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(Chilkat2-Python) XML-DSig Add Reference with Transforms Specified ExplicitlyDemonstrates how to use the new AddSameDocRef2 method to explicitly specify the XML Transforms fragment.
import sys import chilkat2 # 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 = chilkat2.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...") print(xmlToSign.GetXml()) gen = chilkat2.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 = chilkat2.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:SigningCertificate|xades:Cert|xades:CertDigest|ds:DigestMethod",True,"Algorithm","http://www.w3.org/2000/09/xmldsig#sha1") object1.UpdateChildContent("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert|xades:CertDigest|ds:DigestValue","TO BE GENERATED BY CHILKAT") object1.UpdateChildContent("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert|xades:IssuerSerial|ds:X509IssuerName","TO BE GENERATED BY CHILKAT") object1.UpdateChildContent("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert|xades:IssuerSerial|ds:X509SerialNumber","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","") print(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 = chilkat2.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. print(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 = chilkat2.Cert() success = cert.LoadPfxFile("qa_data/pfx/cert_test123.pfx","test123") if (success != True): print(cert.LastErrorText) sys.exit() gen.SetX509Cert(cert,True) gen.KeyInfoType = "X509Data+KeyValue" gen.X509Type = "CertChain" # Load XML to be signed... sbXml = chilkat2.StringBuilder() xmlToSign.GetXmlSb(sbXml) gen.Behaviors = "IndentedSignature" # Sign the XML... success = gen.CreateXmlDSigSb(sbXml) if (success != True): print(gen.LastErrorText) sys.exit() # ----------------------------------------------- # Save the signed XML to a file. success = sbXml.WriteFile("qa_output/signedXml.xml","utf-8",False) print(sbXml.GetAsString()) # ---------------------------------------- # Verify the signatures we just produced... verifier = chilkat2.XmlDSig() success = verifier.LoadSignatureSb(sbXml) if (success != True): print(verifier.LastErrorText) sys.exit() numSigs = verifier.NumSignatures verifyIdx = 0 while verifyIdx < numSigs : verifier.Selector = verifyIdx verified = verifier.VerifySignature(True) if (verified != True): print(verifier.LastErrorText) sys.exit() verifyIdx = verifyIdx + 1 print("All signatures were successfully verified.") |
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