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(Unicode C) Signed Zip as Base64 with XAdES-BESThis example is to help companies implement a solution for sending XAdES-BES to the Polish government for reporting purposes. Specifically: Przed podpisaniem deklaracja zbiorcza (PIT-11Z, PIT-8CZ, PIT-40Z, PIT-RZ) musi zostać The example demonstrates the following:
This example will also show the reverse:
#include <C_CkStringBuilderW.h> #include <C_CkZipW.h> #include <C_CkZipEntryW.h> #include <C_CkBinDataW.h> #include <C_CkXmlDSigGenW.h> #include <C_CkXmlW.h> #include <C_CkCertW.h> #include <C_CkXmlDSigW.h> void ChilkatSample(void) { HCkStringBuilderW sbXmlToZip; BOOL success; HCkZipW zip; HCkZipEntryW entry; HCkBinDataW bdZip; HCkXmlDSigGenW gen; HCkXmlW object1; HCkCertW cert; HCkStringBuilderW sbXml; HCkXmlDSigW verifier; BOOL verified; HCkXmlW xml; const wchar_t *strZipBase64; const wchar_t *origXml; // This example assumes the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. // Zip the PIT-11Z.xml to create PIT-11Z.zip (not as a .zip file, but in-memory). sbXmlToZip = CkStringBuilderW_Create(); success = CkStringBuilderW_LoadFile(sbXmlToZip,L"qa_data/xml/PIT-11Z.xml",L"utf-8"); if (success != TRUE) { wprintf(L"Failed to load the XML to be zipped.\n"); CkStringBuilderW_Dispose(sbXmlToZip); return; } zip = CkZipW_Create(); // Initialize the zip object. No file is created in this call. // It should always return TRUE. success = CkZipW_NewZip(zip,L"PIT-11Z.zip"); // Add the XML to be zipped. entry = CkZipW_AppendString(zip,L"PIT-11Z.xml",CkStringBuilderW_getAsString(sbXmlToZip)); CkZipEntryW_Dispose(entry); // Write the zip to a BinData object. bdZip = CkBinDataW_Create(); CkZipW_WriteBd(zip,bdZip); // The contents of the bdZip will be retrieved in base64 format when needed below.. gen = CkXmlDSigGenW_Create(); CkXmlDSigGenW_putSigLocation(gen,L""); CkXmlDSigGenW_putSigLocationMod(gen,0); CkXmlDSigGenW_putSigId(gen,L"Signature_2a8df7f8-b958-40cc-83f6-edb53b837347_19"); CkXmlDSigGenW_putSigNamespacePrefix(gen,L"ds"); CkXmlDSigGenW_putSigNamespaceUri(gen,L"http://www.w3.org/2000/09/xmldsig#"); CkXmlDSigGenW_putSigValueId(gen,L"SignatureValue_2a8df7f8-b958-40cc-83f6-edb53b837347_52"); CkXmlDSigGenW_putSignedInfoId(gen,L"SignedInfo_2a8df7f8-b958-40cc-83f6-edb53b837347_41"); CkXmlDSigGenW_putSignedInfoCanonAlg(gen,L"C14N"); CkXmlDSigGenW_putSignedInfoDigestMethod(gen,L"sha1"); // Set the KeyInfoId before adding references.. CkXmlDSigGenW_putKeyInfoId(gen,L"KeyInfo_2a8df7f8-b958-40cc-83f6-edb53b837347_24"); // Create an Object to be added to the Signature. object1 = CkXmlW_Create(); CkXmlW_putTag(object1,L"xades:QualifyingProperties"); CkXmlW_AddAttribute(object1,L"xmlns:xades",L"http://uri.etsi.org/01903/v1.3.2#"); CkXmlW_AddAttribute(object1,L"Id",L"QualifyingProperties_2a8df7f8-b958-40cc-83f6-edb53b837347_43"); CkXmlW_AddAttribute(object1,L"Target",L"#Signature_2a8df7f8-b958-40cc-83f6-edb53b837347_19"); CkXmlW_UpdateAttrAt(object1,L"xades:SignedProperties",TRUE,L"Id",L"SignedProperties_2a8df7f8-b958-40cc-83f6-edb53b837347_4e"); CkXmlW_UpdateAttrAt(object1,L"xades:SignedProperties|xades:SignedSignatureProperties",TRUE,L"Id",L"SignedSignatureProperties_2a8df7f8-b958-40cc-83f6-edb53b837347_0a"); // Chilkat