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(PowerBuilder) Create JPK VAT metadata XMLDemonstrates how to create the JPK VAT metadata XML (InitUpload) that will be signed using XADES.
integer li_rc integer li_Success oleobject loo_Xml oleobject loo_BdXml oleobject loo_Crypt oleobject loo_Zip oleobject e oleobject loo_BdZip oleobject loo_Prng oleobject loo_BdAesKey string ls_IvBytes oleobject loo_Cert oleobject loo_PubKey oleobject loo_Rsa string ls_FinalXml // 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> loo_Xml = create oleobject li_rc = loo_Xml.ConnectToNewObject("Chilkat_9_5_0.Xml") if li_rc < 0 then destroy loo_Xml MessageBox("Error","Connecting to COM object failed") return end if loo_Xml.Tag = "InitUpload" loo_Xml.AddAttribute("xmlns","http://e-dokumenty.mf.gov.pl") loo_Xml.UpdateChildContent("DocumentType","JPK") loo_Xml.UpdateChildContent("Version","01.02.01.20160617") loo_Xml.UpdateAttrAt("EncryptionKey",1,"algorithm","RSA") loo_Xml.UpdateAttrAt("EncryptionKey",1,"encoding","Base64") loo_Xml.UpdateAttrAt("EncryptionKey",1,"mode","ECB") loo_Xml.UpdateAttrAt("EncryptionKey",1,"padding","PKCS#1") loo_Xml.UpdateChildContent("EncryptionKey","TO BE DETERMINED") loo_Xml.UpdateAttrAt("DocumentList|Document|FormCode",1,"schemaVersion","1-1") loo_Xml.UpdateAttrAt("DocumentList|Document|FormCode",1,"systemCode","JPK_VAT (3)") loo_Xml.UpdateChildContent("DocumentList|Document|FormCode","JPK_VAT") loo_Xml.UpdateChildContent("DocumentList|Document|FileName","JPK_VAT_3_v1-1_20181201.xml") loo_Xml.UpdateChildContent("DocumentList|Document|ContentLength","9999") loo_Xml.UpdateAttrAt("DocumentList|Document|HashValue",1,"algorithm","SHA-256") loo_Xml.UpdateAttrAt("DocumentList|Document|HashValue",1,"encoding","Base64") loo_Xml.UpdateChildContent("DocumentList|Document|HashValue","TO BE DETERMINED") loo_Xml.UpdateAttrAt("DocumentList|Document|FileSignatureList",1,"filesNumber","1") loo_Xml.UpdateAttrAt("DocumentList|Document|FileSignatureList|Packaging|SplitZip",1,"mode","zip") loo_Xml.UpdateAttrAt("DocumentList|Document|FileSignatureList|Packaging|SplitZip",1,"type","split") loo_Xml.UpdateAttrAt("DocumentList|Document|FileSignatureList|Encryption|AES",1,"block","16") loo_Xml.UpdateAttrAt("DocumentList|Document|FileSignatureList|Encryption|AES",1,"mode","CBC") loo_Xml.UpdateAttrAt("DocumentList|Document|FileSignatureList|Encryption|AES",1,"padding","PKCS#7") loo_Xml.UpdateAttrAt("DocumentList|Document|FileSignatureList|Encryption|AES",1,"size","256") loo_Xml.UpdateAttrAt("DocumentList|Document|FileSignatureList|Encryption|AES|IV",1,"bytes","16") loo_Xml.UpdateAttrAt("DocumentList|Document|FileSignatureList|Encryption|AES|IV",1,"encoding","Base64") loo_Xml.UpdateChildContent("DocumentList|Document|FileSignatureList|Encryption|AES|IV","TO BE DETERMINED") loo_Xml.UpdateChildContent("DocumentList|Document|FileSignatureList|FileSignature|OrdinalNumber","1") loo_Xml.UpdateChildContent("DocumentList|Document|FileSignatureList|FileSignature|FileName","JPK_VAT_3_v1-1_20181201-000.xml.zip.aes") loo_Xml.UpdateChildContent("DocumentList|Document|FileSignatureList|FileSignature|ContentLength","9999") loo_Xml.UpdateAttrAt("DocumentList|Document|FileSignatureList|FileSignature|HashValue",1,"algorithm","MD5") loo_Xml.UpdateAttrAt("DocumentList|Document|FileSignatureList|FileSignature|HashValue",1,"encoding","Base64") loo_Xml.UpdateChildContent("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 loo_BdXml = create oleobject li_rc = loo_BdXml.ConnectToNewObject("Chilkat_9_5_0.BinData") li_Success = loo_BdXml.LoadFile("qa_data/xml_dsig/jpk_vat/JPK_VAT_3_v1-1_20181201-000.xml") if li_Success <> 1 then Write-Debug "Failed to load XML file." destroy