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Chilkat2-Python

Create Signed SOAP XML for DIAN Colombia WCF Service

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Demonstrates how to create a signed SOAP XML document for DIAN Colombia.

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Chilkat2-Python
import sys
import chilkat2

success = False

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

# This example will produce a signed SOAP XML message that looks like this:

# <?xml version="1.0" encoding="utf-8"?>
# <soap:Envelope xmlns:soap="http://www.w3.org/2003/05/soap-envelope" xmlns:wcf="http://wcf.dian.colombia">
#     <soap:Header xmlns:wsa="http://www.w3.org/2005/08/addressing">
#         <wsse:Security xmlns:wsse="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd" xmlns:wsu="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd">
#             <wsu:Timestamp wsu:Id="TS-F25839120CBA3ECDAD68754D0443A667636FDA68">
#                 <wsu:Created>2019-08-23T23:03:01Z</wsu:Created>
#                 <wsu:Expires>2019-08-24T15:43:01Z</wsu:Expires>
#             </wsu:Timestamp>
#             <wsse:BinarySecurityToken EncodingType="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-soap-message-security-1.0#Base64Binary" 
# 			ValueType="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-x509-token-profile-1.0#X509v3" 
# 			wsu:Id="ABCXYZ-9F0F7E15A59816E680B4735080A789DC1EED6C9C">MIIG8jCCBd ... zLjGQUB6lcz</wsse:BinarySecurityToken>
#             <ds:Signature Id="SIG-F25839120CBA3ECDAD68754D0443A667636FDA68" xmlns:ds="http://www.w3.org/2000/09/xmldsig#">
#                 <ds:SignedInfo>
#                     <ds:CanonicalizationMethod Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#">
#                         <ec:InclusiveNamespaces PrefixList="wsa soap wcf" xmlns:ec="http://www.w3.org/2001/10/xml-exc-c14n#"/>
#                     </ds:CanonicalizationMethod>
#                     <ds:SignatureMethod Algorithm="http://www.w3.org/2001/04/xmldsig-more#rsa-sha256"/>
#                     <ds:Reference URI="#ID-F25839120CBA3ECDAD68754D0443A667636FDA68">
#                         <ds:Transforms>
#                             <ds:Transform Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#">
#                                 <ec:InclusiveNamespaces PrefixList="soap wcf" xmlns:ec="http://www.w3.org/2001/10/xml-exc-c14n#"/>
#                             </ds:Transform>
#                         </ds:Transforms>
#                         <ds:DigestMethod Algorithm="http://www.w3.org/2001/04/xmlenc#sha256"/>
#                         <ds:DigestValue>gSIKtjS/BKA2bgecXkM8lYVBDqlXcU3juNYT9a+bSnM=</ds:DigestValue>
#                     </ds:Reference>
#                 </ds:SignedInfo>
#                 <ds:SignatureValue>sL7rOdyfkEnKgJja0eWrv ... YqG0T0pflBsGW9zXkjQ9NvAw==</ds:SignatureValue>
#                 <ds:KeyInfo Id="KI-F25839120CBA3ECDAD68754D0443A667636FDA68">
#                     <wsse:SecurityTokenReference wsu:Id="STR-F25839120CBA3ECDAD68754D0443A667636FDA68">
#                         <wsse:Reference URI="#ABCXYZ-9F0F7E15A59816E680B4735080A789DC1EED6C9C" ValueType="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-x509-token-profile-1.0#X509v3"/>
#                     </wsse:SecurityTokenReference>
#                 </ds:KeyInfo>
#             </ds:Signature>
#         </wsse:Security>
#         <wsa:Action>http://wcf.dian.colombia/IWcfDianCustomerServices/GetStatus</wsa:Action>
#         <wsa:To wsu:Id="ID-F25839120CBA3ECDAD68754D0443A667636FDA68" xmlns:wsu="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd">https://vpfe-hab.dian.gov.co/WcfDianCustomerServices.svc</wsa:To>
#     </soap:Header>
#     <soap:Body>
#         <wcf:GetStatus>
#             <wcf:trackId>123456666</wcf:trackId>
#         </wcf:GetStatus>
#     </soap:Body>
# </soap:Envelope>

