Python-ASN1 is a simple ASN.1 encoder and decoder for Python 2.6+ and 3.3+.
Features
Support BER (parser) and DER (parser and generator) encoding
100% python, compatible with version 2.6, 2.7, 3.3 and higher
Can be integrated by just including a file into your project
Dependencies
Python-ASN1 relies on Python-Future for Python 2 and 3 compatibility. To install Python-Future:
pip install futureHow to install Python-asn1
Install from PyPi with the following:
pip install asn1or download the repository from GitHub and install with the following:
python setup.py installYou can also simply include asn1.py into your project.
How to use Python-asn1
*Note: You can find an example in the examples directory in the repository.*
Encoding
If you want to encode data and retrieve its DER-encoded representation, use code such as:
import asn1
encoder = asn1.Encoder()
encoder.start()
encoder.write('1.2.3', asn1.ObjectIdentifier)
encoded_bytes = encoder.output()Decoding
If you want to decode ASN.1 from DER or BER encoded bytes, use code such as:
import asn1
decoder = asn1.Decoder()
decoder.start(encoded_bytes)
tag, value = decoder.read()Documentation
The complete documentation is available on Read The Docs:
License
Python-ASN1 is free software that is made available under the MIT license. Consult the file LICENSE that is distributed together with this file for the exact licensing terms.
Copyright
The following people have contributed to Python-ASN1. Collectively they own the copyright of this software.
Geert Jansen (geert@boskant.nl): original implementation.
Sebastien Andrivet (sebastien@andrivet.com)
Changelog
2.0.0b1 (2016-12-15)
First public release by Sebastien Andrivet
Support both python 2 and 3 (with Python-Future)
All strings are now in unicode
Add more ASN.1 tags (like PrintableString)
Fix errors in the example (dump.py)
Code reorganization
0.9 (2011-05-18)
Initial public release by Geert Jansen
1 maintainer
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