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(Xojo Plugin) Create AuthNRequest with embedded signature (HTTP-POST binding)

Demonstrates how to create a SAML AuthNRequest with embedded signature (HTTP-POST binding).

Chilkat Xojo Plugin Download

Xojo Plugin for Windows, Linux, Mac OS X, and ARM

// 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 the this online tool to generate the code from sample XML: 
// Generate Code to Create XML

Dim success As Boolean
success = True
Dim xmlToSign As New Chilkat.Xml
xmlToSign.Tag = "samlp:AuthnRequest"
success = xmlToSign.AddAttribute("xmlns:samlp","urn:oasis:names:tc:SAML:2.0:protocol")
success = xmlToSign.AddAttribute("xmlns:saml","urn:oasis:names:tc:SAML:2.0:assertion")
success = xmlToSign.AddAttribute("ID","pfx41d8ef22-e612-8c50-9960-1b16f15741b3")
success = xmlToSign.AddAttribute("Version","2.0")
success = xmlToSign.AddAttribute("ProviderName","SP test")
success = xmlToSign.AddAttribute("IssueInstant","2014-07-16T23:52:45Z")
success = xmlToSign.AddAttribute("Destination","http://idp.example.com/SSOService.php")
success = xmlToSign.AddAttribute("ProtocolBinding","urn:oasis:names:tc:SAML:2.0:bindings:HTTP-POST")
success = xmlToSign.AddAttribute("AssertionConsumerServiceURL","http://sp.example.com/demo1/index.php?acs")
xmlToSign.UpdateChildContent "saml:Issuer","http://sp.example.com/demo1/metadata.php"
success = xmlToSign.UpdateAttrAt("samlp:NameIDPolicy",True,"Format","urn:oasis:names:tc:SAML:1.1:nameid-format:emailAddress")
success = xmlToSign.UpdateAttrAt("samlp:NameIDPolicy",True,"AllowCreate","true")
success = xmlToSign.UpdateAttrAt("samlp:RequestedAuthnContext",True,"Comparison","exact")
xmlToSign.UpdateChildContent "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

Dim gen As New Chilkat.XmlDSigGen

gen.SigLocation = "samlp:AuthnRequest"
gen.SigNamespacePrefix = "ds"
gen.SigNamespaceUri = "http://www.w3.org/2000/09/xmldsig#"
gen.SignedInfoCanonAlg = "EXCL_C14N"
gen.SignedInfoDigestMethod = "sha1"

// -------- Reference 1 --------
success = gen.AddSameDocRef("pfx41d8ef22-e612-8c50-9960-1b16f15741b3","sha1","EXCL_C14N","","")

// Provide a certificate + private key. (PFX password is test123)
Dim cert As New Chilkat.Cert
success = cert.LoadPfxFile("qa_data/pfx/cert_test123.pfx","test123")
If (success <> True) Then
    System.DebugLog(cert.LastErrorText)
    Return
End If

success = gen.SetX509Cert(cert,True)

gen.KeyInfoType = "X509Data"
gen.X509Type = "Certificate"

// Load XML to be signed...
Dim sbXml As New Chilkat.StringBuilder
success = xmlToSign.GetXmlSb(sbXml)

gen.Behaviors = "IndentedSignature,ForceAddEnvelopedSignatureTransform"

// Sign the XML...
success = gen.CreateXmlDSigSb(sbXml)
If (success <> True) Then
    System.DebugLog(gen.LastErrorText)
    Return
End If

// Save the signed XMl to a file.
success = sbXml.WriteFile("qa_output/signedXml.xml","utf-8",False)

// A sample of the signed XML is shown below..
System.DebugLog(sbXml.GetAsString())

// ----------------------------------------
// Verify the signature we just produced...
Dim verifier As New Chilkat.XmlDSig
success = verifier.LoadSignatureSb(sbXml)
If (success <> True) Then
    System.DebugLog(verifier.LastErrorText)
    Return
End If

Dim verified As Boolean
verified = verifier.VerifySignature(True)
If (verified <> True) Then
    System.DebugLog(verifier.LastErrorText)
    Return
End If

System.DebugLog("This signature was successfully verified.")

// -----------------------------------------
// 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>
// 

 

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