(PowerShell) 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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Add-Type -Path "C:\chilkat\ChilkatDotNet47-9.5.0-x64\ChilkatDotNet47.dll"

# 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.
$glob = New-Object Chilkat.Global
$glob.DefaultUtf8 = $true

$crypt = New-Object Chilkat.Crypt2
$crypt.VerboseLogging = $true

$cert = New-Object 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..
$success = $cert.LoadFromSmartcard("")
if ($success -ne $true) {
    $($cert.LastErrorText)
    exit
}

# Tell the crypt class to use this cert.
$success = $crypt.SetSigningCert($cert)
if ($success -ne $true) {
    $($crypt.LastErrorText)
    exit
}

$cmsOptions = New-Object Chilkat.JsonObject
# Setting "DigestData" causes OID 1.2.840.113549.1.7.5 (digestData) to be used.
$cmsOptions.UpdateBool("DigestData",$true)
$cmsOptions.UpdateBool("OmitAlgorithmIdNull",$true)

# Indicate that we are passing normal JSON and we want Chilkat do automatically
# do the ITIDA JSON canonicalization:
$cmsOptions.UpdateBool("CanonicalizeITIDA",$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"

$jsonSigningAttrs = New-Object Chilkat.JsonObject
$jsonSigningAttrs.UpdateInt("contentType",1)
$jsonSigningAttrs.UpdateInt("signingTime",1)
$jsonSigningAttrs.UpdateInt("messageDigest",1)
$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

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

$("Base64 signature:")
$($sigBase64)

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

# Wrap the JSON in  {"documents":[ ... ]}
$sbToSend = New-Object Chilkat.StringBuilder
$sbToSend.Append("{`"documents`":[")
$sbToSend.Append($json.Emit())
$sbToSend.Append("]}")

# ------------------------------------------------------------------------
# Get an access token using our client ID and client secret key
$clientId = "abc999ff-1234"
$clientSecretKey = "123fff22-1234-abcd"

$http = New-Object Chilkat.Http

# Causes the Authorization: Basic header to be added..
$http.Login = $clientId
$http.Password = $clientSecretKey
$http.BasicAuth = $true

$req = New-Object 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"

$resp = $http.PostUrlEncoded("https://id.preprod.eta.gov.eg/connect/token",$req)
if ($http.LastMethodSuccess -eq $false) {
    $($http.LastErrorText)
    exit
}

$http.CloseAllConnections()

$("Response status code: " + $resp.StatusCode)
$("Response body:")
$($resp.BodyStr)

if ($resp.StatusCode -ne 200) {
    $("Failed.")

    exit
}

$jsonToken = New-Object Chilkat.JsonObject
$success = $jsonToken.Load($resp.BodyStr)

$accessToken = $jsonToken.StringOf("access_token")
$("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 -eq $false) {
    $($http.LastErrorText)
    exit
}

$("Response status code: " + $resp.StatusCode)
$("Response body:")
$($resp.BodyStr)