
    System.DebugLog(crypt.LastErrorText)
    Return
End If

Dim cmsOptions As New Chilkat.JsonObject
// Setting "DigestData" causes OID 1.2.840.113549.1.7.5 (digestData) to be used.
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 New Chilkat.JsonObject
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 New Chilkat.JsonObject
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
Dim jsonToSign As String
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"

Dim sigBase64 As String
sigBase64 = crypt.SignStringENC(jsonToSign)
If (crypt.LastMethodSuccess = False) Then
    System.DebugLog(crypt.LastErrorText)
    Return
End If

System.DebugLog("Base64 signature:")
System.DebugLog(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)

// Wrap the JSON in  {"documents":[ ... ]}
Dim sbToSend As New Chilkat.StringBuilder
success = sbToSend.Append("{""documents"":[")
success = sbToSend.Append(json.Emit())
success = sbToSend.Append("]}")

// ------------------------------------------------------------------------
// Get an access token using our client ID and client secret key
Dim clientId As String
clientId = "abc999ff-1234"
Dim clientSecretKey As String
clientSecretKey = "123fff22-1234-abcd"

Dim http As New Chilkat.Http

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

Dim req As New Chilkat.HttpRequest
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"

Dim resp As Chilkat.HttpResponse
resp = http.PostUrlEncoded("https://id.preprod.eta.gov.eg/connect/token",req)
If (http.LastMethodSuccess = False) Then
    System.DebugLog(http.LastErrorText)
    Return
End If

success = http.CloseAllConnections()

System.DebugLog("Response status code: " + Str(resp.StatusCode))
System.DebugLog("Response body:")
System.DebugLog(resp.BodyStr)

If (resp.StatusCode <> 200) Then
    System.DebugLog("Failed.")

    Return
End If

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

Dim accessToken As String
accessToken = jsonToken.StringOf("access_token")
System.DebugLog("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

resp = http.PostJson2("https://api.preprod.invoicing.eta.gov.eg/api/v1/documentsubmissions","application/json; charset=utf-8",sbToSend.GetAsString())
If (http.LastMethodSuccess = False) Then
    System.DebugLog(http.LastErrorText)
    Return
End If

System.DebugLog("Response status code: " + Str(resp.StatusCode))
System.DebugLog("Response body:")
System.DebugLog(resp.BodyStr)

 

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