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Create Egypt ITIDA CAdES-BES Signature with Automatic JSON Canonicalization
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.Note: This example requires Chilkat v9.5.0.75 or greater.
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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 <> True) Then
ConsoleWrite($oCert.LastErrorText & @CRLF)
Exit
EndIf
; Tell the crypt class to use this cert.
$bSuccess = $oCrypt.SetSigningCert($oCert)
If ($bSuccess <> True) Then
ConsoleWrite($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,
; }
;
$oJson = ObjCreate("Chilkat.JsonObject")
$bSuccess = $oJson.LoadFile("qa_data/itida/sdk.invoicing.eta.gov.eg/files/one-doc.json")
If ($bSuccess = False) Then
ConsoleWrite($oJson.LastErrorText & @CRLF)
Exit
EndIf
$oJson.EmitCompact = False
; 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 = $oCrypt.SignStringENC($oJson.Emit())
If ($oCrypt.LastMethodSuccess = False) Then
ConsoleWrite($oCrypt.LastErrorText & @CRLF)
Exit
EndIf
ConsoleWrite("Base64 signature:" & @CRLF)
ConsoleWrite($sigBase64 & @CRLF)
; Add the signature to the JSON.
$oJson.UpdateString("signatures[0].signatureType","I")
$oJson.UpdateString("signatures[0].value",$sigBase64)
ConsoleWrite("JSON with signature added:" & @CRLF)
ConsoleWrite($oJson.Emit() & @CRLF)