COSE sign1/verify1 on OpenSSL

Used purely in research purposes, not intended for production use (yet).

How-to

Targeting Azure Linux 4.0 with OpenSSL 3.5, to enable PQC.

Currently developed on AL 3.0, CI on a cheap Ubuntu image, with optional OpenSSL 3.5 build if needed (label-triggered).

How to test for PQC

Check CI workflows for more details.

• Check scripts/setup-openssl.sh for how to build OpenSSL from source.
• Set env (or prepend before cargo):

  export OPENSSL_INCLUDE_DIR="/path/to/openssl/include"
  export OPENSSL_LIB_DIR="/path/to/openssl"
  export LD_PRELOAD="/path/to/openssl/libcrypto.so:/path/to/openssl/libssl.so"

• cargo test --features pqc