asn1c ☆

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Description:
Compile ASN.1 specifications into C source code

Type: Formula | Latest Version: 0.9.28@0 | Tracked Since: Dec 17, 2025

Links: Homepage | formulae.brew.sh

Category: Developer tools

Tags: asn1 compiler c protocol telecom

Install: brew install asn1c

About:
asn1c is an open-source compiler that translates Abstract Syntax Notation One (ASN.1) specifications into readable C source code. It supports multiple ASN.1 encoding rules, including BER, DER, and PER, facilitating the development of interoperable network protocols. This tool is essential for developers implementing standards defined by telecommunications and aviation authorities.

Key Features:

Generates C structures and encoding/decoding functions
Supports BER, DER, and PER encoding rules
Produces human-readable and debuggable code
Compliant with X.680-X.693 standards

Use Cases:

Implementing 3GPP mobile network protocols (e.g., LTE, 5G)
Developing aviation communication systems (e.g., ADS-B)
Creating secure cryptographic modules requiring ASN.1 parsing

Alternatives:

pyasn1 – Python-based library for ASN.1 processing; slower than C but easier for rapid prototyping.
asn1tools – Python-based compiler supporting multiple formats; useful for testing and validation.

License: BSD-2-Clause

Bottles available for: arm64_tahoe, arm64_sequoia, arm64_sonoma, arm64_ventura, arm64_monterey, arm64_big_sur, sonoma, ventura, monterey, big_sur, catalina, arm64_linux, x86_64_linux

Version History

Detected	Version	Rev	Change	Commit
Sep 13, 2025 9:04am		0	VERSION_BUMP	cb4110c4