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(PureBasic) Create ITIDA Signed JSON and Send to ETA (Egypt Tax Authority) PortalSee more Egypt ITIDA ExamplesDemonstrates 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.
IncludeFile "CkJsonObject.pb" IncludeFile "CkHttpRequest.pb" IncludeFile "CkHttp.pb" IncludeFile "CkCrypt2.pb" IncludeFile "CkGlobal.pb" IncludeFile "CkStringBuilder.pb" IncludeFile "CkHttpResponse.pb" IncludeFile "CkCert.pb" Procedure ChilkatExample() ; 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.i = CkGlobal::ckCreate() If glob.i = 0 Debug "Failed to create object." ProcedureReturn EndIf CkGlobal::setCkDefaultUtf8(glob, 1) crypt.i = CkCrypt2::ckCreate() If crypt.i = 0 Debug "Failed to create object." ProcedureReturn EndIf CkCrypt2::setCkVerboseLogging(crypt, 1) cert.i = CkCert::ckCreate() If cert.i = 0 Debug "Failed to create object." ProcedureReturn EndIf CkCert::setCkVerboseLogging(cert, 1) ; Set the smart card PIN, which will be needed for signing. CkCert::setCkSmartCardPin(cert, "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.i = CkCert::ckLoadFromSmartcard(cert,"") If success <> 1 Debug CkCert::ckLastErrorText(cert) CkGlobal::ckDispose(glob) CkCrypt2::ckDispose(crypt) CkCert::ckDispose(cert) ProcedureReturn EndIf ; Tell the crypt class to use this cert. success = CkCrypt2::ckSetSigningCert(crypt,cert) If success <> 1 Debug CkCrypt2::ckLastErrorText(crypt) CkGlobal::ckDispose(glob) CkCrypt2::ckDispose(crypt) CkCert::ckDispose(cert) ProcedureReturn EndIf cmsOptions.i = CkJsonObject::ckCreate() If cmsOptions.i = 0 Debug "Failed to create object." ProcedureReturn EndIf ; Setting "DigestData" causes OID 1.2.840.113549.1.7.5 (digestData) to be used. CkJsonObject::ckUpdateBool(cmsOptions,"DigestData",1) CkJsonObject::ckUpdateBool(cmsOptions,"OmitAlgorithmIdNull",1) ; Indicate that we are passing normal JSON and we want Chilkat do automatically ; do the ITIDA JSON canonicalization: CkJsonObject::ckUpdateBool(cmsOptions,"CanonicalizeITIDA",1) CkCrypt2::setCkCmsOptions(crypt, CkJsonObject::ckEmit(cmsOptions)) ; The CadesEnabled property applies to all methods that create CMS/PKCS7 signatures. ; To create a CAdES-BES signature, set this property equal to true. CkCrypt2::setCkCadesEnabled(crypt, 1) CkCrypt2::setCkHashAlgorithm(crypt, "sha256") jsonSigningAttrs.i = CkJsonObject::ckCreate() If jsonSigningAttrs.i = 0 Debug "Failed to create object." ProcedureReturn EndIf CkJsonObject::ckUpdateInt(jsonSigningAttrs,"contentType",1) CkJsonObject::ckUpdateInt(jsonSigningAttrs,"signingTime",1) CkJsonObject::ckUpdateInt(jsonSigningAttrs,"messageDigest",1) CkJsonObject::ckUpdateInt(jsonSigningAttrs,"signingCertificateV2",1) CkCrypt2::setCkSigningAttributes(crypt, CkJsonObject::ckEmit(jsonSigningAttrs)) ; 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: CkCrypt2::setCkIncludeCertChain(crypt, 0) ; 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.i = CkJsonObject::ckCreate() If json.i = 0 Debug "Failed to create object." ProcedureReturn EndIf