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(DataFlex) Create JPK VAT metadata XMLDemonstrates how to create the JPK VAT metadata XML (InitUpload) that will be signed using XADES.
Use ChilkatAx-9.5.0-win32.pkg Procedure Test Boolean iSuccess Handle hoXml Variant vBdXml Handle hoBdXml Handle hoCrypt Handle hoZip Variant vE Handle hoE Variant vBdZip Handle hoBdZip Handle hoPrng Variant vBdAesKey Handle hoBdAesKey String sIvBytes Handle hoCert Variant vPubKey Handle hoPubKey Handle hoRsa String sFinalXml String sTemp1 Integer iTemp1 // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. // First build an InitUpload XML template // Use this online tool to generate the code from the sample XML below: // Generate Code to Create XML // <InitUpload xmlns="http://e-dokumenty.mf.gov.pl"> // <DocumentType>JPK</DocumentType> // <Version>01.02.01.20160617</Version> // <EncryptionKey algorithm="RSA" encoding="Base64" mode="ECB" padding="PKCS#1">F9EhKFec...uWqAWUIg==</EncryptionKey> // <DocumentList> // <Document> // <FormCode schemaVersion="1-1" systemCode="JPK_VAT (3)">JPK_VAT</FormCode> // <FileName>JPK_VAT_3_v1-1_20181201.xml</FileName> // <ContentLength>8736</ContentLength> // <HashValue algorithm="SHA-256" encoding="Base64">JFDI1pItwh6dj/Xe1uts/x61qnjZ4DLHpkZMhmf1oKQ=</HashValue> // <FileSignatureList filesNumber="1"> // <Packaging> // <SplitZip mode="zip" type="split"/> // </Packaging> // <Encryption> // <AES block="16" mode="CBC" padding="PKCS#7" size="256"> // <IV bytes="16" encoding="Base64">z64oN9zXHt1+S3XACRSCYw==</IV> // </AES> // </Encryption> // <FileSignature> // <OrdinalNumber>1</OrdinalNumber> // <FileName>JPK_VAT_3_v1-1_20181201-000.xml.zip.aes</FileName> // <ContentLength>16</ContentLength> // <HashValue algorithm="MD5" encoding="Base64">5NX0q1935fvMjLFV7E1yDw==</HashValue> // </FileSignature> // </FileSignatureList> // </Document> // </DocumentList> // </InitUpload> Get Create (RefClass(cComChilkatXml)) To hoXml If (Not(IsComObjectCreated(hoXml))) Begin Send CreateComObject of hoXml End Set ComTag Of hoXml To "InitUpload" Get ComAddAttribute Of hoXml "xmlns" "http://e-dokumenty.mf.gov.pl" To iSuccess Send ComUpdateChildContent To hoXml "DocumentType" "JPK" Send ComUpdateChildContent To hoXml "Version" "01.02.01.20160617" Get ComUpdateAttrAt Of hoXml "EncryptionKey" True "algorithm" "RSA" To iSuccess Get ComUpdateAttrAt Of hoXml "EncryptionKey" True "encoding" "Base64" To iSuccess Get ComUpdateAttrAt Of hoXml "EncryptionKey" True "mode" "ECB" To iSuccess Get ComUpdateAttrAt Of hoXml "EncryptionKey" True "padding" "PKCS#1" To iSuccess Send ComUpdateChildContent To hoXml "EncryptionKey" "TO BE DETERMINED" Get ComUpdateAttrAt Of hoXml "DocumentList|Document|FormCode" True "schemaVersion" "1-1" To iSuccess Get ComUpdateAttrAt Of hoXml "DocumentList|Document|FormCode" True "systemCode" "JPK_VAT (3)" To iSuccess Send ComUpdateChildContent To hoXml "DocumentList|Document|FormCode" "JPK_VAT" Send ComUpdateChildContent To hoXml "DocumentList|Document|FileName" "JPK_VAT_3_v1-1_20181201.xml" Send ComUpdateChildContent To hoXml "DocumentList|Document|ContentLength" "9999" Get ComUpdateAttrAt Of hoXml "DocumentList|Document|HashValue" True "algorithm" "SHA-256" To iSuccess Get ComUpdateAttrAt Of hoXml "DocumentList|Document|HashValue" True "encoding" "Base64" To iSuccess Send ComUpdateChildContent To hoXml "DocumentList|Document|HashValue" "TO BE DETERMINED" Get ComUpdateAttrAt Of hoXml "DocumentList|Document|FileSignatureList" True "filesNumber" "1" To iSuccess Get ComUpdateAttrAt Of hoXml "DocumentList|Document|FileSignatureList|Packaging|SplitZip" True "mode" "zip" To iSuccess Get