will replace the strings "TO BE GENERATED BY CHILKAT" with actual values when the signature is created. CkXmlW_UpdateChildContent(object1,L"xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningTime",L"TO BE GENERATED BY CHILKAT"); // Note: It may be that http://www.w3.org/2001/04/xmlenc#sha256 is needed in the following line instead of http://www.w3.org/2000/09/xmldsig#sha1 CkXmlW_UpdateAttrAt(object1,L"xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert|xades:CertDigest|ds:DigestMethod",TRUE,L"Algorithm",L"http://www.w3.org/2000/09/xmldsig#sha1"); CkXmlW_UpdateChildContent(object1,L"xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert|xades:CertDigest|ds:DigestValue",L"TO BE GENERATED BY CHILKAT"); CkXmlW_UpdateChildContent(object1,L"xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert|xades:IssuerSerial|ds:X509IssuerName",L"TO BE GENERATED BY CHILKAT"); CkXmlW_UpdateChildContent(object1,L"xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert|xades:IssuerSerial|ds:X509SerialNumber",L"TO BE GENERATED BY CHILKAT"); CkXmlW_UpdateAttrAt(object1,L"xades:SignedProperties|xades:SignedDataObjectProperties",TRUE,L"Id",L"SignedDataObjectProperties_2a8df7f8-b958-40cc-83f6-edb53b837347_4b"); CkXmlW_UpdateAttrAt(object1,L"xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat",TRUE,L"ObjectReference",L"#Reference1_2a8df7f8-b958-40cc-83f6-edb53b837347_27"); CkXmlW_UpdateChildContent(object1,L"xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:Description",L"MIME-Version: 1.0\r\nContent-Type: application/zip\r\nContent-Transfer-Encoding: binary\r\nContent-Disposition: filename="PIT-11Z.zip""); CkXmlW_UpdateAttrAt(object1,L"xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:ObjectIdentifier|xades:Identifier",TRUE,L"Qualifier",L"OIDAsURI"); CkXmlW_UpdateChildContent(object1,L"xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:ObjectIdentifier|xades:Identifier",L"http://www.certum.pl/OIDAsURI/signedFile/1.2.616.1.113527.3.1.1.3.1"); CkXmlW_UpdateChildContent(object1,L"xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:ObjectIdentifier|xades:Description",L"Opis formatu dokumentu oraz jego pelna nazwa"); CkXmlW_UpdateChildContent(object1,L"xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:ObjectIdentifier|xades:DocumentationReferences|xades:DocumentationReference",L"http://www.certum.pl/OIDAsURI/signedFile.pdf"); CkXmlW_UpdateChildContent(object1,L"xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:MimeType",L"application/zip"); CkXmlW_UpdateChildContent(object1,L"xades:SignedProperties|xades:SignedDataObjectProperties|xades:CommitmentTypeIndication|xades:CommitmentTypeId|xades:Identifier",L"http://uri.etsi.org/01903/v1.2.2#ProofOfApproval"); CkXmlW_UpdateChildContent(object1,L"xades:SignedProperties|xades:SignedDataObjectProperties|xades:CommitmentTypeIndication|xades:AllSignedDataObjects",L""); CkXmlW_UpdateAttrAt(object1,L"xades:UnsignedProperties",TRUE,L"Id",L"UnsignedProperties_2a8df7f8-b958-40cc-83f6-edb53b837347_55"); // Emit