rsa_setup_md
&& !rsa_setup_md(prsactx, mdname, prsactx->propq, desc))
if (!rsa_setup_md(prsactx, pmdname, pmdprops, "RSA Sign Set Ctx"))
if (!rsa_setup_md(prsactx, mdname, NULL, desc))
|| !rsa_setup_md(prsactx, mdname, prsactx->propq, desc)