ComUpdateAttrAt Of hoXml "DocumentList|Document|FileSignatureList|Packaging|SplitZip" True "type" "split" To iSuccess Get ComUpdateAttrAt Of hoXml "DocumentList|Document|FileSignatureList|Encryption|AES" True "block" "16" To iSuccess Get ComUpdateAttrAt Of hoXml "DocumentList|Document|FileSignatureList|Encryption|AES" True "mode" "CBC" To iSuccess Get ComUpdateAttrAt Of hoXml "DocumentList|Document|FileSignatureList|Encryption|AES" True "padding" "PKCS#7" To iSuccess Get ComUpdateAttrAt Of hoXml "DocumentList|Document|FileSignatureList|Encryption|AES" True "size" "256" To iSuccess Get ComUpdateAttrAt Of hoXml "DocumentList|Document|FileSignatureList|Encryption|AES|IV" True "bytes" "16" To iSuccess Get ComUpdateAttrAt Of hoXml "DocumentList|Document|FileSignatureList|Encryption|AES|IV" True "encoding" "Base64" To iSuccess Send ComUpdateChildContent To hoXml "DocumentList|Document|FileSignatureList|Encryption|AES|IV" "TO BE DETERMINED" Send ComUpdateChildContent To hoXml "DocumentList|Document|FileSignatureList|FileSignature|OrdinalNumber" "1" Send ComUpdateChildContent To hoXml "DocumentList|Document|FileSignatureList|FileSignature|FileName" "JPK_VAT_3_v1-1_20181201-000.xml.zip.aes" Send ComUpdateChildContent To hoXml "DocumentList|Document|FileSignatureList|FileSignature|ContentLength" "9999" Get ComUpdateAttrAt Of hoXml "DocumentList|Document|FileSignatureList|FileSignature|HashValue" True "algorithm" "MD5" To iSuccess Get ComUpdateAttrAt Of hoXml "DocumentList|Document|FileSignatureList|FileSignature|HashValue" True "encoding" "Base64" To iSuccess Send ComUpdateChildContent To hoXml "DocumentList|Document|FileSignatureList|FileSignature|HashValue" "TO BE DETERMINED" // ------------------------------------------------------------ // Step 1: Load our JPK_VAT XML and update the DocumentList|Document|HashValue // and DocumentList|Document|ContentLength Get Create (RefClass(cComChilkatBinData)) To hoBdXml If (Not(IsComObjectCreated(hoBdXml))) Begin Send CreateComObject of hoBdXml End Get ComLoadFile Of hoBdXml "qa_data/xml_dsig/jpk_vat/JPK_VAT_3_v1-1_20181201-000.xml" To iSuccess If (iSuccess <> True) Begin Showln "Failed to load XML file." Procedure_Return End Get ComNumBytes Of hoBdXml To iTemp1 Send ComUpdateChildContentInt To hoXml "DocumentList|Document|ContentLength" iTemp1 Get Create (RefClass(cComChilkatCrypt2)) To hoCrypt If (Not(IsComObjectCreated(hoCrypt))) Begin Send CreateComObject of hoCrypt End Set ComHashAlgorithm Of hoCrypt To "sha256" Set ComEncodingMode Of hoCrypt To "base64" Get ComHashBdENC Of hoCrypt Get pvComObject of hoBdXml to vBdXml vBdXml To sTemp1 Send ComUpdateChildContent To hoXml "DocumentList|Document|HashValue" sTemp1 // ------------------------------------------------------------ // Step 2: Create a Zip archive containing the XML. Get Create (RefClass(cComChilkatZip)) To hoZip If (Not(IsComObjectCreated(hoZip))) Begin Send CreateComObject of hoZip End // The filename we pass here doesn't matter because we won't actually be creating a .zip file. Get ComNewZip Of hoZip "anything.zip" To iSuccess Get pvComObject of hoBdXml to vBdXml Get ComAppendBd Of hoZip "JPK_VAT_3_v1-1_20181201-000.xml" vBdXml To vE If (IsComObject(vE)) Begin Get Create (RefClass(cComChilkatZipEntry)) To hoE Set pvComObject Of hoE To vE End Send Destroy of e // Write the .zip file to a BinData object. Get Create (RefClass(cComChilkatBinData)) To hoBdZip If (Not(IsComObjectCreated(hoBdZip))) Begin Send CreateComObject of hoBdZip End Get pvComObject of hoBdZip to vBdZip Get ComWriteBd Of hoZip vBdZip To iSuccess // ------------------------------------------------------------ // Step 3: Generate a random 