XML in compact (single-line) format to avoid whitespace problems. CkXmlW_putEmitCompact(object1,TRUE); CkXmlDSigGenW_AddObject(gen,L"",CkXmlW_getXml(object1),L"",L""); // Create an Object to be added to the Signature. // This is where we add the base64 representation of the PIT-11Z.zip CkXmlDSigGenW_AddObject(gen,L"Object1_2a8df7f8-b958-40cc-83f6-edb53b837347",CkBinDataW_getEncoded(bdZip,L"base64"),L"",L"http://www.w3.org/2000/09/xmldsig#base64"); // -------- Reference 1 -------- CkXmlDSigGenW_AddObjectRef(gen,L"Object1_2a8df7f8-b958-40cc-83f6-edb53b837347",L"sha1",L"C14N_WithComments",L"",L""); CkXmlDSigGenW_SetRefIdAttr(gen,L"Object1_2a8df7f8-b958-40cc-83f6-edb53b837347",L"Reference1_2a8df7f8-b958-40cc-83f6-edb53b837347_27"); // -------- Reference 2 -------- CkXmlDSigGenW_AddObjectRef(gen,L"SignedProperties_2a8df7f8-b958-40cc-83f6-edb53b837347_4e",L"sha1",L"",L"",L"http://uri.etsi.org/01903#SignedProperties"); CkXmlDSigGenW_SetRefIdAttr(gen,L"SignedProperties_2a8df7f8-b958-40cc-83f6-edb53b837347_4e",L"SignedProperties-Reference_2a8df7f8-b958-40cc-83f6-edb53b837347_28"); // Provide a certificate + private key. (PFX password is test123) cert = CkCertW_Create(); success = CkCertW_LoadPfxFile(cert,L"qa_data/pfx/cert_test123.pfx",L"test123"); if (success != TRUE) { wprintf(L"%s\n",CkCertW_lastErrorText(cert)); CkStringBuilderW_Dispose(sbXmlToZip); CkZipW_Dispose(zip); CkBinDataW_Dispose(bdZip); CkXmlDSigGenW_Dispose(gen); CkXmlW_Dispose(object1); CkCertW_Dispose(cert); return; } CkXmlDSigGenW_SetX509Cert(gen,cert,TRUE); CkXmlDSigGenW_putKeyInfoType(gen,L"X509Data"); CkXmlDSigGenW_putX509Type(gen,L"Certificate"); // This will be an enveloping signature where the Signature element // is the XML document root, the signed data is contained within Object // tag(s) within the Signature. // Therefore, pass an empty sbXml to CreateXmlDsigSb. sbXml = CkStringBuilderW_Create(); // The Polish government's XmlDSig implementation requires that we reproduce an attribute-sorting error. // (This is an error in the XML canonicalization that is not noticed when both the signature-creation code and signature-verification code use // the same XML canonicalization implementation w/ the bug.) CkXmlDSigGenW_putBehaviors(gen,L"AttributeSortingBug,CompactSignedXml"); // Sign the XML... success = CkXmlDSigGenW_CreateXmlDSigSb(gen,sbXml); if (success != TRUE) { wprintf(L"%s\n",CkXmlDSigGenW_lastErrorText(gen)); CkStringBuilderW_Dispose(sbXmlToZip); CkZipW_Dispose(zip); CkBinDataW_Dispose(bdZip); CkXmlDSigGenW_Dispose(gen); CkXmlW_Dispose(object1); CkCertW_Dispose(cert); CkStringBuilderW_Dispose(sbXml); return; } // ----------------------------------------------- // Save the signed XML to a file. success = CkStringBuilderW_WriteFile(sbXml,L"qa_output/signedXml.xml",L"utf-8",FALSE); wprintf(L"%s\n",CkStringBuilderW_getAsString(sbXml)); // ---------------------------------------- // Verify the signature we just