(Chilkat2-Python) Get the Server Certificate, Certificate Chain, and Root CA Certificate

Demonstrates how to get the HTTP server certificate, its certificate chain, and the root CA certificate.

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

Chilkat2 Python Downloads install with pip pip3 install chilkat2 or download... Python Module for Windows, Linux, Alpine Linux, MacOS

import sys
import chilkat2

success = False

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

http = chilkat2.Http()

# We're getting the SSL/TLS certificate, so make sure to connect to the SSL/TLS port (443).
sslCert = chilkat2.Cert()
success = http.GetServerCert("apple.com",443,sslCert)
if (success == False):
    print(http.LastErrorText)
    sys.exit()

certChain = chilkat2.CertChain()
success = sslCert.BuildCertChain(certChain)
if (success == False):
    print(sslCert.LastErrorText)
    sys.exit()

cert = chilkat2.Cert()
i = 0
numCerts = certChain.NumCerts
while i < numCerts :
    certChain.CertAt(i,cert)
    print("SubjectDN " + str(i) + ": " + cert.SubjectDN)
    print("IssuerDN " + str(i) + ": " + cert.IssuerDN)
    i = i + 1

# If the certificate chain reaches the root CA cert, then the last cert in the chain
# is the root CA cert.
if (certChain.ReachesRoot == True):
    caCert = chilkat2.Cert()
    certChain.CertAt(numCerts - 1,caCert)
    print("CA Root Cert: " + caCert.SubjectDN)