256-bit AES key (32-bytes) Get Create (RefClass(cComChilkatPrng)) To hoPrng If (Not(IsComObjectCreated(hoPrng))) Begin Send CreateComObject of hoPrng End Get Create (RefClass(cComChilkatBinData)) To hoBdAesKey If (Not(IsComObjectCreated(hoBdAesKey))) Begin Send CreateComObject of hoBdAesKey End Get pvComObject of hoBdAesKey to vBdAesKey Get ComGenRandomBd Of hoPrng 32 vBdAesKey To iSuccess Get ComGenRandom Of hoPrng 16 "base64" To sIvBytes // Store the IV (base64 string) in the XML. Send ComUpdateChildContent To hoXml "DocumentList|Document|FileSignatureList|Encryption|AES|IV" sIvBytes // ------------------------------------------------------------ // Step 4: AES encrypt our zip archive (the contents of bdZip) Set ComCipherMode Of hoCrypt To "cbc" Set ComKeyLength Of hoCrypt To 256 Set ComCryptAlgorithm Of hoCrypt To "aes" Set ComPaddingScheme Of hoCrypt To 0 Send ComSetEncodedIV To hoCrypt sIvBytes "base64" Get ComGetEncoded Of hoBdAesKey "base64" To sTemp1 Send ComSetEncodedKey To hoCrypt sTemp1 "base64" // AES by definition has a block size of 16. Get pvComObject of hoBdZip to vBdZip Get ComEncryptBd Of hoCrypt vBdZip To iSuccess // bdZip now contains the AES encrypted data. // Note: This is NOT the same as a zip where the contents are AES encrypted. // In that case, we have an unencrypted zip structure with AES encrypted files within. // In our case, the entire zip file image is encrypted. // Save the bdZip to a file. This is what will get sent to e-dokumenty.mf.gov.pl Get ComWriteFile Of hoBdZip "qa_output/JPK_VAT_3_v1-1_20181201-000.xml.zip.aes" To iSuccess Get ComNumBytes Of hoBdZip To iTemp1 Send ComUpdateChildContentInt To hoXml "DocumentList|Document|FileSignatureList|FileSignature|ContentLength" iTemp1 // ------------------------------------------------------------ // Step 4: RSA Encrypt the AES key using the public key certificate provided by the Ministry of Finance Get Create (RefClass(cComChilkatCert)) To hoCert If (Not(IsComObjectCreated(hoCert))) Begin Send CreateComObject of hoCert End Get ComLoadFromFile Of hoCert "qa_data/pem/mf_public_rsa.pem" To iSuccess If (iSuccess <> True) Begin Get ComLastErrorText Of hoCert To sTemp1 Showln sTemp1 Procedure_Return End Get ComExportPublicKey Of hoCert To vPubKey If (IsComObject(vPubKey)) Begin Get Create (RefClass(cComChilkatPublicKey)) To hoPubKey Set pvComObject Of hoPubKey To vPubKey End Get Create (RefClass(cComChilkatRsa)) To hoRsa If (Not(IsComObjectCreated(hoRsa))) Begin Send CreateComObject of hoRsa End Get ComImportPublicKeyObj Of hoRsa vPubKey To iSuccess Send Destroy of hoPubKey Set ComEncodingMode Of hoRsa To "base64" Set ComLittleEndian Of hoRsa To False // in-place RSA encrypt the contents of bdAesKey. Get pvComObject of hoBdAesKey to vBdAesKey Get ComEncryptBd Of hoRsa vBdAesKey False To iSuccess Get ComGetEncoded Of hoBdAesKey "base64" To sTemp1 Send ComUpdateChildContent To hoXml "EncryptionKey" sTemp1 // Step 5: We forgot to get the MD5 hash of the AES encrypted zip. // (I'm assuming we need the MD5 of the encrypted zip as opposed to the MD5 of the pre-encrypted zip..) Set ComHashAlgorithm Of hoCrypt To "md5" Get ComHashBdENC Of hoCrypt Get pvComObject of hoBdZip to vBdZip vBdZip To sTemp1 Send ComUpdateChildContent To hoXml "DocumentList|Document|FileSignatureList|FileSignature|HashValue" sTemp1 // At this point, the XML is prepared and the AES encrypted image of the zip file is written // to a file (and also in bdZip). Get ComGetXml Of hoXml To sFinalXml Showln sFinalXml Get ComSaveXml Of hoXml "qa_output/jpk_vat.xml" To iSuccess Showln "Finished." End_Procedure |
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