How to work with CBOR and CDDL

index.md

How to work with CBOR and CDDL

Helpful pages

• https://wasser.liebechaos.org/ - Convert CBOR to JSON to inspect it and validate it via CDDL schema
• https://cbor.me/ - Insert hex-encoded CBOR data in the right area to get the diagnostic output in the left or vice versa
• https://cbor.nemo157.com/ - Similar page with nicer UI
• https://cddl.anweiss.tech/ - Check your CDDL format

Tools

hew crate

• Useful tool to convert hex-encoded CBOR into binary data: https://github.com/nsmryan/hew via hew -i hex-cbor.cbor -o cbor.bin -m bin

cddl gem

• Install via gem install cddl
• Run via cddl ./spec.cddl validate ./test.cbor (only works when CBOR is represented in binary format, use hew above)
• cddl ./spec.cddl generate <n> generate test data based on schema,same for JSON: cddl ./spec.cddl json-generate <n>

cbor-diag gem

• Install via gem install cbor-diag

cddl crate

• Run via cddl validate [FLAGS] --cddl <CDDL> [FILE]...