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(Unicode C) XML Signature Multiple External ReferencesDemonstrates how to add multiple external references to an XML digital signature.
#include <C_CkXmlDSigGenW.h> #include <C_CkXmlW.h> #include <C_CkHttpW.h> #include <C_CkBinDataW.h> #include <C_CkCertW.h> #include <C_CkStringBuilderW.h> #include <C_CkXmlDSigW.h> void ChilkatSample(void) { BOOL success; HCkXmlDSigGenW gen; HCkXmlW object1; HCkHttpW http; HCkBinDataW bd; const wchar_t *url; HCkCertW cert; HCkStringBuilderW sbXml; HCkXmlDSigW verifier; BOOL verified; // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. // This example creates the following signed XML with multiple external references: // <?xml version="1.0" encoding="UTF-8"?> // <ds:Signature xmlns:ds="http://www.w3.org/2000/09/xmldsig#" Id="xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4"> // <ds:SignedInfo> // <ds:CanonicalizationMethod Algorithm="http://www.w3.org/TR/2001/REC-xml-c14n-20010315"/> // <ds:SignatureMethod Algorithm="http://www.w3.org/2001/04/xmldsig-more#rsa-sha256"/> // <ds:Reference Id="xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4-ref0" URI="https://isus.ezdrowie.gov.pl/fhir/Patient/123/_history/456"> // <ds:DigestMethod Algorithm="http://www.w3.org/2001/04/xmlenc#sha256"/> // <ds:DigestValue>...</ds:DigestValue> // </ds:Reference> // <ds:Reference Id="xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4-ref1" URI="https://isus.ezdrowie.gov.pl/fhir/Encounter/124/_history/22"> // <ds:DigestMethod Algorithm="http://www.w3.org/2001/04/xmlenc#sha256"/> // <ds:DigestValue>...</ds:DigestValue> // </ds:Reference> // <ds:Reference Id="xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4-ref2" URI="https://isus.ezdrowie.gov.pl/fhir/Condition/125/_history/1"> // <ds:DigestMethod Algorithm="http://www.w3.org/2001/04/xmlenc#sha256"/> // <ds:DigestValue>...</ds:DigestValue> // </ds:Reference> // <ds:Reference Id="xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4-ref3" URI="https://isus.ezdrowie.gov.pl/fhir/Procedure/126/_history/1"> // <ds:DigestMethod Algorithm="http://www.w3.org/2001/04/xmlenc#sha256"/> // <ds:DigestValue>...</ds:DigestValue> // </ds:Reference> // <ds:Reference Type="http://uri.etsi.org/01903#SignedProperties" URI="#xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4-signedprops"> // <ds:Transforms> // <ds:Transform Algorithm="http://www.w3.org/TR/2001/REC-xml-c14n-20010315"/> // </ds:Transforms> // <ds:DigestMethod Algorithm="http://www.w3.org/2001/04/xmlenc#sha256"/> // <ds:DigestValue>...</ds:DigestValue> // </ds:Reference> // </ds:SignedInfo> // <ds:SignatureValue Id="xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4-sigvalue">...</ds:SignatureValue> // <ds:KeyInfo> // <ds:X509Data> // <ds:X509Certificate>...</ds:X509Certificate> // <ds:X509SubjectName>...</ds:X509SubjectName> // <ds:X509IssuerSerial> // <ds:X509IssuerName>...</ds:X509IssuerName> // <ds:X509SerialNumber>...</ds:X509SerialNumber> // </ds:X509IssuerSerial> // </ds:X509Data> // </ds:KeyInfo> // <ds:Object> // <xades:QualifyingProperties xmlns:xades="http://uri.etsi.org/01903/v1.3.2#" xmlns:xades141="http://uri.etsi.org/01903/v1.4.1#" Target="#xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4"> // <xades:SignedProperties Id="xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4-signedprops"> // <xades:SignedSignatureProperties> // <xades:SigningTime>2021-06-02T07:10:13.306+02:00</xades:SigningTime> // <xades:SigningCertificate> // <xades:Cert> // <xades:CertDigest> // <ds:DigestMethod Algorithm="http://www.w3.org/2001/04/xmlenc#sha256"/> // <ds:DigestValue>...</ds:DigestValue> // </xades:CertDigest> // <xades:IssuerSerial> // <ds:X509IssuerName>...</ds:X509IssuerName> // <ds:X509SerialNumber>...