Json Web Keys again

[Angus Robertson - Magenta Systems Ltd]

Google has started using RSA-PSS private keys for Json Web Keys.  

I create an RSA JWK using EVP_PKEY_get1_RSA and RSA_get0_key, but this
does not work for RSA-PSS.  EVP_PKEY_print_private does work OK, but
parsing data from the output is messy. 

EVP_PKEY_set_alias_type seemed worth a try, but does not set the
base_id.  

Are there any other workarounds?  Is RSA-PSS fully supported in 3.0?

Angus