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wincertstore provides an interface to access Windows’ CA and CRL certificates. It uses ctypes and Windows’s sytem cert store API through crypt32.dll.

Example

import wincertstore
for storename in ("CA", "ROOT"):
    with wincertstore.CertSystemStore(storename) as store:
        for cert in store.itercerts(usage=wincertstore.SERVER_AUTH):
            print(cert.get_pem().decode("ascii"))
            print(cert.get_name())
            print(cert.enhanced_keyusage_names())

SERVER_AUTH is the default enhanced key usage. In order to get all certificates for any usage, use None. The module offers more OIDs like CLIENT_AUTH, too.

For Python versions without the with statement:

for storename in ("CA", "ROOT"):
    store = wincertstore.CertSystemStore(storename)
    try:
        for cert in store.itercerts():
            print(cert.get_pem().decode("ascii")
    finally:
        store.close()

See CertOpenSystemStore

CertFile helper:

import wincertstore
import atexit
import ssl

certfile = wincertstore.CertFile()
certfile.addstore("CA")
certfile.addstore("ROOT")
atexit.register(certfile.close) # cleanup and remove files on shutdown)

ssl_sock = ssl.wrap_socket(sock,
                           ca_certs=certfile.name,
                           cert_reqs=ssl.CERT_REQUIRED)

Requirements

License

Copyright (c) 2013, 2014 by Christian Heimes <christian@python.org>

Licensed to PSF under a Contributor Agreement.

See http://www.python.org/psf/license for licensing details.

Acknowledgements

http://fixunix.com/openssl/254866-re-can-openssl-use-windows-certificate-store.html

http://bugs.python.org/issue17134

References

ChangeLog

wincertstore 0.2

Release date: 26-Feb-2013

  • By default CertSystemStore.itercerts() is now limited to return only certs that are suitable for SERVER_AUTH – that is to validate a TLS/SSL’s server cert from the perspective of a client.

  • Add CERT_CONTEXT.get_name() to get a human readable name of a certificate.

  • Add CERT_CONTEXT.enhanced_keyusage() to get enhanced key usage and trust settings from registry. The method returns either True or a frozenset of OIDs. True means that the certificate is valid for any purpose.

  • CERT_CONTEXT.enhanced_keyusage_names() maps OIDs to human readable names.

  • Add commin OIDs for enhanced key usages like SERVER_AUTH and CLIENT_AUTH.

  • Add support for universal wheels.

  • Add tox for testing Python 2.6 to 3.3. Python 2.4 and 2.5 are tested manually.

  • Use pypi.python.org:443 for TLS tests.

wincertstore 0.1

Release date: 22-Mar-2013

  • Initial release

Release files for wincertstore 0.2.1

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