asn.1 parser in C/Python

Question

I am looking for a solution to parse asn.1 spec files and generate a decoder from those.

Ideally I would like to work with Python modules, but if nothing is available I

Answer 1

There is an ANTLR ASN.1 grammar; using ANTLR, you should be able to make an ASN.1 parser out of it. Generating code for pyasn1 is left as an exercise to the poster :-)