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

success = True
# Create the XML to be signed...
xmlToSign = chilkat2.Xml()
xmlToSign.Tag = "soap:Envelope"
xmlToSign.AddAttribute("xmlns:soap","http://www.w3.org/2003/05/soap-envelope")
xmlToSign.AddAttribute("xmlns:wcf","http://wcf.dian.colombia")
xmlToSign.UpdateAttrAt("soap:Header",True,"xmlns:wsa","http://www.w3.org/2005/08/addressing")
xmlToSign.UpdateAttrAt("soap:Header|wsse:Security",True,"xmlns:wsse","http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd")
xmlToSign.UpdateAttrAt("soap:Header|wsse:Security",True,"xmlns:wsu","http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd")
xmlToSign.UpdateAttrAt("soap:Header|wsse:Security|wsu:Timestamp",True,"wsu:Id","TS-F25839120CBA3ECDAD68754D0443A667636FDA68")
xmlToSign.UpdateChildContent("soap:Header|wsse:Security|wsu:Timestamp|wsu:Created","2019-08-23T23:03:01Z")
xmlToSign.UpdateChildContent("soap:Header|wsse:Security|wsu:Timestamp|wsu:Expires","2019-08-24T15:43:01Z")
xmlToSign.UpdateAttrAt("soap:Header|wsse:Security|wsse:BinarySecurityToken",True,"EncodingType","http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-soap-message-security-1.0#Base64Binary")
xmlToSign.UpdateAttrAt("soap:Header|wsse:Security|wsse:BinarySecurityToken",True,"ValueType","http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-x509-token-profile-1.0#X509v3")
xmlToSign.UpdateAttrAt("soap:Header|wsse:Security|wsse:BinarySecurityToken",True,"wsu:Id","ABCXYZ-9F0F7E15A59816E680B4735080A789DC1EED6C9C")
xmlToSign.UpdateChildContent("soap:Header|wsse:Security|wsse:BinarySecurityToken","BinarySecurityToken_Base64Binary_Content")
xmlToSign.UpdateChildContent("soap:Header|wsa:Action","http://wcf.dian.colombia/IWcfDianCustomerServices/GetStatus")
xmlToSign.UpdateAttrAt("soap:Header|wsa:To",True,"wsu:Id","ID-F25839120CBA3ECDAD68754D0443A667636FDA68")
xmlToSign.UpdateAttrAt("soap:Header|wsa:To",True,"xmlns:wsu","http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd")
xmlToSign.UpdateChildContent("soap:Header|wsa:To","https://vpfe-hab.dian.gov.co/WcfDianCustomerServices.svc")
xmlToSign.UpdateChildContent("soap:Body|wcf:GetStatus|wcf:trackId","123456666")

gen = chilkat2.XmlDSigGen()

gen.SigLocation = "soap:Envelope|soap:Header|wsse:Security"
gen.SigLocationMod = 0
gen.SigId = "SIG-F25839120CBA3ECDAD68754D0443A667636FDA68"
gen.SigNamespacePrefix = "ds"
gen.SigNamespaceUri = "http://www.w3.org/2000/09/xmldsig#"
gen.SignedInfoCanonAlg = "EXCL_C14N"
gen.SignedInfoDigestMethod = "sha256"

# Set the KeyInfoId before adding references..
gen.KeyInfoId = "KI-F25839120CBA3ECDAD68754D0443A667636FDA68"

# -------- Reference 1 --------
gen.AddSameDocRef("ID-F25839120CBA3ECDAD68754D0443A667636FDA68","sha256","EXCL_C14N","soap wcf","")

# 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 = "Custom"

# Create the custom KeyInfo XML..
xmlCustomKeyInfo = chilkat2.Xml()
xmlCustomKeyInfo.Tag = "wsse:SecurityTokenReference"
xmlCustomKeyInfo.AddAttribute("wsu:Id","STR-F25839120CBA3ECDAD68754D0443A667636FDA68")
xmlCustomKeyInfo.UpdateAttrAt("wsse:Reference",True,"URI","#ABCXYZ-9F0F7E15A59816E680B4735080A789DC1EED6C9C")
xmlCustomKeyInfo.UpdateAttrAt("wsse:Reference",True,"ValueType","http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-x509-token-profile-1.0#X509v3")

xmlCustomKeyInfo.EmitXmlDecl = False
gen.CustomKeyInfoXml = xmlCustomKeyInfo.GetXml()

# Load XML to be signed...
sbXml = chilkat2.StringBuilder()
xmlToSign.GetXmlSb(sbXml)

# Update BinarySecurityToken_Base64Binary_Content with the actual X509 of the signing cert.
bdCert = chilkat2.BinData()
cert.ExportCertDerBd(bdCert)

nReplaced = sbXml.Replace("BinarySecurityToken_Base64Binary_Content",bdCert.GetEncoded("base64"))

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.")

# --------------------------------------------------------------------------------
# Also see Chilkat's Online WSDL Code Generator
# to generate code and SOAP Request and Response XML for each operation in a WSDL.
# --------------------------------------------------------------------------------