vlm/asn1c

Health v2 · maintenance only

Adoption not part of the score

1171 stars · 620 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

asn1c is an open-source ASN.1 to C compiler that generates C/C++-compatible source code from ASN.1 module files. The generated code serializes native C structures to and from BER, OER, PER, and XER encoded data formats.

Use cases

• compile ASN.1 specifications into C code
• encode and decode X.509 certificates in BER/DER
• implement cellular network signaling protocols
• parse ASN.1-based protocol messages in C
• generate serializers for PER-encoded data
• work with XER XML encodings of ASN.1 types

When to choose

• you need to work with ASN.1-defined formats like X.509, LTE/3GPP signaling, or ITS communications
• you want C code generation from ASN.1 modules with BER/PER/XER support
• you need the most feature-complete open-source ASN.1 compiler

When to avoid

• you need CER or APER encoding support, which is not implemented
• you need a complete implementation of the entire ASN.1 standard family
• you work in a language other than C/C++

Facets

cli-tool · maturity stable

compiler serialization parser developer-tools networking security windows cross-platform cli c asn1 ber der per xer oer code-generator x509 telecom code-generation telecommunications linux macos

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