Skip to main content

Python package for providing Mozilla's CA Bundle.

Project description

Certifi is a carefully curated collection of Root Certificates for validating the trustworthiness of SSL certificates while verifying the identity of TLS hosts. It has been extracted from the Requests project.

Installation

certifi is available on PyPI. Simply install it with pip:

$ pip install certifi

Usage

To reference the installed certificate authority (CA) bundle, you can use the built-in function:

>>> import certifi

>>> certifi.where()
'/usr/local/lib/python2.7/site-packages/certifi/cacert.pem'

Enjoy!

1024-bit Root Certificates

Browsers and certificate authorities have concluded that 1024-bit keys are unacceptably weak for certificates, particularly root certificates. For this reason, Mozilla has removed any weak (i.e. 1024-bit key) certificate from its bundle, replacing it with an equivalent strong (i.e. 2048-bit or greater key) certificate from the same CA. Because Mozilla removed these certificates from its bundle, certifi removed them as well.

Unfortunately, old versions of OpenSSL (less than 1.0.2) sometimes fail to validate certificate chains that use the strong roots. For this reason, if you fail to validate a certificate using the certifi.where() mechanism, you can intentionally re-add the 1024-bit roots back into your bundle by calling certifi.old_where() instead. This is not recommended in production: if at all possible you should upgrade to a newer OpenSSL. However, if you have no other option, this may work for you.

Project details


Release history Release notifications | RSS feed

Download files

Download the file for your platform. If you're not sure which to choose, learn more about installing packages.

Source Distribution

certifi-2016.2.28.tar.gz (364.0 kB view details)

Uploaded Source

Built Distribution

certifi-2016.2.28-py2.py3-none-any.whl (366.9 kB view details)

Uploaded Python 2Python 3

File details

Details for the file certifi-2016.2.28.tar.gz.

File metadata

  • Download URL: certifi-2016.2.28.tar.gz
  • Upload date:
  • Size: 364.0 kB
  • Tags: Source
  • Uploaded using Trusted Publishing? No

File hashes

Hashes for certifi-2016.2.28.tar.gz
Algorithm Hash digest
SHA256 5e8eccf95924658c97b990b50552addb64f55e1e3dfe4880456ac1f287dc79d0
MD5 5d672aa766e1f773c75cfeccd02d3650
BLAKE2b-256 5cf8f6c54727c74579c6bbe5926f5deb9677c5810a33e11da58d1a4e2d09d041

See more details on using hashes here.

File details

Details for the file certifi-2016.2.28-py2.py3-none-any.whl.

File metadata

File hashes

Hashes for certifi-2016.2.28-py2.py3-none-any.whl
Algorithm Hash digest
SHA256 75c33d546e0a732a4606749cbadcd81929f30d8b814061ca93cde49933dbb860
MD5 409448ee124f3159d912e4e155b034b0
BLAKE2b-256 db601ed0106bde7b14b363b15b17cc308aad93ba57d3582570f3ad7180ae0fae

See more details on using hashes here.

Supported by

AWS Cloud computing and Security Sponsor Datadog Monitoring Fastly CDN Google Download Analytics Pingdom Monitoring Sentry Error logging StatusPage Status page