C
C
Create AuthNRequest with embedded signature (HTTP-POST binding)
See more XML Digital Signatures Examples
Demonstrates how to create a SAML AuthNRequest with embedded signature (HTTP-POST binding).Chilkat C Downloads
#include <C_CkXml.h>
#include <C_CkXmlDSigGen.h>
#include <C_CkCert.h>
#include <C_CkStringBuilder.h>
#include <C_CkXmlDSig.h>
void ChilkatSample(void)
{
BOOL success;
HCkXml xmlToSign;
HCkXmlDSigGen gen;
HCkCert cert;
HCkStringBuilder sbXml;
HCkXmlDSig 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 will sign the following SAML AuthNRequest:
// <samlp:AuthnRequest
// xmlns:samlp="urn:oasis:names:tc:SAML:2.0:protocol"
// xmlns:saml="urn:oasis:names:tc:SAML:2.0:assertion"
// ID="pfx41d8ef22-e612-8c50-9960-1b16f15741b3"
// Version="2.0" ProviderName="SP test" IssueInstant="2014-07-16T23:52:45Z"
// Destination="http://idp.example.com/SSOService.php"
// ProtocolBinding="urn:oasis:names:tc:SAML:2.0:bindings:HTTP-POST"
// AssertionConsumerServiceURL="http://sp.example.com/demo1/index.php?acs">
// <saml:Issuer>http://sp.example.com/demo1/metadata.php</saml:Issuer>
// <samlp:NameIDPolicy Format="urn:oasis:names:tc:SAML:1.1:nameid-format:emailAddress" AllowCreate="true"/>
// <samlp:RequestedAuthnContext Comparison="exact">
// <saml:AuthnContextClassRef>urn:oasis:names:tc:SAML:2.0:ac:classes:PasswordProtectedTransport</saml:AuthnContextClassRef>
// </samlp:RequestedAuthnContext>
// </samlp:AuthnRequest>
// First we build the XML to be signed.
//
// Use this online tool to generate the code from sample XML:
// Generate Code to Create XML
success = TRUE;
xmlToSign = CkXml_Create();
CkXml_putTag(xmlToSign,"samlp:AuthnRequest");
CkXml_AddAttribute(xmlToSign,"xmlns:samlp","urn:oasis:names:tc:SAML:2.0:protocol");
CkXml_AddAttribute(xmlToSign,"xmlns:saml","urn:oasis:names:tc:SAML:2.0:assertion");
CkXml_AddAttribute(xmlToSign,"ID","pfx41d8ef22-e612-8c50-9960-1b16f15741b3");
CkXml_AddAttribute(xmlToSign,"Version","2.0");
CkXml_AddAttribute(xmlToSign,"ProviderName","SP test");
CkXml_AddAttribute(xmlToSign,"IssueInstant","2014-07-16T23:52:45Z");
CkXml_AddAttribute(xmlToSign,"Destination","http://idp.example.com/SSOService.php");
CkXml_AddAttribute(xmlToSign,"ProtocolBinding","urn:oasis:names:tc:SAML:2.0:bindings:HTTP-POST");
CkXml_AddAttribute(xmlToSign,"AssertionConsumerServiceURL","http://sp.example.com/demo1/index.php?acs");
CkXml_UpdateChildContent(xmlToSign,"saml:Issuer","http://sp.example.com/demo1/metadata.php");
CkXml_UpdateAttrAt(xmlToSign,"samlp:NameIDPolicy",TRUE,"Format","urn:oasis:names:tc:SAML:1.1:nameid-format:emailAddress");
CkXml_UpdateAttrAt(xmlToSign,"samlp:NameIDPolicy",TRUE,"AllowCreate","true");
CkXml_UpdateAttrAt(xmlToSign,"samlp:RequestedAuthnContext",TRUE,"Comparison","exact");
CkXml_UpdateChildContent(xmlToSign,"samlp:RequestedAuthnContext|saml:AuthnContextClassRef","urn:oasis:names:tc:SAML:2.0:ac:classes:PasswordProtectedTransport");
// Also see the online tool to generate the code from sample already-signed XML:
// Generate XML Signature Creation Code from an Already-Signed XML Sample
gen = CkXmlDSigGen_Create();
CkXmlDSigGen_putSigLocation(gen,"samlp:AuthnRequest");
CkXmlDSigGen_putSigNamespacePrefix(gen,"ds");
CkXmlDSigGen_putSigNamespaceUri(gen,"http://www.w3.org/2000/09/xmldsig#");
CkXmlDSigGen_putSignedInfoCanonAlg(gen,"EXCL_C14N");
CkXmlDSigGen_putSignedInfoDigestMethod(gen,"sha1");
// -------- Reference 1 --------
CkXmlDSigGen_AddSameDocRef(gen,"pfx41d8ef22-e612-8c50-9960-1b16f15741b3","sha1","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));
CkXml_Dispose(xmlToSign);
CkXmlDSigGen_Dispose(gen);
CkCert_Dispose(cert);
return;
}
CkXmlDSigGen_SetX509Cert(gen,cert,TRUE);
CkXmlDSigGen_putKeyInfoType(gen,"X509Data");
CkXmlDSigGen_putX509Type(gen,"Certificate");
// Load XML to be signed...
