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x5092json Utility

Project description


Provides a parser and JSON serializer for x509 certificates.

This tool can be used to creating a large database of analyzed certificates. Provides a command-line tool as well as an importable module. Over 400 Million certificates parsed so far.


PyCA-Cryptography ( provides a full set of cryptographic operations for Python programmers, but the focus of that library is on safety and correctness. For that reason, many certificates which one finds "in the wild" are not intializable as cryptography objects out-of-the-box. The x5092json package takes the safety belts off of cyrptography to provide a parser which is robust to the nonsense which one finds when processing the X509 certificates deployed in the wilds of the Internet.


Requires Python3. Tested against Python3.5, 3.6, 3.7. May work against earlier Py3Ks.

From PyPI:

$ pip3 install x5092json

From source :

$ git clone


Can be used as a command line tool:

$ cat mycert.pem | x5092json

For example, the above invocation teads a PEM formatted x509 Certificate from STDIN by default, the JSON document is printed on STDOUT.

Can also be imported as a module within a python program.

import x5092json

# load a pem file from the filesystem
f = open('mycert.pem')
cert = x5092json.load_certificate(f)

See the manual for more usage examples and options.


Joshua Crowgey

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x5092json-1.0.2.tar.gz (12.5 kB view hashes)

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