C
C
Sign Italian SPID Metadata XML
See more XML Digital Signatures Examples
Demonstrates how to create an XML digital signature for Italian SPID Metadata.Chilkat C Downloads
#include <C_CkStringBuilder.h>
#include <C_CkXmlDSigGen.h>
#include <C_CkCert.h>
#include <C_CkXmlDSig.h>
void ChilkatSample(void)
{
BOOL success;
HCkStringBuilder sbXml;
HCkXmlDSigGen gen;
HCkCert cert;
HCkXmlDSig verifier;
int numSigs;
int verifyIdx;
BOOL verified;
success = FALSE;
// This example assumes the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.
success = TRUE;
// Load the XML to be signed.
sbXml = CkStringBuilder_Create();
success = CkStringBuilder_LoadFile(sbXml,"qa_data/xml_dsig/spid_metadata.xml","utf-8");
if (success == FALSE) {
printf("Failed to load the input file.\n");
CkStringBuilder_Dispose(sbXml);
return;
}
// The XML to sign contains XML such as this:
// <?xml version="1.0" encoding="utf-8"?>
// <md:EntityDescriptor xmlns:md="urn:oasis:names:tc:SAML:2.0:metadata" xmlns:ds="http://www.w3.org/2000/09/xmldsig#" entityID="https://***.it" ID="_AE17AFFF-A600-49D5-B81D-76EEA55B50FF">
// <md:SPSSODescriptor protocolSupportEnumeration="urn:oasis:names:tc:SAML:2.0:protocol" AuthnRequestsSigned="true" WantAssertionsSigned="true">
// <md:KeyDescriptor use="signing">
// <ds:KeyInfo xmlns:ds="http://www.w3.org/2000/09/xmldsig#">
// <ds:X509Data>
// <ds:X509Certificate>MIIF5...</ds:X509Certificate>
// </ds:X509Data>
// </ds:KeyInfo>
// </md:KeyDescriptor>
// <md:KeyDescriptor use="encryption">
// <ds:KeyInfo xmlns:ds="http://www.w3.org/2000/09/xmldsig#">
// <ds:X509Data>
// <ds:X509Certificate>MIIF5...</ds:X509Certificate>
// </ds:X509Data>
// </ds:KeyInfo>
// </md:KeyDescriptor>
// <md:SingleLogoutService Binding="urn:oasis:names:tc:SAML:2.0:bindings:HTTP-POST" Location="https://***.it/it-it/spid/logout"/>
// <md:NameIDFormat>urn:oasis:names:tc:SAML:2.0:nameid-format:transient</md:NameIDFormat>
// <md:AssertionConsumerService Binding="urn:oasis:names:tc:SAML:2.0:bindings:HTTP-POST" Location="https://***.it/it-it/spid/loginresp" index="0" isDefault="true"/>
// <md:AttributeConsumingService index="1">
// <md:ServiceName xml:lang="it">Servizi Online</md:ServiceName>
// <md:ServiceDescription xml:lang="it">Accesso ai Servizi Online</md:ServiceDescription>
// <md:RequestedAttribute Name="spidCode" NameFormat="urn:oasis:names:tc:SAML:2.0:attrname-format:basic"/>
// <md:RequestedAttribute Name="name" NameFormat="urn:oasis:names:tc:SAML:2.0:attrname-format:basic"/>
// <md:RequestedAttribute Name="familyName" NameFormat="urn:oasis:names:tc:SAML:2.0:attrname-format:basic"/>
// <md:RequestedAttribute Name="fiscalNumber" NameFormat="urn:oasis:names:tc:SAML:2.0:attrname-format:basic"/>
// </md:AttributeConsumingService>
// </md:SPSSODescriptor>
// <md:Organization>
// <md:OrganizationName xml:lang="it">SomeCompany s.r.l.</md:OrganizationName>
// <md:OrganizationDisplayName xml:lang="it">SomeCompany s.r.l.</md:OrganizationDisplayName>
// <md:OrganizationURL xml:lang="it">https://***.it</md:OrganizationURL>
// </md:Organization>
// </md:EntityDescriptor>
gen = CkXmlDSigGen_Create();
CkXmlDSigGen_putSigLocation(gen,"md:EntityDescriptor|md:SPSSODescriptor");
CkXmlDSigGen_putSigLocationMod(gen,2);
CkXmlDSigGen_putSignedInfoCanonAlg(gen,"EXCL_C14N");
CkXmlDSigGen_putSignedInfoDigestMethod(gen,"sha256");
// -------- Reference 1 --------
CkXmlDSigGen_AddSameDocRef(gen,"_AE17AFFF-A600-49D5-B81D-76EEA55B50FF","sha256","EXCL_C14N","","");
// Provide a certificate + private key. (PFX password is test123)
cert = CkCert_Create();
success = CkCert_LoadPfxFile(cert,"qa_data/pfx/cert_test123.pfx","test123");
if (success != TRUE) {
printf("%s\n",CkCert_lastErrorText(cert));
CkStringBuilder_Dispose(sbXml);
CkXmlDSigGen_Dispose(gen);
CkCert_Dispose(cert);
return;
}
CkXmlDSigGen_SetX509Cert(gen,cert,TRUE);
CkXmlDSigGen_putKeyInfoType(gen,"X509Data+KeyValue");
CkXmlDSigGen_putX509Type(gen,"Certificate");
CkXmlDSigGen_putBehaviors(gen,"IndentedSignature,ForceAddEnvelopedSignatureTransform,OmitAlreadyDefinedSigNamespace");
// Sign the XML...
success = CkXmlDSigGen_CreateXmlDSigSb(gen,sbXml);
if (success != TRUE) {
printf("%s\n",CkXmlDSigGen_lastErrorText(gen));
CkStringBuilder_Dispose(sbXml);
CkXmlDSigGen_Dispose(gen);
CkCert_Dispose(cert);
return;
}
// -----------------------------------------------
// Save the signed XML to a file.
success = CkStringBuilder_WriteFile(sbXml,"qa_output/signedXml.xml","utf-8",FALSE);
printf("%s\n",CkStringBuilder_getAsString(sbXml));
// ----------------------------------------
// Verify the signatures we just produced...
verifier = CkXmlDSig_Create();
success = CkXmlDSig_LoadSignatureSb(verifier,sbXml);
if (success != TRUE) {
printf("%s\n",CkXmlDSig_lastErrorText(verifier));
CkStringBuilder_Dispose(sbXml);
CkXmlDSigGen_Dispose(gen);
CkCert_Dispose(cert);
CkXmlDSig_Dispose(verifier);
return;
}
numSigs = CkXmlDSig_getNumSignatures(verifier);
verifyIdx = 0;
while (verifyIdx < numSigs) {
CkXmlDSig_putSelector(verifier,verifyIdx);
verified = CkXmlDSig_VerifySignature(verifier,TRUE);
if (verified != TRUE) {
printf("%s\n",CkXmlDSig_lastErrorText(verifier));
CkStringBuilder_Dispose(sbXml);
CkXmlDSigGen_Dispose(gen);
CkCert_Dispose(cert);
CkXmlDSig_Dispose(verifier);
return;
}
verifyIdx = verifyIdx + 1;
}
printf("All signatures were successfully verified.\n");
CkStringBuilder_Dispose(sbXml);
CkXmlDSigGen_Dispose(gen);
CkCert_Dispose(cert);
CkXmlDSig_Dispose(verifier);
}