This is a small utility to help generate test cases for github.com/veraison/corim. It compiles YAML documents into CBOR. In general YAML structures are converted into corresponding CBOR structures with two exceptions:
- A map with exactly two keys, "tag" and "value", is converted into a CBOR tag, where the value of "tag" is used as the tag number (it must be an int), and the value of "value" is the tagged structure.
- A map with exactly one key, "encodedCBOR" is converted into a binary string, the contents of which is the CBOR-encoded structure corresponding to that key.
This tool is almost compatible with the output of cbor2yaml.rb from
cbor-diag, with the exception that the
application-specific !binary YAML tags generated by the that tool need to be
replaced with the global !!binary tags in order to work.
For example, to generate input YAML for this tool from an existing CBOR document, you can:
cbor2yaml.rb /path/to/document.cbor | sed 's/!binary/!!binary/g' > document.yaml
(assuming you have cbor-diag tools installed).
Note
While this can be used as a generic tool for compiling YAML into CBOR, it was
specifically designed to help generate test cases for corim library, and
its general usefulness outside that was not a consideration.
go install github.com/setrofim/gen-testcase@latest
gen-testcase samples/corim-full.yaml -o /tmp/unsigned-corim.cbor
see output of gen-testcase -h for all options.
In addition to generating a CBOR document, this tool can optionally wrap it in
a COSE_Sign1
message. This is done by specifying a signing key with -s/--signing-key
option. The key must be in JWK
format. The content type header is set to application/rim+cbor, but an
alternative may be specified with -c/--content-type option. Finally,
additional arbitrary data maybe encoded and included in the protected header
under the label 8 with -m/--meta option.
gen-testcase -s samples/ec-p256.jwk -m samples/meta.yaml \
samples/corim.yaml -o /tmp/signed-corim.cbor