loo_Xml destroy loo_BdXml return end if loo_Xml.UpdateChildContentInt("DocumentList|Document|ContentLength",loo_BdXml.NumBytes) loo_Crypt = create oleobject li_rc = loo_Crypt.ConnectToNewObject("Chilkat_9_5_0.Crypt2") loo_Crypt.HashAlgorithm = "sha256" loo_Crypt.EncodingMode = "base64" loo_Xml.UpdateChildContent("DocumentList|Document|HashValue",loo_Crypt.HashBdENC(loo_BdXml)) // ------------------------------------------------------------ // Step 2: Create a Zip archive containing the XML. loo_Zip = create oleobject li_rc = loo_Zip.ConnectToNewObject("Chilkat_9_5_0.Zip") // The filename we pass here doesn't matter because we won't actually be creating a .zip file. loo_Zip.NewZip("anything.zip") e = loo_Zip.AppendBd("JPK_VAT_3_v1-1_20181201-000.xml",loo_BdXml) destroy e // Write the .zip file to a BinData object. loo_BdZip = create oleobject li_rc = loo_BdZip.ConnectToNewObject("Chilkat_9_5_0.BinData") loo_Zip.WriteBd(loo_BdZip) // ------------------------------------------------------------ // Step 3: Generate a random 256-bit AES key (32-bytes) loo_Prng = create oleobject li_rc = loo_Prng.ConnectToNewObject("Chilkat_9_5_0.Prng") loo_BdAesKey = create oleobject li_rc = loo_BdAesKey.ConnectToNewObject("Chilkat_9_5_0.BinData") loo_Prng.GenRandomBd(32,loo_BdAesKey) ls_IvBytes = loo_Prng.GenRandom(16,"base64") // Store the IV (base64 string) in the XML. loo_Xml.UpdateChildContent("DocumentList|Document|FileSignatureList|Encryption|AES|IV",ls_IvBytes) // ------------------------------------------------------------ // Step 4: AES encrypt our zip archive (the contents of bdZip) loo_Crypt.CipherMode = "cbc" loo_Crypt.KeyLength = 256 loo_Crypt.CryptAlgorithm = "aes" loo_Crypt.PaddingScheme = 0 loo_Crypt.SetEncodedIV(ls_IvBytes,"base64") loo_Crypt.SetEncodedKey(loo_BdAesKey.GetEncoded("base64"),"base64") // AES by definition has a block size of 16. loo_Crypt.EncryptBd(loo_BdZip) // 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 li_Success = loo_BdZip.WriteFile("qa_output/JPK_VAT_3_v1-1_20181201-000.xml.zip.aes") loo_Xml.UpdateChildContentInt("DocumentList|Document|FileSignatureList|FileSignature|ContentLength",loo_BdZip.NumBytes) // ------------------------------------------------------------ // Step 4: RSA Encrypt the AES key using the public key certificate provided by the Ministry of Finance loo_Cert = create oleobject li_rc = loo_Cert.ConnectToNewObject("Chilkat_9_5_0.Cert") li_Success = loo_Cert.LoadFromFile("qa_data/pem/mf_public_rsa.pem") if li_Success <> 1 then Write-Debug loo_Cert.LastErrorText destroy loo_Xml destroy loo_BdXml destroy loo_Crypt destroy loo_Zip destroy loo_BdZip destroy loo_Prng destroy loo_BdAesKey destroy loo_Cert return end if loo_PubKey = loo_Cert.ExportPublicKey() loo_Rsa = create oleobject li_rc = loo_Rsa.ConnectToNewObject("Chilkat_9_5_0.Rsa") loo_Rsa.ImportPublicKeyObj(loo_PubKey) destroy loo_PubKey loo_Rsa.EncodingMode = "base64" loo_Rsa.LittleEndian = 0 // in-place RSA encrypt the contents of bdAesKey. loo_Rsa.EncryptBd(loo_BdAesKey,0) loo_Xml.UpdateChildContent("EncryptionKey",loo_BdAesKey.GetEncoded("base64")) // 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..) loo_Crypt.HashAlgorithm = "md5" loo_Xml.UpdateChildContent("DocumentList|Document|FileSignatureList|FileSignature|HashValue",loo_Crypt.HashBdENC(loo_BdZip)) // 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). ls_FinalXml = loo_Xml.GetXml() Write-Debug ls_FinalXml loo_Xml.SaveXml("qa_output/jpk_vat.xml") Write-Debug "Finished." destroy loo_Xml destroy loo_BdXml destroy loo_Crypt destroy loo_Zip destroy loo_BdZip destroy loo_Prng destroy loo_BdAesKey destroy loo_Cert destroy loo_Rsa |
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