client.crt / client.key

Conan support client TLS certificates. Create a client.crt with the client certificate in the Conan home directory (default ~/.conan) and a client.key with the private key.

You could also create only the client.crt file containing both the certificate and the private key concatenated.

Alternatively, you can define a path to those files in whichever location using the client_cert_path and client_cert_key_path configuration entries in the conan.conf.