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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.

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Local $bSuccess = False

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

$oCrypt = ObjCreate("Chilkat.Crypt2")
$oCrypt.VerboseLogging = True

$oCert = ObjCreate("Chilkat.Cert")
$oCert.VerboseLogging = True

; Set the smart card PIN, which will be needed for signing.
$oCert.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..
$bSuccess = $oCert.LoadFromSmartcard("")
If ($bSuccess = False) Then
    ConsoleWrite($oCert.LastErrorText & @CRLF)
    Exit
EndIf

; Tell the crypt class to use this cert.
$bSuccess = $oCrypt.SetSigningCert($oCert)
If ($bSuccess = False) Then
    ConsoleWrite($oCrypt.LastErrorText & @CRLF)
    Exit
EndIf

$oCmsOptions = ObjCreate("Chilkat.JsonObject")
; Setting "DigestData" causes OID 1.2.840.113549.1.7.5 (digestData) to be used.
$oCmsOptions.UpdateBool("DigestData",True)
$oCmsOptions.UpdateBool("OmitAlgorithmIdNull",True)

; Indicate that we are passing normal JSON and we want Chilkat do automatically
; do the ITIDA JSON canonicalization:
$oCmsOptions.UpdateBool("CanonicalizeITIDA",True)

$oCrypt.CmsOptions = $oCmsOptions.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. 
$oCrypt.CadesEnabled = True

$oCrypt.HashAlgorithm = "sha256"

$oJsonSigningAttrs = ObjCreate("Chilkat.JsonObject")
$oJsonSigningAttrs.UpdateInt("contentType",1)
$oJsonSigningAttrs.UpdateInt("signingTime",1)
$oJsonSigningAttrs.UpdateInt("messageDigest",1)
$oJsonSigningAttrs.UpdateInt("signingCertificateV2",1)
$oCrypt.SigningAttributes = $oJsonSigningAttrs.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:
$oCrypt.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

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

$oJson.EmitCompact = True
Local $sJsonToSign = $oJson.Emit()

; Create the CAdES-BES signature.
$oCrypt.EncodingMode = "base64"

; Make sure we sign the utf-8 byte representation of the JSON string
$oCrypt.Charset = "utf-8"

Local $sigBase64 = $oCrypt.SignStringENC($sJsonToSign)
If ($oCrypt.LastMethodSuccess = False) Then
    ConsoleWrite($oCrypt.LastErrorText & @CRLF)
    Exit
EndIf

ConsoleWrite("Base64 signature:" & @CRLF)
ConsoleWrite($sigBase64 & @CRLF)

; Insert the base64 signature into the JSON to be sent
$oJson.UpdateString("signatures[0].signatureType","I")
$oJson.UpdateString("signatures[0].value",$sigBase64)

; Wrap the JSON in  {"documents":[ ... ]}
$oSbToSend = ObjCreate("Chilkat.StringBuilder")
$oSbToSend.Append("{""documents"":[")
$oSbToSend.Append($oJson.Emit())
$oSbToSend.Append("]}")

; ------------------------------------------------------------------------
; Get an access token using our client ID and client secret key
Local $sClientId = "abc999ff-1234"
Local $sClientSecretKey = "123fff22-1234-abcd"

$oHttp = ObjCreate("Chilkat.Http")

; Causes the Authorization: Basic header to be added..
$oHttp.Login = $sClientId
$oHttp.Password = $sClientSecretKey
$oHttp.BasicAuth = True

$oReq = ObjCreate("Chilkat.HttpRequest")
$oReq.HttpVerb = "POST"
$oReq.Path = "/connect/token"
$oReq.ContentType = "application/x-www-form-urlencoded"
$oReq.AddParam "grant_type","client_credentials"
$oReq.AddHeader "Connection","close"

$oHttp.Accept = "application/json"

$oResp = ObjCreate("Chilkat.HttpResponse")
$bSuccess = $oHttp.HttpReq("https://id.preprod.eta.gov.eg/connect/token",$oReq,$oResp)
If ($bSuccess = False) Then
    ConsoleWrite($oHttp.LastErrorText & @CRLF)
    Exit
EndIf

$oHttp.CloseAllConnections()

ConsoleWrite("Response status code: " & $oResp.StatusCode & @CRLF)
ConsoleWrite("Response body:" & @CRLF)
ConsoleWrite($oResp.BodyStr & @CRLF)

If ($oResp.StatusCode <> 200) Then
    ConsoleWrite("Failed." & @CRLF)
    Exit
EndIf

$oJsonToken = ObjCreate("Chilkat.JsonObject")
$bSuccess = $oJsonToken.Load($oResp.BodyStr)

Local $sAccessToken = $oJsonToken.StringOf("access_token")
ConsoleWrite("access_token = " & $sAccessToken & @CRLF)

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

; No longer sending basic authentication...
$oHttp.Login = ""
$oHttp.Password = ""
$oHttp.BasicAuth = False

; Setting the AuthToken property causes the "Authorization: Bearer <token>" header to be added to each request.
$oHttp.AuthToken = $sAccessToken

Local $sJsonStr = $oSbToSend.GetAsString()
Local $sUrl = "https://api.preprod.invoicing.eta.gov.eg/api/v1/documentsubmissions"
$bSuccess = $oHttp.HttpStr("POST",$sUrl,$sJsonStr,"utf-8","application/json; charset=utf-8",$oResp)
If ($bSuccess = False) Then
    ConsoleWrite($oHttp.LastErrorText & @CRLF)
    Exit
EndIf

ConsoleWrite("Response status code: " & $oResp.StatusCode & @CRLF)
ConsoleWrite("Response body:" & @CRLF)
ConsoleWrite($oResp.BodyStr & @CRLF)