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Perl

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).

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Chilkat2 Perl 
use strict;
use warnings;
use Chilkat2;

# 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

my $success = 1;
my $xmlToSign = Chilkat2::Xml->new;
$xmlToSign->Tag('samlp:AuthnRequest');
$xmlToSign->AddAttribute('xmlns:samlp', 'urn:oasis:names:tc:SAML:2.0:protocol');
$xmlToSign->AddAttribute('xmlns:saml', 'urn:oasis:names:tc:SAML:2.0:assertion');
$xmlToSign->AddAttribute('ID', 'pfx41d8ef22-e612-8c50-9960-1b16f15741b3');
$xmlToSign->AddAttribute('Version', '2.0');
$xmlToSign->AddAttribute('ProviderName', 'SP test');
$xmlToSign->AddAttribute('IssueInstant', '2014-07-16T23:52:45Z');
$xmlToSign->AddAttribute('Destination', 'http://idp.example.com/SSOService.php');
$xmlToSign->AddAttribute('ProtocolBinding', 'urn:oasis:names:tc:SAML:2.0:bindings:HTTP-POST');
$xmlToSign->AddAttribute('AssertionConsumerServiceURL', 'http://sp.example.com/demo1/index.php?acs');
$xmlToSign->UpdateChildContent('saml:Issuer', 'http://sp.example.com/demo1/metadata.php');
$xmlToSign->UpdateAttrAt('samlp:NameIDPolicy', 1, 'Format', 'urn:oasis:names:tc:SAML:1.1:nameid-format:emailAddress');
$xmlToSign->UpdateAttrAt('samlp:NameIDPolicy', 1, 'AllowCreate', 'true');
$xmlToSign->UpdateAttrAt('samlp:RequestedAuthnContext', 1, '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

my $gen = Chilkat2::XmlDSigGen->new;

$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 --------
$gen->AddSameDocRef('pfx41d8ef22-e612-8c50-9960-1b16f15741b3', 'sha1', 'EXCL_C14N', '', '');

# Provide a certificate + private key. (PFX password is test123)
my $cert = Chilkat2::Cert->new;
$success = $cert->LoadPfxFile('qa_data/pfx/cert_test123.pfx', 'test123');
if (!$success) {
    print $cert->LastErrorText, "\n";
    exit;
}

$gen->SetX509Cert($cert, 1);

$gen->KeyInfoType('X509Data');
$gen->X509Type('Certificate');

# Load XML to be signed...
my $sbXml = Chilkat2::StringBuilder->new;
$xmlToSign->GetXmlSb($sbXml);

$gen->Behaviors('IndentedSignature,ForceAddEnvelopedSignatureTransform');

# Sign the XML...
$success = $gen->CreateXmlDSigSb($sbXml);
if (!$success) {
    print $gen->LastErrorText, "\n";
    exit;
}

# Save the signed XMl to a file.
$success = $sbXml->WriteFile('qa_output/signedXml.xml', 'utf-8', 0);

# A sample of the signed XML is shown below..
print $sbXml->GetAsString(), "\n";

# ----------------------------------------
# Verify the signature we just produced...
my $verifier = Chilkat2::XmlDSig->new;
$success = $verifier->LoadSignatureSb($sbXml);
if (!$success) {
    print $verifier->LastErrorText, "\n";
    exit;
}

my $verified = $verifier->VerifySignature(1);
if (!$verified) {
    print $verifier->LastErrorText, "\n";
    exit;
}

print "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>
#