use as something like env OPENSC_CONF=$PWD/vsmartcard/npa/opensc.conf opensc-tool --name
sm_transmit_apdu is obsolete. libnpa and OpenSC can be used in parallel now. libnpa modifies OpenSC's card handle to add SM on the fly to any OpenSC command. This, for example, allows PKCS#XX commands in a SM channel established by libnpa.