</ds:X509SerialNumber> // </xades:IssuerSerial> // </xades:Cert> // <xades:Cert> // <xades:CertDigest> // <ds:DigestMethod Algorithm="http://www.w3.org/2001/04/xmlenc#sha256"/> // <ds:DigestValue>...</ds:DigestValue> // </xades:CertDigest> // <xades:IssuerSerial> // <ds:X509IssuerName>...</ds:X509IssuerName> // <ds:X509SerialNumber>...</ds:X509SerialNumber> // </xades:IssuerSerial> // </xades:Cert> // <xades:Cert> // <xades:CertDigest> // <ds:DigestMethod Algorithm="http://www.w3.org/2001/04/xmlenc#sha256"/> // <ds:DigestValue>...</ds:DigestValue> // </xades:CertDigest> // <xades:IssuerSerial> // <ds:X509IssuerName>...</ds:X509IssuerName> // <ds:X509SerialNumber>...</ds:X509SerialNumber> // </xades:IssuerSerial> // </xades:Cert> // </xades:SigningCertificate> // </xades:SignedSignatureProperties> // </xades:SignedProperties> // </xades:QualifyingProperties> // </ds:Object> // </ds:Signature> // success = TRUE; gen = CkXmlDSigGenW_Create(); CkXmlDSigGenW_putSigLocation(gen,L""); CkXmlDSigGenW_putSigLocationMod(gen,0); // Note: ID's simply need to be unique values in the signed XML document. They don't necessarily need to be GUID/UUID formatted. CkXmlDSigGenW_putSigId(gen,L"xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4"); CkXmlDSigGenW_putSigNamespacePrefix(gen,L"ds"); CkXmlDSigGenW_putSigNamespaceUri(gen,L"http://www.w3.org/2000/09/xmldsig#"); CkXmlDSigGenW_putSigValueId(gen,L"xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4-sigvalue"); CkXmlDSigGenW_putSignedInfoCanonAlg(gen,L"C14N"); CkXmlDSigGenW_putSignedInfoDigestMethod(gen,L"sha256"); // 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"xmlns:xades141",L"http://uri.etsi.org/01903/v1.4.1#"); CkXmlW_AddAttribute(object1,L"Target",L"#xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4"); CkXmlW_UpdateAttrAt(object1,L"xades:SignedProperties",TRUE,L"Id",L"xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4-signedprops"); CkXmlW_UpdateChildContent(object1,L"xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningTime",L"TO BE GENERATED BY CHILKAT"); // This assumes there are 3 certs in the certificate chain: The signing certificate, an intermediate root, and the root CA. // Remove the lines with "Cert[2]" if there is no intermediate root... CkXmlW_UpdateAttrAt(object1,L"xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert|xades:CertDigest|ds:DigestMethod",TRUE,L"Algorithm",L"http://www.w3.org/2001/04/xmlenc#sha256"); 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:SignedSignatureProperties|xades:SigningCertificate|xades:Cert[1]|xades:CertDigest|ds:DigestMethod",TRUE,L"Algorithm",L"http://www.w3.org/2001/04/xmlenc#sha256"); CkXmlW_UpdateChildContent(object1,L"xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert[1]|xades:CertDigest|ds:DigestValue",L"TO BE GENERATED BY CHILKAT"); CkXmlW_UpdateChildContent(object1,L"xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert[1]|xades:IssuerSerial|ds:X509IssuerName",L"TO BE GENERATED BY CHILKAT"); CkXmlW_UpdateChildContent(object1,L"xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert[1]|xades:IssuerSerial|ds:X509SerialNumber",L"TO BE GENERATED BY CHILKAT"); CkXmlW_UpdateAttrAt(object1,L"xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert[2]|xades:CertDigest|ds:DigestMethod",TRUE,L"Algorithm",L"http://www.w3.org/2001/04/xmlenc#sha256"); CkXmlW_UpdateChildContent(object1,L"xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert[2]|xades:CertDigest|ds:DigestValue",L"TO BE GENERATED BY CHILKAT"); CkXmlW_UpdateChildContent(object1,L"xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert[2]|xades:IssuerSerial|ds:X509IssuerName",L"TO BE GENERATED BY CHILKAT"); CkXmlW_UpdateChildContent(object1,L"xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert[2]|xades:IssuerSerial|ds:X509SerialNumber",L"TO