Use python to access a site with PKI security

Question

Use python to access a site with PKI security

11.6k views Asked by code base 5000 At 29 December 2024 at 10:29

I have a site that has PKI security enabled. Each client used either a card reader to load their certificate, or the certificate is installed in the IE certificate storage on their box.

So my question are:

How can I use either the card reader certificate or the certificate stored on the system to verify the system?
How do I pass the credentials onto the site to say, hey I'm me and I can access the service? They example can be using soft certificates. I can figure out the card reader part later.

I've been searching around, and I haven't come up with anything to help me in this situation. Django has a bunch of modules, but this isn't an option because I'm only concerned of the client side of things. I'm not creating a site to host the service. I need to just access these services.

I have this code working sort of. I just do not know how to handle the redirect I am getting:

import httplib
KEYFILE = r"C:\cert\my.key"
CERTFILE = r"c:\cert\my.pem"
HOSTNAME = 'machine.com'

conn = httplib.HTTPSConnection(
    HOSTNAME,
    key_file = KEYFILE,
    cert_file = CERTFILE
)

conn.putrequest('GET', '/arcgis/sharing/rest?f=json')
conn.endheaders()
response = conn.getresponse()
print response.read()

The result of all of this is:

<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<html><head>
<title>302 Found</title>
</head><body>
<h1>Found</h1>
<p>The document has moved <a href="https://machine.com/pki?https://machine.com/arcgis/sharing/rest%3f&amp;f=json">here</a>.</p>
</body></html>

Any help provided would be great!

Software specs: python 2.7.8, Windows 2012 R2

Original Q&A

There are 2 answers

Jaffer Wilson On 15 June 2015 at 05:52

Try this code

#!/usr/bin/env python

import httplib

CERTFILE = '/home/robr/mycert'
HOSTNAME = 'localhost'

conn = httplib.HTTPSConnection(
    HOSTNAME,
    key_file = CERTFILE,
    cert_file = CERTFILE
)
conn.putrequest('GET', '/ssltest/')
conn.endheaders()
response = conn.getresponse()
print response.read()

**code base 5000** · Accepted Answer · 2015-06-19 11:59:34

I created a PKI handler to handle the requests so I can use it work urllib2 library.

import httplib, urllib2

class HTTPSClientAuthHandler(urllib2.HTTPSHandler):

    def __init__(self, key, cert):
        urllib2.HTTPSHandler.__init__(self)
        self.key = key
        self.cert = cert
    def https_open(self, req):
        #Rather than pass in a reference to a connection class, we pass in
        # a reference to a function which, for all intents and purposes,
        # will behave as a constructor
        return self.do_open(self.getConnection, req)
    def getConnection(self, host, timeout=300):
        return  httplib.HTTPSConnection(host,
                                             key_file=self.key,
                                             cert_file=self.cert,
                                             timeout=timeout)

To use this, you will need to use a cookiejar with the handler.

from cookielib import CookieJar
cookiejar = CookieJay()
handlers = []
handlers.append(HTTPSClientAuthHandler(somekey, somecert))
handlers.append(urllib2.HTTPCookieProcessor(cookiejar))
opener = urllib2.build_opener(*handlers)
... do other urllib2 calls ....

Hope this helps everyone!

TechQA.

Use python to access a site with PKI security

There are 2 answers

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