CkJsonObject::ckUpdateString(json,"issuer.address.branchID","0") CkJsonObject::ckUpdateString(json,"issuer.address.country","EG") CkJsonObject::ckUpdateString(json,"issuer.address.regionCity","Cairo") CkJsonObject::ckUpdateString(json,"issuer.address.postalCode","") CkJsonObject::ckUpdateString(json,"issuer.address.buildingNumber","0") CkJsonObject::ckUpdateString(json,"issuer.address.street","123rd Street") CkJsonObject::ckUpdateString(json,"issuer.address.governate","GOVERNATE") CkJsonObject::ckUpdateString(json,"issuer.type","B") CkJsonObject::ckUpdateString(json,"issuer.id","209999899") CkJsonObject::ckUpdateString(json,"issuer.name","Xyz SAE") CkJsonObject::ckUpdateString(json,"receiver.address.country","EG") CkJsonObject::ckUpdateString(json,"receiver.address.regionCity","CAIRO") CkJsonObject::ckUpdateString(json,"receiver.address.postalCode","11435") CkJsonObject::ckUpdateString(json,"receiver.address.buildingNumber","0") CkJsonObject::ckUpdateString(json,"receiver.address.street","Autostrad Road Abc") CkJsonObject::ckUpdateString(json,"receiver.address.governate","GOVERNATE") CkJsonObject::ckUpdateString(json,"receiver.type","B") CkJsonObject::ckUpdateString(json,"receiver.id","999999999") CkJsonObject::ckUpdateString(json,"receiver.name","XYZ EGYPT FOR TRADE") CkJsonObject::ckUpdateString(json,"documentType","I") CkJsonObject::ckUpdateString(json,"documentTypeVersion","1.0") CkJsonObject::ckUpdateString(json,"dateTimeIssued","2020-11-15T11:04:53Z") CkJsonObject::ckUpdateString(json,"taxpayerActivityCode","1073") CkJsonObject::ckUpdateString(json,"internalID","ZZZZ999") CkJsonObject::ckUpdateString(json,"purchaseOrderReference","2009199918") CkJsonObject::ckUpdateString(json,"salesOrderReference","") CkJsonObject::ckUpdateString(json,"payment.bankName","") CkJsonObject::ckUpdateString(json,"payment.bankAddress","") CkJsonObject::ckUpdateString(json,"payment.bankAccountNo","") CkJsonObject::ckUpdateString(json,"payment.bankAccountIBAN","") CkJsonObject::ckUpdateString(json,"payment.swiftCode","") CkJsonObject::ckUpdateString(json,"payment.terms","") CkJsonObject::ckUpdateString(json,"delivery.approach","") CkJsonObject::ckUpdateString(json,"delivery.packaging","") CkJsonObject::ckUpdateString(json,"delivery.dateValidity","") CkJsonObject::ckUpdateString(json,"delivery.exportPort","") CkJsonObject::ckUpdateString(json,"delivery.countryOfOrigin","EG") CkJsonObject::ckUpdateInt(json,"delivery.grossWeight",0) CkJsonObject::ckUpdateInt(json,"delivery.netWeight",0) CkJsonObject::ckUpdateString(json,"delivery.terms","") CkJsonObject::ckUpdateString(json,"invoiceLines[0].description","CDM Widget 48GX99X12BA") CkJsonObject::ckUpdateString(json,"invoiceLines[0].itemType","GS1") CkJsonObject::ckUpdateString(json,"invoiceLines[0].itemCode","7622213335056") CkJsonObject::ckUpdateString(json,"invoiceLines[0].unitType","CS") CkJsonObject::ckUpdateNumber(json,"invoiceLines[0].quantity","1.00") CkJsonObject::ckUpdateString(json,"invoiceLines[0].unitValue.currencySold","EGP") CkJsonObject::ckUpdateNumber(json,"invoiceLines[0].unitValue.amountEGP","588.67") CkJsonObject::ckUpdateInt(json,"invoiceLines[0].unitValue.amountSold",0) CkJsonObject::ckUpdateInt(json,"invoiceLines[0].unitValue.currencyExchangeRate",0) CkJsonObject::ckUpdateNumber(json,"invoiceLines[0].salesTotal","588.67") CkJsonObject::ckUpdateNumber(json,"invoiceLines[0].total","603.97") CkJsonObject::ckUpdateInt(json,"invoiceLines[0].valueDifference",0) CkJsonObject::ckUpdateInt(json,"invoiceLines[0].totalTaxableFees",0) CkJsonObject::ckUpdateNumber(json,"invoiceLines[0].netTotal","529.8") CkJsonObject::ckUpdateInt(json,"invoiceLines[0].itemsDiscount",0) CkJsonObject::ckUpdateNumber(json,"invoiceLines[0].discount.rate","10.00") CkJsonObject::ckUpdateNumber(json,"invoiceLines[0].discount.amount","58.87") CkJsonObject::ckUpdateString(json,"invoiceLines[0].taxableItems[0].taxType","T1") CkJsonObject::ckUpdateNumber(json,"invoiceLines[0].taxableItems[0].amount","74.17") CkJsonObject::ckUpdateString(json,"invoiceLines[0].taxableItems[0].subType","No sub") CkJsonObject::ckUpdateNumber(json,"invoiceLines[0].taxableItems[0].rate","14.00") CkJsonObject::ckUpdateString(json,"invoiceLines[0].internalCode","9099994") CkJsonObject::ckUpdateNumber(json,"totalSales","588.67") CkJsonObject::ckUpdateNumber(json,"totalSalesAmount","588.67") CkJsonObject::ckUpdateNumber(json,"totalDiscountAmount","58.87") CkJsonObject::ckUpdateNumber(json,"netAmount","529.80") CkJsonObject::ckUpdateString(json,"taxTotals[0].taxType","T1") CkJsonObject::ckUpdateNumber(json,"taxTotals[0].amount","74.17") CkJsonObject::ckUpdateInt(json,"extraDiscountAmount",0) CkJsonObject::ckUpdateInt(json,"totalItemsDiscountAmount",0) CkJsonObject::ckUpdateNumber(json,"totalAmount","603.97") CkJsonObject::setCkEmitCompact(json, 1) jsonToSign.s = CkJsonObject::ckEmit(json) ; Create the CAdES-BES signature. CkCrypt2::setCkEncodingMode(crypt, "base64") ; Make sure we sign the utf-8 byte representation of the JSON string CkCrypt2::setCkCharset(crypt, "utf-8") sigBase64.s = CkCrypt2::ckSignStringENC(crypt,jsonToSign) If CkCrypt2::ckLastMethodSuccess(crypt) = 0 Debug CkCrypt2::ckLastErrorText(crypt) CkGlobal::ckDispose(glob) CkCrypt2::ckDispose(crypt) CkCert::ckDispose(cert) CkJsonObject::ckDispose(cmsOptions) CkJsonObject::ckDispose(jsonSigningAttrs) CkJsonObject::ckDispose(json) ProcedureReturn EndIf Debug "Base64 signature:" Debug sigBase64 ; Insert the base64 signature into the JSON to be sent CkJsonObject::ckUpdateString(json,"signatures[0].signatureType","I") CkJsonObject::ckUpdateString(json,"signatures[0].value",sigBase64) ; Wrap the JSON in {"documents":[ ... ]} sbToSend.i = CkStringBuilder::ckCreate() If sbToSend.i = 0 Debug "Failed to create object." ProcedureReturn EndIf CkStringBuilder::ckAppend(sbToSend,"{" + Chr(34) + "documents" + Chr(34) + ":[") CkStringBuilder::ckAppend(sbToSend,CkJsonObject::ckEmit(json)) CkStringBuilder::ckAppend(sbToSend,"]}") ; ------------------------------------------------------------------------ ; Get an access token using our client ID and client secret key clientId.s = "abc999ff-1234" clientSecretKey.s = "123fff22-1234-abcd" http.i = CkHttp::ckCreate() If http.i = 0 Debug "Failed to create object." ProcedureReturn EndIf ; Causes the Authorization: Basic header to be added.. CkHttp::setCkLogin(http, clientId) CkHttp::setCkPassword(http, clientSecretKey) CkHttp::setCkBasicAuth(http, 1) req.i = CkHttpRequest::ckCreate() If req.i = 0 Debug "Failed to create object." ProcedureReturn EndIf