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XML-DSig Add Reference with Transforms Specified Explicitly

Demonstrates how to use the new AddSameDocRef2 method to explicitly specify the XML Transforms fragment.

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Add-Type -Path "C:\chilkat\ChilkatDotNet47-x64\ChilkatDotNet47.dll"

$success = $false

# This example requires the Chilkat API to have been previously unlocked.
# See Global Unlock Sample for sample code.

$success = $true

# Create the following XML to be signed:

# <doc>
#     <s id="s1">Some text...</s>
#     <p>Some text...</p>
#     <p class="note">A note...</p>
# </doc>

# Use this online tool to generate code from sample XML: 
# Generate Code to Create XML

$xmlToSign = New-Object Chilkat.Xml
$xmlToSign.Tag = "doc"
$xmlToSign.UpdateAttrAt("s",$true,"id","s1")
$xmlToSign.UpdateChildContent("s","Some text...")
$xmlToSign.UpdateChildContent("p","Some text...")
$xmlToSign.UpdateAttrAt("p[1]",$true,"class","note")
$xmlToSign.UpdateChildContent("p[1]","A note...")

$($xmlToSign.GetXml())

$gen = New-Object Chilkat.XmlDSigGen

$gen.SigLocation = "doc"
$gen.SigLocationMod = 0
$gen.SigId = "Signature-78f29839-06af-448f-b479-ca46457fab1b-Signature"
$gen.SigNamespacePrefix = "ds"
$gen.SigNamespaceUri = "http://www.w3.org/2000/09/xmldsig#"
$gen.SigValueId = "Signature-78f29839-06af-448f-b479-ca46457fab1b-SignatureValue"
$gen.SignedInfoCanonAlg = "C14N"
$gen.SignedInfoDigestMethod = "sha1"

# Set the KeyInfoId before adding references..
$gen.KeyInfoId = "Signature-78f29839-06af-448f-b479-ca46457fab1b-KeyInfo"

# The following XML to be added as an Object to the Signature

# Use this online tool to generate code from sample XML: 
# Generate Code to Create XML

# <xades:QualifyingProperties Id="Signature-78f29839-06af-448f-b479-ca46457fab1b-QualifyingProperties" Target="#Signature-78f29839-06af-448f-b479-ca46457fab1b-Signature" xmlns:ds="http://www.w3.org/2000/09/xmldsig#" xmlns:xades="http://uri.etsi.org/01903/v1.3.2#">
#     <xades:SignedProperties Id="Signature-78f29839-06af-448f-b479-ca46457fab1b-SignedProperties">
#         <xades:SignedSignatureProperties>
#             <xades:SigningTime>TO BE GENERATED BY CHILKAT</xades:SigningTime>
#             <xades:SigningCertificate>
#                 <xades:Cert>
#                     <xades:CertDigest>
#                         <ds:DigestMethod Algorithm="http://www.w3.org/2000/09/xmldsig#sha1"/>
#                         <ds:DigestValue>TO BE GENERATED BY CHILKAT</ds:DigestValue>
#                     </xades:CertDigest>
#                     <xades:IssuerSerial>
#                         <ds:X509IssuerName>TO BE GENERATED BY CHILKAT</ds:X509IssuerName>
#                         <ds:X509SerialNumber>TO BE GENERATED BY CHILKAT</ds:X509SerialNumber>
#                     </xades:IssuerSerial>
#                 </xades:Cert>
#             </xades:SigningCertificate>
#         </xades:SignedSignatureProperties>
#         <xades:SignedDataObjectProperties>
#             <xades:DataObjectFormat ObjectReference="#Reference-24eb6003-d41c-442c-a731-d4c58f94790b">
#                 <xades:Description/>
#                 <xades:ObjectIdentifier>
#                     <xades:Identifier Qualifier="OIDAsURN">urn:oid:1.2.840.10003.5.109.10</xades:Identifier>
#                     <xades:Description/>
#                 </xades:ObjectIdentifier>
#                 <xades:MimeType>text/xml</xades:MimeType>
#                 <xades:Encoding/>
#             </xades:DataObjectFormat>
#         </xades:SignedDataObjectProperties>
#     </xades:SignedProperties>
# </xades:QualifyingProperties>