produced... verifier = CkXmlDSigW_Create(); success = CkXmlDSigW_LoadSignatureSb(verifier,sbXml); if (success != TRUE) { wprintf(L"%s\n",CkXmlDSigW_lastErrorText(verifier)); CkStringBuilderW_Dispose(sbXmlToZip); CkZipW_Dispose(zip); CkBinDataW_Dispose(bdZip); CkXmlDSigGenW_Dispose(gen); CkXmlW_Dispose(object1); CkCertW_Dispose(cert); CkStringBuilderW_Dispose(sbXml); CkXmlDSigW_Dispose(verifier); return; } verified = CkXmlDSigW_VerifySignature(verifier,TRUE); if (verified != TRUE) { wprintf(L"%s\n",CkXmlDSigW_lastErrorText(verifier)); CkStringBuilderW_Dispose(sbXmlToZip); CkZipW_Dispose(zip); CkBinDataW_Dispose(bdZip); CkXmlDSigGenW_Dispose(gen); CkXmlW_Dispose(object1); CkCertW_Dispose(cert); CkStringBuilderW_Dispose(sbXml); CkXmlDSigW_Dispose(verifier); return; } wprintf(L"This signature was successfully verified.\n"); // ------------------------------------ // Finally, let's extract the .zip from the signed XML, and then unzip the original PIT-11Z.xml from the in-memory zip. xml = CkXmlW_Create(); CkXmlW_LoadSb(xml,sbXml,TRUE); // The base64 image of the PIT-11Z.zip is in the 2nd ds:Object child of the ds:Signature (the ds:Signature is the root element of the signed XML). // (ds:Object[0] would be the 1st ds:Object child. Index 1 is the 2nd ds:Object child.) strZipBase64 = CkXmlW_getChildContent(xml,L"ds:Object[1]"); CkBinDataW_Clear(bdZip); CkBinDataW_AppendEncoded(bdZip,strZipBase64,L"base64"); if (CkBinDataW_getNumBytes(bdZip) == 0) { wprintf(L"Something went wrong.. we dont' have any data..\n"); CkStringBuilderW_Dispose(sbXmlToZip); CkZipW_Dispose(zip); CkBinDataW_Dispose(bdZip); CkXmlDSigGenW_Dispose(gen); CkXmlW_Dispose(object1); CkCertW_Dispose(cert); CkStringBuilderW_Dispose(sbXml); CkXmlDSigW_Dispose(verifier); CkXmlW_Dispose(xml); return; } success = CkZipW_OpenBd(zip,bdZip); if (success != TRUE) { wprintf(L"%s\n",CkZipW_lastErrorText(zip)); CkStringBuilderW_Dispose(sbXmlToZip); CkZipW_Dispose(zip); CkBinDataW_Dispose(bdZip); CkXmlDSigGenW_Dispose(gen); CkXmlW_Dispose(object1); CkCertW_Dispose(cert); CkStringBuilderW_Dispose(sbXml); CkXmlDSigW_Dispose(verifier); CkXmlW_Dispose(xml); return; } // Get the 1st file in the zip, which should be the PIT-11Z.xml entry = CkZipW_GetEntryByIndex(zip,0); if (CkZipW_getLastMethodSuccess(zip) != TRUE) { wprintf(L"Zip contains no files...\n"); CkStringBuilderW_Dispose(sbXmlToZip); CkZipW_Dispose(zip); CkBinDataW_Dispose(bdZip); CkXmlDSigGenW_Dispose(gen); CkXmlW_Dispose(object1); CkCertW_Dispose(cert); CkStringBuilderW_Dispose(sbXml); CkXmlDSigW_Dispose(verifier); CkXmlW_Dispose(xml); return; } // Get the XML: origXml = CkZipEntryW_unzipToString(entry,0,L"utf-8"); wprintf(L"Original XML extracted from base64 zip:\n"); wprintf(L"%s\n",origXml); CkZipEntryW_Dispose(entry); CkStringBuilderW_Dispose(sbXmlToZip); CkZipW_Dispose(zip); CkBinDataW_Dispose(bdZip); CkXmlDSigGenW_Dispose(gen); CkXmlW_Dispose(object1); CkCertW_Dispose(cert); CkStringBuilderW_Dispose(sbXml); CkXmlDSigW_Dispose(verifier); CkXmlW_Dispose(xml); } |
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