Unicode C
Unicode C
XML Signature Multiple External References
See more XML Digital Signatures Examples
Demonstrates how to add multiple external references to an XML digital signature.Chilkat Unicode C Downloads
#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;
success = FALSE;
// 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:SigningCertificateV2|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:SigningCertificateV2|xades:Cert|xades:CertDigest|ds:DigestValue",L"TO BE GENERATED BY CHILKAT");
CkXmlW_UpdateChildContent(object1,L"xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificateV2|xades:Cert|xades:IssuerSerialV2",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);
}