$object1 = New-Object Chilkat.Xml
$object1.Tag = "xades:QualifyingProperties"
$object1.AddAttribute("Id","Signature-78f29839-06af-448f-b479-ca46457fab1b-QualifyingProperties")
$object1.AddAttribute("Target","#Signature-78f29839-06af-448f-b479-ca46457fab1b-Signature")
$object1.AddAttribute("xmlns:ds","http://www.w3.org/2000/09/xmldsig#")
$object1.AddAttribute("xmlns:xades","http://uri.etsi.org/01903/v1.3.2#")
$object1.UpdateAttrAt("xades:SignedProperties",$true,"Id","Signature-78f29839-06af-448f-b479-ca46457fab1b-SignedProperties")
$object1.UpdateChildContent("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningTime","TO BE GENERATED BY CHILKAT")
# Note: It may be that http://www.w3.org/2001/04/xmlenc#sha256 is needed in the following line instead of http://www.w3.org/2000/09/xmldsig#sha1
$object1.UpdateAttrAt("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificateV2|xades:Cert|xades:CertDigest|ds:DigestMethod",$true,"Algorithm","http://www.w3.org/2000/09/xmldsig#sha1")
$object1.UpdateChildContent("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificateV2|xades:Cert|xades:CertDigest|ds:DigestValue","TO BE GENERATED BY CHILKAT")
$object1.UpdateChildContent("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificateV2|xades:Cert|xades:IssuerSerialV2","TO BE GENERATED BY CHILKAT")
$object1.UpdateAttrAt("xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat",$true,"ObjectReference","#Reference-24eb6003-d41c-442c-a731-d4c58f94790b")
$object1.UpdateChildContent("xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:Description","")
$object1.UpdateAttrAt("xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:ObjectIdentifier|xades:Identifier",$true,"Qualifier","OIDAsURN")
$object1.UpdateChildContent("xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:ObjectIdentifier|xades:Identifier","urn:oid:1.2.840.10003.5.109.10")
$object1.UpdateChildContent("xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:ObjectIdentifier|xades:Description","")
$object1.UpdateChildContent("xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:MimeType","text/xml")
$object1.UpdateChildContent("xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:Encoding","")

$($object1.GetXml())

$gen.AddObject("",$object1.GetXml(),"","")

# -------- Reference 1 --------

# Create the following Transforms fragment:

# Use this online tool to generate code from sample XML: 
# Generate Code to Create XML

# <ds:Transforms>
#     <ds:Transform Algorithm="http://www.w3.org/TR/2001/REC-xml-c14n-20010315"/>
#     <ds:Transform Algorithm="http://www.w3.org/2000/09/xmldsig#enveloped-signature"/>
#     <ds:Transform Algorithm="http://www.w3.org/TR/1999/REC-xpath-19991116">
#         <ds:XPath xmlns:ds="http://www.w3.org/2000/09/xmldsig#">not(ancestor-or-self::ds:Signature)</ds:XPath>
#     </ds:Transform>
# </ds:Transforms>

$xml1 = New-Object Chilkat.Xml
$xml1.Tag = "ds:Transforms"
$xml1.UpdateAttrAt("ds:Transform",$true,"Algorithm","http://www.w3.org/TR/2001/REC-xml-c14n-20010315")
$xml1.UpdateAttrAt("ds:Transform[1]",$true,"Algorithm","http://www.w3.org/2000/09/xmldsig#enveloped-signature")
$xml1.UpdateAttrAt("ds:Transform[2]",$true,"Algorithm","http://www.w3.org/TR/1999/REC-xpath-19991116")
$xml1.UpdateAttrAt("ds:Transform[2]|ds:XPath",$true,"xmlns:ds","http://www.w3.org/2000/09/xmldsig#")
$xml1.UpdateChildContent("ds:Transform[2]|ds:XPath","not(ancestor-or-self::ds:Signature)")

# This is the "Transforms" XML fragment passed to AddSameDocRef2.
$($xml1.GetXml())

$gen.AddSameDocRef2("","sha1",$xml1,"")

$gen.SetRefIdAttr("","Reference-24eb6003-d41c-442c-a731-d4c58f94790b")

# -------- Reference 2 --------
$gen.AddObjectRef("Signature-78f29839-06af-448f-b479-ca46457fab1b-SignedProperties","sha1","","","http://uri.etsi.org/01903#SignedProperties")

# -------- Reference 3 --------
$gen.AddSameDocRef("Signature-78f29839-06af-448f-b479-ca46457fab1b-KeyInfo","sha1","","","")

# Provide a certificate + private key. (PFX password is test123)
$cert = New-Object Chilkat.Cert
$success = $cert.LoadPfxFile("qa_data/pfx/cert_test123.pfx","test123")
if ($success -ne $true) {
    $($cert.LastErrorText)
    exit
}

$gen.SetX509Cert($cert,$true)

$gen.KeyInfoType = "X509Data+KeyValue"
$gen.X509Type = "CertChain"

# Load XML to be signed...
$sbXml = New-Object Chilkat.StringBuilder
$xmlToSign.GetXmlSb($sbXml)

$gen.Behaviors = "IndentedSignature"

# Sign the XML...
$success = $gen.CreateXmlDSigSb($sbXml)
if ($success -ne $true) {
    $($gen.LastErrorText)
    exit
}

# -----------------------------------------------

# Save the signed XML to a file.
$success = $sbXml.WriteFile("qa_output/signedXml.xml","utf-8",$false)

$($sbXml.GetAsString())

# ----------------------------------------
# Verify the signatures we just produced...
$verifier = New-Object Chilkat.XmlDSig
$success = $verifier.LoadSignatureSb($sbXml)
if ($success -ne $true) {
    $($verifier.LastErrorText)
    exit
}

$numSigs = $verifier.NumSignatures
$verifyIdx = 0
while ($verifyIdx -lt $numSigs) {
    $verifier.Selector = $verifyIdx
    $verified = $verifier.VerifySignature($true)
    if ($verified -ne $true) {
        $($verifier.LastErrorText)
        exit
    }

    $verifyIdx = $verifyIdx + 1
}

$("All signatures were successfully verified.")