kmf_create_cert_file
rv = kmf_create_cert_file(&certdata, fmt, certfile);
rv = kmf_create_cert_file(&outcert, fmt, certfile);
extern KMF_RETURN kmf_create_cert_file(const KMF_DATA *, KMF_ENCODE_FORMAT,
ret = kmf_create_cert_file(user_cert, KMF_FORMAT_ASN1,
ret = kmf_create_cert_file(cert, format, fullpath);