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Go
XML-DSig Add Reference with Transforms Specified Explicitly
Demonstrates how to use the new AddSameDocRef2 method to explicitly specify the XML Transforms fragment.Chilkat Go Downloads
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 := chilkat.NewXml()
xmlToSign.SetTag("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...")
fmt.Println(*xmlToSign.GetXml())
gen := chilkat.NewXmlDSigGen()
gen.SetSigLocation("doc")
gen.SetSigLocationMod(0)
gen.SetSigId("Signature-78f29839-06af-448f-b479-ca46457fab1b-Signature")
gen.SetSigNamespacePrefix("ds")
gen.SetSigNamespaceUri("http://www.w3.org/2000/09/xmldsig#")
gen.SetSigValueId("Signature-78f29839-06af-448f-b479-ca46457fab1b-SignatureValue")
gen.SetSignedInfoCanonAlg("C14N")
gen.SetSignedInfoDigestMethod("sha1")
// Set the KeyInfoId before adding references..
gen.SetKeyInfoId("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 := chilkat.NewXml()
object1.SetTag("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","")
fmt.Println(*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 := chilkat.NewXml()
xml1.SetTag("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.
fmt.Println(*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 := chilkat.NewCert()
success = cert.LoadPfxFile("qa_data/pfx/cert_test123.pfx","test123")
if success != true {
fmt.Println(cert.LastErrorText())
xmlToSign.DisposeXml()
gen.DisposeXmlDSigGen()
object1.DisposeXml()
xml1.DisposeXml()
cert.DisposeCert()
return
}
gen.SetX509Cert(cert,true)
gen.SetKeyInfoType("X509Data+KeyValue")
gen.SetX509Type("CertChain")
// Load XML to be signed...
sbXml := chilkat.NewStringBuilder()
xmlToSign.GetXmlSb(sbXml)
gen.SetBehaviors("IndentedSignature")
// Sign the XML...
success = gen.CreateXmlDSigSb(sbXml)
if success != true {
fmt.Println(gen.LastErrorText())
xmlToSign.DisposeXml()
gen.DisposeXmlDSigGen()
object1.DisposeXml()
xml1.DisposeXml()
cert.DisposeCert()
sbXml.DisposeStringBuilder()
return
}
// -----------------------------------------------
// Save the signed XML to a file.
success = sbXml.WriteFile("qa_output/signedXml.xml","utf-8",false)
fmt.Println(*sbXml.GetAsString())
// ----------------------------------------
// Verify the signatures we just produced...
verifier := chilkat.NewXmlDSig()
success = verifier.LoadSignatureSb(sbXml)
if success != true {
fmt.Println(verifier.LastErrorText())
xmlToSign.DisposeXml()
gen.DisposeXmlDSigGen()
object1.DisposeXml()
xml1.DisposeXml()
cert.DisposeCert()
sbXml.DisposeStringBuilder()
verifier.DisposeXmlDSig()
return
}
numSigs := verifier.NumSignatures()
verifyIdx := 0
for verifyIdx < numSigs {
verifier.SetSelector(verifyIdx)
verified := verifier.VerifySignature(true)
if verified != true {
fmt.Println(verifier.LastErrorText())
xmlToSign.DisposeXml()
gen.DisposeXmlDSigGen()
object1.DisposeXml()
xml1.DisposeXml()
cert.DisposeCert()
sbXml.DisposeStringBuilder()
verifier.DisposeXmlDSig()
return
}
verifyIdx = verifyIdx + 1
}
fmt.Println("All signatures were successfully verified.")
xmlToSign.DisposeXml()
gen.DisposeXmlDSigGen()
object1.DisposeXml()
xml1.DisposeXml()
cert.DisposeCert()
sbXml.DisposeStringBuilder()
verifier.DisposeXmlDSig()