(CkPython) Transition from Crypt2.GetSignerCertChain to Crypt2.LastSignerCert

Provides instructions for replacing deprecated GetSignerCertChain method calls with LastSignerCert.

Note: This example requires Chilkat v11.0.0 or greater.

Chilkat Python Downloads install with pip pip3 install chilkat or download... Python Module for Windows, MacOS, Linux, Alpine Linux

import sys
import chilkat

crypt2 = chilkat.CkCrypt2()

# ...
# ...
index = 0

# ------------------------------------------------------------------------
# The GetSignerCertChain method is deprecated:

# certchainObj is a CkCertChain
certchainObj = crypt2.GetSignerCertChain(index)
if (crypt2.get_LastMethodSuccess() == False):
    print(crypt2.lastErrorText())
    sys.exit()

# ...
# ...

# ------------------------------------------------------------------------
# Do the equivalent using LastSignerCert, and then get the certificate chain from the cert.
# Your application creates a new, empty Cert object which is passed 
# in the last argument and filled upon success.

signerCert = chilkat.CkCert()
success = crypt2.LastSignerCert(index,signerCert)
if (success == False):
    print(crypt2.lastErrorText())
    sys.exit()

certChain = chilkat.CkCertChain()
success = signerCert.BuildCertChain(certChain)
if (success == False):
    print(signerCert.lastErrorText())
    sys.exit()