Rust ASN.1 Codecs Benchmark

This project aims to benchmark existing ASN1 PER (Packed Encoding Rules) codecs in Rust.

Codecs used in comparision

The project currently includes the following UPER codecs:

1. rasn v0.28
2. asn1-codecs v0.7.2
3. asn1rs v0.3.1

Benchmark Results

System configuration: Ubuntu 24.04, Rustc: 1.92.0, AMD Ryzen 5850U 32GB RAM.

Encoding and decoding sample telecom protocol message

For more details regarding ASN1 definition, refer to telco_sample.asn

This benchmark uses a generic telecom-inspired protocol with realistic features (~377 bytes encoded):

• CHOICE types (PDU with Request variant)
• ENUMERATED types (PriorityLevel, RecordType)
• OPTIONAL fields (timestamps, addresses, metadata)
• Variable-length SEQUENCE-OF (20 records)
• OCTET STRING fields (identifiers, payloads)
• Nested structures with BOOLEAN and INTEGER fields

Codec	Encoding (µs)	Decoding (µs)
rasn	37.1	6.6
asn1-codecs	5.7	4.9
asn1rs	2.5	2.9

Encoding and decoding 3D array (10×10×10 Color structs, 5 bytes each)

For more details regarding ASN1 definition, refer to sample.asn

Codec	Encoding (µs)	Decoding (µs)
rasn	958	103
asn1-codecs	180	49
asn1rs	69	74

Encoding flat SEQUENCE-OF 1000 integers (u64)

Codec	Encoding (µs)
rasn	459
asn1-codecs	52
asn1rs	37

Usage

To run the benchmarks, follow these steps:

cargo build
cargo bench

Contributing

Contributions are welcome! If you have any suggestions, bug reports, or feature requests, please open an issue or submit a pull request.

License

This project is licensed under the Apache Licence, version 2.0.