CkHttpRequest::setCkHttpVerb(req, "POST") CkHttpRequest::setCkPath(req, "/connect/token") CkHttpRequest::setCkContentType(req, "application/x-www-form-urlencoded") CkHttpRequest::ckAddParam(req,"grant_type","client_credentials") CkHttpRequest::ckAddHeader(req,"Connection","close") CkHttp::setCkAccept(http, "application/json") resp.i = CkHttp::ckPostUrlEncoded(http,"https://id.preprod.eta.gov.eg/connect/token",req) If CkHttp::ckLastMethodSuccess(http) = 0 Debug CkHttp::ckLastErrorText(http) CkGlobal::ckDispose(glob) CkCrypt2::ckDispose(crypt) CkCert::ckDispose(cert) CkJsonObject::ckDispose(cmsOptions) CkJsonObject::ckDispose(jsonSigningAttrs) CkJsonObject::ckDispose(json) CkStringBuilder::ckDispose(sbToSend) CkHttp::ckDispose(http) CkHttpRequest::ckDispose(req) ProcedureReturn EndIf CkHttp::ckCloseAllConnections(http) Debug "Response status code: " + Str(CkHttpResponse::ckStatusCode(resp)) Debug "Response body:" Debug CkHttpResponse::ckBodyStr(resp) If CkHttpResponse::ckStatusCode(resp) <> 200 Debug "Failed." CkHttpResponse::ckDispose(resp) CkGlobal::ckDispose(glob) CkCrypt2::ckDispose(crypt) CkCert::ckDispose(cert) CkJsonObject::ckDispose(cmsOptions) CkJsonObject::ckDispose(jsonSigningAttrs) CkJsonObject::ckDispose(json) CkStringBuilder::ckDispose(sbToSend) CkHttp::ckDispose(http) CkHttpRequest::ckDispose(req) ProcedureReturn EndIf jsonToken.i = CkJsonObject::ckCreate() If jsonToken.i = 0 Debug "Failed to create object." ProcedureReturn EndIf success = CkJsonObject::ckLoad(jsonToken,CkHttpResponse::ckBodyStr(resp)) accessToken.s = CkJsonObject::ckStringOf(jsonToken,"access_token") Debug "access_token = " + accessToken CkHttpResponse::ckDispose(resp) ; ------------------------------------------------------------------------ ; Submit the signed JSON to the ETA (Egypt Tax Authority) Portal ; No longer sending basic authentication... CkHttp::setCkLogin(http, "") CkHttp::setCkPassword(http, "") CkHttp::setCkBasicAuth(http, 0) ; Setting the AuthToken property causes the "Authorization: Bearer <token>" header to be added to each request. CkHttp::setCkAuthToken(http, accessToken) resp = CkHttp::ckPostJson2(http,"https://api.preprod.invoicing.eta.gov.eg/api/v1/documentsubmissions","application/json; charset=utf-8",CkStringBuilder::ckGetAsString(sbToSend)) If CkHttp::ckLastMethodSuccess(http) = 0 Debug CkHttp::ckLastErrorText(http) CkGlobal::ckDispose(glob) CkCrypt2::ckDispose(crypt) CkCert::ckDispose(cert) CkJsonObject::ckDispose(cmsOptions) CkJsonObject::ckDispose(jsonSigningAttrs) CkJsonObject::ckDispose(json) CkStringBuilder::ckDispose(sbToSend) CkHttp::ckDispose(http) CkHttpRequest::ckDispose(req) CkJsonObject::ckDispose(jsonToken) ProcedureReturn EndIf Debug "Response status code: " + Str(CkHttpResponse::ckStatusCode(resp)) Debug "Response body:" Debug CkHttpResponse::ckBodyStr(resp) CkGlobal::ckDispose(glob) CkCrypt2::ckDispose(crypt) CkCert::ckDispose(cert) CkJsonObject::ckDispose(cmsOptions) CkJsonObject::ckDispose(jsonSigningAttrs) CkJsonObject::ckDispose(json) CkStringBuilder::ckDispose(sbToSend) CkHttp::ckDispose(http) CkHttpRequest::ckDispose(req) CkJsonObject::ckDispose(jsonToken) ProcedureReturn EndProcedure |
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