BE GENERATED BY CHILKAT"); CkXmlDSigGenW_AddObject(gen,L"",CkXmlW_getXml(object1),L"",L""); http = CkHttpW_Create(); bd = CkBinDataW_Create(); url = L"https://isus.ezdrowie.gov.pl/fhir/Patient/123/_history/456"; success = CkHttpW_QuickGetBd(http,url,bd); if (success != TRUE) { wprintf(L"%s\n",CkHttpW_lastErrorText(http)); CkXmlDSigGenW_Dispose(gen); CkXmlW_Dispose(object1); CkHttpW_Dispose(http); CkBinDataW_Dispose(bd); return; } // -------- Reference 1 -------- CkXmlDSigGenW_AddExternalBinaryRef(gen,url,bd,L"sha256",L""); CkXmlDSigGenW_SetRefIdAttr(gen,url,L"xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4-ref0"); // -------- Reference 2 -------- CkBinDataW_Clear(bd); url = L"https://isus.ezdrowie.gov.pl/fhir/Encounter/789/_history/1"; success = CkHttpW_QuickGetBd(http,url,bd); if (success != TRUE) { wprintf(L"%s\n",CkHttpW_lastErrorText(http)); CkXmlDSigGenW_Dispose(gen); CkXmlW_Dispose(object1); CkHttpW_Dispose(http); CkBinDataW_Dispose(bd); return; } CkXmlDSigGenW_AddExternalBinaryRef(gen,url,bd,L"sha256",L""); CkXmlDSigGenW_SetRefIdAttr(gen,url,L"xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4-ref1"); // -------- Reference 3 -------- CkBinDataW_Clear(bd); url = L"https://isus.ezdrowie.gov.pl/fhir/Condition/123456/_history/1"; success = CkHttpW_QuickGetBd(http,url,bd); if (success != TRUE) { wprintf(L"%s\n",CkHttpW_lastErrorText(http)); CkXmlDSigGenW_Dispose(gen); CkXmlW_Dispose(object1); CkHttpW_Dispose(http); CkBinDataW_Dispose(bd); return; } CkXmlDSigGenW_AddExternalBinaryRef(gen,url,bd,L"sha256",L""); CkXmlDSigGenW_SetRefIdAttr(gen,url,L"xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4-ref2"); // -------- Reference 4 -------- CkBinDataW_Clear(bd); url = L"https://isus.ezdrowie.gov.pl/fhir/Procedure/123456/_history/1"; success = CkHttpW_QuickGetBd(http,url,bd); if (success != TRUE) { wprintf(L"%s\n",CkHttpW_lastErrorText(http)); CkXmlDSigGenW_Dispose(gen); CkXmlW_Dispose(object1); CkHttpW_Dispose(http); CkBinDataW_Dispose(bd); return; } CkXmlDSigGenW_AddExternalBinaryRef(gen,url,bd,L"sha256",L""); CkXmlDSigGenW_SetRefIdAttr(gen,url,L"xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4-ref3"); // -------- Reference 5 -------- CkXmlDSigGenW_AddObjectRef(gen,L"xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4-signedprops",L"sha256",L"C14N",L"",L"http://uri.etsi.org/01903#SignedProperties"); // 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)); CkXmlDSigGenW_Dispose(gen); CkXmlW_Dispose(object1); CkHttpW_Dispose(http); CkBinDataW_Dispose(bd); CkCertW_Dispose(cert); return; } CkXmlDSigGenW_SetX509Cert(gen,cert,TRUE); CkXmlDSigGenW_putKeyInfoType(gen,L"X509Data"); CkXmlDSigGenW_putX509Type(gen,L"IssuerSerial,SubjectName,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(); CkXmlDSigGenW_putBehaviors(gen,L"IndentedSignature"); // Sign the XML... success = CkXmlDSigGenW_CreateXmlDSigSb(gen,sbXml); if (success != TRUE) { wprintf(L"%s\n",CkXmlDSigGenW_lastErrorText(gen)); CkXmlDSigGenW_Dispose(gen); CkXmlW_Dispose(object1); CkHttpW_Dispose(http); CkBinDataW_Dispose(bd); 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)); CkXmlDSigGenW_Dispose(gen); CkXmlW_Dispose(object1); CkHttpW_Dispose(http); CkBinDataW_Dispose(bd); 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)); CkXmlDSigGenW_Dispose(gen); CkXmlW_Dispose(object1); CkHttpW_Dispose(http); CkBinDataW_Dispose(bd); CkCertW_Dispose(cert); CkStringBuilderW_Dispose(sbXml); CkXmlDSigW_Dispose(verifier); return; } wprintf(L"This signature was successfully verified.\n"); CkXmlDSigGenW_Dispose(gen); CkXmlW_Dispose(object1); CkHttpW_Dispose(http); CkBinDataW_Dispose(bd); CkCertW_Dispose(cert); CkStringBuilderW_Dispose(sbXml); CkXmlDSigW_Dispose(verifier); } |
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