sbXml = CkStringBuilder_Create();
CkXml_GetXmlSb(xmlToSign,sbXml);
CkXmlDSigGen_putBehaviors(gen,"IndentedSignature,ForceAddEnvelopedSignatureTransform");
// Sign the XML...
success = CkXmlDSigGen_CreateXmlDSigSb(gen,sbXml);
if (success != TRUE) {
printf("%s\n",CkXmlDSigGen_lastErrorText(gen));
CkXml_Dispose(xmlToSign);
CkXmlDSigGen_Dispose(gen);
CkCert_Dispose(cert);
CkStringBuilder_Dispose(sbXml);
return;
}
// Save the signed XMl to a file.
success = CkStringBuilder_WriteFile(sbXml,"qa_output/signedXml.xml","utf-8",FALSE);
// A sample of the signed XML is shown below..
printf("%s\n",CkStringBuilder_getAsString(sbXml));
// ----------------------------------------
// Verify the signature we just produced...
verifier = CkXmlDSig_Create();
success = CkXmlDSig_LoadSignatureSb(verifier,sbXml);
if (success != TRUE) {
printf("%s\n",CkXmlDSig_lastErrorText(verifier));
CkXml_Dispose(xmlToSign);
CkXmlDSigGen_Dispose(gen);
CkCert_Dispose(cert);
CkStringBuilder_Dispose(sbXml);
CkXmlDSig_Dispose(verifier);
return;
}
verified = CkXmlDSig_VerifySignature(verifier,TRUE);
if (verified != TRUE) {
printf("%s\n",CkXmlDSig_lastErrorText(verifier));
CkXml_Dispose(xmlToSign);
CkXmlDSigGen_Dispose(gen);
CkCert_Dispose(cert);
CkStringBuilder_Dispose(sbXml);
CkXmlDSig_Dispose(verifier);
return;
}
printf("This signature was successfully verified.\n");
// -----------------------------------------
// Sample output of AuthNRequest signed XML:
// (Line-breaks and some indenting added for readability..)
// <?xml version="1.0" encoding="utf-8"?>
// <samlp:AuthnRequest
// xmlns:samlp="urn:oasis:names:tc:SAML:2.0:protocol"
// xmlns:saml="urn:oasis:names:tc:SAML:2.0:assertion"
// ID="pfx41d8ef22-e612-8c50-9960-1b16f15741b3"
// Version="2.0" ProviderName="SP test"
// IssueInstant="2014-07-16T23:52:45Z"
// Destination="http://idp.example.com/SSOService.php"
// ProtocolBinding="urn:oasis:names:tc:SAML:2.0:bindings:HTTP-POST"
// AssertionConsumerServiceURL="http://sp.example.com/demo1/index.php?acs">
// <saml:Issuer>http://sp.example.com/demo1/metadata.php</saml:Issuer>
// <samlp:NameIDPolicy Format="urn:oasis:names:tc:SAML:1.1:nameid-format:emailAddress" AllowCreate="true"/>
// <samlp:RequestedAuthnContext Comparison="exact">
// <saml:AuthnContextClassRef>urn:oasis:names:tc:SAML:2.0:ac:classes:PasswordProtectedTransport</saml:AuthnContextClassRef>
// </samlp:RequestedAuthnContext>
// <ds:Signature xmlns:ds="http://www.w3.org/2000/09/xmldsig#">
// <ds:SignedInfo>
// <ds:CanonicalizationMethod Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#"/>
// <ds:SignatureMethod Algorithm="http://www.w3.org/2000/09/xmldsig#rsa-sha1"/>
// <ds:Reference URI="#pfx41d8ef22-e612-8c50-9960-1b16f15741b3">
// <ds:Transforms>
// <ds:Transform Algorithm="http://www.w3.org/2000/09/xmldsig#enveloped-signature"/>
// <ds:Transform Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#"/>
// </ds:Transforms>
// <ds:DigestMethod Algorithm="http://www.w3.org/2000/09/xmldsig#sha1"/>
// <ds:DigestValue>5d+/YNShy4qnvZcvik8fHHg2SWQ=</ds:DigestValue>
// </ds:Reference>
// </ds:SignedInfo>
// <ds:SignatureValue>QS16H5...U5LQ==</ds:SignatureValue>
// <ds:KeyInfo>
// <ds:X509Data>
// <ds:X509Certificate>MIIF...tjlF4=</ds:X509Certificate>
// </ds:X509Data>
// </ds:KeyInfo>
// </ds:Signature>
// </samlp:AuthnRequest>
//
CkXml_Dispose(xmlToSign);
CkXmlDSigGen_Dispose(gen);
CkCert_Dispose(cert);
CkStringBuilder_Dispose(sbXml);
CkXmlDSig_Dispose(verifier);
}