asn1tools

asn1tools is a Python package for ASN.1 parsing, encoding, and decoding. It provides functionality to compile ASN.1 specifications and then encode and decode data using various encoding rules such as Basic Encoding Rules (BER), Distinguished Encoding Rules (DER), Packed Encoding Rules (PER), Unaligned Packed Encoding Rules (UPER), and XML Encoding Rules (XER), among others. The library is currently at version 0.167.0 and is actively maintained with frequent releases addressing bug fixes and performance improvements.