asn1crypto - Python ASN.1 library with a focus on performance and a pythonic API

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A fast, pure Python library for parsing and serializing ASN.1 structures. Python has long had the pyasn1 and pyasn1_modules available for parsing and serializing ASN.1 structures. While the project does include a comprehensive set of tools for parsing and serializing, the performance of the library can be very poor, especially when dealing with bit fields and parsing large structures such as CRLs.

https://github.com/wbond/asn1crypto

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