DataFlex
DataFlex
ITIDA Debug Signed JSON and HTTP POST
See more Egypt ITIDA Examples
Explains how to debug when problems are encountered with ITIDA canonicalization, signing, and posting to api.preprod.invoicing.eta.gov.eg.The most common error response from the api.preprod.invoicing.eta.gov.eg server is:
ITIDA Signature Invalid Signature * 4043 4043:message-digest attribute value does not match the calculated value[message-digest attribute value does not match the calculated value]
Chilkat DataFlex Downloads
Use ChilkatAx-win32.pkg
Procedure Test
Boolean iSuccess
Handle hoCrypt
Variant vCert
Handle hoCert
Handle hoCmsOptions
Handle hoJsonSigningAttrs
Handle hoJson
String sJsonToSign
String sSigBase64
Handle hoSbToSend
Handle hoHttp
String sJsonStr
Variant vResp
Handle hoResp
String sTemp1
Integer iTemp1
Boolean bTemp1
Move False To iSuccess
// This example assumes the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.
Get Create (RefClass(cComChilkatCrypt2)) To hoCrypt
If (Not(IsComObjectCreated(hoCrypt))) Begin
Send CreateComObject of hoCrypt
End
Set ComVerboseLogging Of hoCrypt To True
Get Create (RefClass(cComChilkatCert)) To hoCert
If (Not(IsComObjectCreated(hoCert))) Begin
Send CreateComObject of hoCert
End
Set ComVerboseLogging Of hoCert To True
// Set the smart card PIN, which will be needed for signing.
Set ComSmartCardPin Of hoCert To "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..
Get ComLoadFromSmartcard Of hoCert "" To iSuccess
If (iSuccess = False) Begin
Get ComLastErrorText Of hoCert To sTemp1
Showln sTemp1
Procedure_Return
End
// Tell the crypt class to use this cert.
Get pvComObject of hoCert to vCert
Get ComSetSigningCert Of hoCrypt vCert To iSuccess
If (iSuccess = False) Begin
Get ComLastErrorText Of hoCrypt To sTemp1
Showln sTemp1
Procedure_Return
End
Get Create (RefClass(cComChilkatJsonObject)) To hoCmsOptions
If (Not(IsComObjectCreated(hoCmsOptions))) Begin
Send CreateComObject of hoCmsOptions
End
// Setting "DigestData" causes OID 1.2.840.113549.1.7.5 (digestData) to be used.
Get ComUpdateBool Of hoCmsOptions "DigestData" True To iSuccess
Get ComUpdateBool Of hoCmsOptions "OmitAlgorithmIdNull" True To iSuccess
// Indicate that we are passing normal JSON and we want Chilkat do automatically
// do the ITIDA JSON canonicalization:
Get ComUpdateBool Of hoCmsOptions "CanonicalizeITIDA" True To iSuccess
Get ComEmit Of hoCmsOptions To sTemp1
Set ComCmsOptions Of hoCrypt To sTemp1
// The CadesEnabled property applies to all methods that create CMS/PKCS7 signatures.
// To create a CAdES-BES signature, set this property equal to true.
Set ComCadesEnabled Of hoCrypt To True
Set ComHashAlgorithm Of hoCrypt To "sha256"
Get Create (RefClass(cComChilkatJsonObject)) To hoJsonSigningAttrs
If (Not(IsComObjectCreated(hoJsonSigningAttrs))) Begin
Send CreateComObject of hoJsonSigningAttrs
End
Get ComUpdateInt Of hoJsonSigningAttrs "contentType" 1 To iSuccess
Get ComUpdateInt Of hoJsonSigningAttrs "signingTime" 1 To iSuccess
Get ComUpdateInt Of hoJsonSigningAttrs "messageDigest" 1 To iSuccess
Get ComUpdateInt Of hoJsonSigningAttrs "signingCertificateV2" 1 To iSuccess
Get ComEmit Of hoJsonSigningAttrs To sTemp1
Set ComSigningAttributes Of hoCrypt To sTemp1
// 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:
Set ComIncludeCertChain Of hoCrypt To False
// First, load the JSON file that is to be canonicalized and signed.
// The JSON file should look like this:
// NOTE: The JSON should not begin with "{ "documents" : [ ..."
// We want to send a single signed document like this:
// {
// "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,
// }
//
// Please include this JSON file as an attachment in your support email to Chilkat.
