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(Chilkat2-Python) Get Certificates within XML SignatureDemonstrates how to get the certificates contained within an XML signature.
import sys import chilkat2 # This example requires the Chilkat API to have been previously unlocked. # See Global Unlock Sample for sample code. sbXml = chilkat2.StringBuilder() # Load XML containing one or more signatures. success = sbXml.LoadFile("qa_data/xml_dsig_valid_samples/multipleSigners/sp.pdf.XAdES.xml","utf-8") if (success == False): print("Failed to load the XML file..") sys.exit() dsig = chilkat2.XmlDSig() # First load the XML containing the signatures to be verified. # Note that this particular Signature already contains the RSA public key that will be used # for verification. success = dsig.LoadSignatureSb(sbXml) if (success != True): print(dsig.LastErrorText) sys.exit() # For each signature, verify and also get the certificate(s) contained within each Signature. i = 0 saCerts = chilkat2.StringArray() cert = chilkat2.Cert() print("numSignatures = " + str(dsig.NumSignatures)) while i < dsig.NumSignatures : # Select the Nth signature by setting the Selector property. dsig.Selector = i bVerifyReferenceDigests = True bVerified = dsig.VerifySignature(bVerifyReferenceDigests) print("Signature " + str(i + 1) + " verified = " + str(bVerified)) # Get the certificates embedded in this signature. saCerts.Clear() success = dsig.GetCerts(saCerts) if (success == True): j = 0 while j < saCerts.Count : success = cert.LoadFromBase64(saCerts.GetString(j)) if (success == True): print(" " + cert.SubjectDN) j = j + 1 i = i + 1 |
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