This assembly provides support for reading and writing values encoded under the ITU X.690 Basic Encoding Rules (BER), Canonical Encoding Rules (CER), and Distinguished Encoding Rules (DER) encodings of data types defined in ITU X.680 Abstract Syntax Notation One (ASN.1).
The primary types in this assembly are AsnReader and AsnWriter.
Documentation can be found at https://learn.microsoft.com/dotnet/api/system.formats.asn1
- We consider new features, new APIs and performance changes
- We consider PRs that target this library for new source code analyzers
The library is shipped as part of the .NET shared framework and as a NuGet package.