Get Create (RefClass(cComChilkatJsonObject)) To hoJson
If (Not(IsComObjectCreated(hoJson))) Begin
Send CreateComObject of hoJson
End
Get ComLoadFile Of hoJson "c:/someDir/jsonToSignAndSend.json" To iSuccess
If (iSuccess = False) Begin
Showln "Failed to load input JSON file."
Procedure_Return
End
Set ComEmitCompact Of hoJson To True
Get ComEmit Of hoJson To sJsonToSign
// Create the CAdES-BES signature.
Set ComEncodingMode Of hoCrypt To "base64"
// Make sure we sign the utf-8 byte representation of the JSON string
Set ComCharset Of hoCrypt To "utf-8"
// Turn on verbose logging.
Set ComVerboseLogging Of hoCrypt To True
Get ComSignStringENC Of hoCrypt sJsonToSign To sSigBase64
Get ComLastMethodSuccess Of hoCrypt To bTemp1
If (bTemp1 = False) Begin
Get ComLastErrorText Of hoCrypt To sTemp1
Showln sTemp1
Procedure_Return
End
// The LastErrorText property still contains information when the method succeeds.
// Send the contents of this LastErrorText as an attachment in your support email to Chilkat.
Get ComLastErrorText Of hoCrypt To sTemp1
Showln sTemp1
// Insert the base64 signature into the JSON to be sent
Get ComUpdateString Of hoJson "signatures[0].signatureType" "I" To iSuccess
Get ComUpdateString Of hoJson "signatures[0].value" sSigBase64 To iSuccess
// Wrap the JSON in {"documents":[ ... ]}
Get Create (RefClass(cComChilkatStringBuilder)) To hoSbToSend
If (Not(IsComObjectCreated(hoSbToSend))) Begin
Send CreateComObject of hoSbToSend
End
Get ComAppend Of hoSbToSend '{"documents":[' To iSuccess
Get ComEmit Of hoJson To sTemp1
Get ComAppend Of hoSbToSend sTemp1 To iSuccess
Get ComAppend Of hoSbToSend "]}" To iSuccess
// ------------------------------------------------------------------------
// Submit the signed JSON to Chilkat's URL for simply echoing back the contents of the HTTP POST it receives:
//
// We just want to see what actually gets sent. To do this, we can send to https://www.chilkatsoft.com/echoPostBody.asp
// which will echo in the response that data and headers it received.
Get Create (RefClass(cComChilkatHttp)) To hoHttp
If (Not(IsComObjectCreated(hoHttp))) Begin
Send CreateComObject of hoHttp
End
// Also, set the SessionLogFilename property so we can see the exact bytes of the HTTP request sent from your end.
// Please include this session log file as an attachment in your support email to Chilkat.
Set ComSessionLogFilename Of hoHttp To "c:/someDir/sessionLog.txt"
Get ComGetAsString Of hoSbToSend To sJsonStr
Get Create (RefClass(cComChilkatHttpResponse)) To hoResp
If (Not(IsComObjectCreated(hoResp))) Begin
Send CreateComObject of hoResp
End
Get pvComObject of hoResp to vResp
Get ComHttpStr Of hoHttp "POST" "https://www.chilkatsoft.com/echoPostBody.asp" sJsonStr "utf-8" "application/json; charset=utf-8" vResp To iSuccess
If (iSuccess = False) Begin
Get ComLastErrorText Of hoHttp To sTemp1
Showln sTemp1
Procedure_Return
End
// Save the exact contents of Chilkat's response to a file.
// The server at https://www.chilkatsoft.com/echoPostBody.asp is simply echoing back the headers and POST body it received.
// Please include the responseBody.txt as an attachment in your support email to Chilkat.
Get ComSaveBodyBinary Of hoResp "c:/someDir/responseBody.txt" To iSuccess
Get ComStatusCode Of hoResp To iTemp1
Showln "Response status code: " iTemp1
// -------------------------------------------------
// In summary, please include the following in your support email to Chilkat
// 1. The original JSON file before signing and before canonicalization (i.e. c:/someDir/jsonToSignAndSend.json)
// 2. The contents of the LastErrorText for the successful call to SignStringENC.
// 3. The HTTP session log file (i.e. c:/someDir/sessionLog.txt)
// 4. The responseBody.txt file.
End_Procedure