title: Tiny and fast ASN.1 decoder in Python

author: Jens Getreu

asn1tinydecoder.py is a simple and fast ASN.1 decoder
without external libraries designed to parse large files.

A widely used library for encoding and decoding ASN1 in python is
Pyasn1. The implementation covers many aspects
of ASN1, but the API is very complex and hard to learn. Furthermore Pyasn1 is
not designed to parse large files. This why I wrote this tiny ASN.1 decoder.
It’s design goal was to be as fast as possible.

A practical application can be found in
search_serial_in_large_CRL.py:
This show case program creates an index allowing fast search in big ASN.1 data
structures.

The source code is hosted on
Gitlab.