(Chilkat2-Python) Subject Alternative Name

Demonstrates the usage of the SubjectAlternativeName property to get the certificate SAN (subject alternative name) as XML.

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

import sys
import chilkat2

# Note: Not all certificates contain a Subject Alternative Name.
# If it does not, the SubjectAlternativeName property will contain the empty string.

cert = chilkat2.Cert()

success = cert.LoadFromFile("qa_data/certs/testIcpBrasil.cer")
if (success == False):
    print(cert.LastErrorText)
    sys.exit()

subjectAltNameXml = cert.SubjectAlternativeName

print(subjectAltNameXml)

# Here's a sample of the subjectAltNameXml:

# <?xml version="1.0" encoding="utf-8"?>
# <SubjectAltName>
#     <name type="oid" oid="2.16.76.1.3.4">...</name>
#     <name type="oid" oid="2.16.76.1.3.2">...</name>
#     <name type="oid" oid="2.16.76.1.3.3">...</name>
#     <name type="oid" oid="2.16.76.1.3.7">...</name>
#     <rfc822Name>...</rfc822Name>
# </SubjectAltName>

# The XML can be parsed like this:

xml = chilkat2.Xml()

xml.LoadXml(subjectAltNameXml)

i = 0
count_i = xml.NumChildrenHavingTag("name")
while i < count_i :
    xml.I = i
    oid = xml.ChilkatPath("name[i]|(oid)")
    name = xml.GetChildContent("name[i]")
    i = i + 1

rfc822Name = xml.GetChildContent("rfc822Name")