Yubico and GnuPG interpretate the standard in different ways. While Yubico follows strictly the spec and expects the TAG encapsulating the output of GET_DATA, GnuPG expects consecutive DO in the response.

A possible workaround is to detect whether sub-DO are called (GnuPG) or management AID is called (Yubico).

Signed-off-by: Pol Henarejos <pol.henarejos@cttc.es>

src/openpgp/management.c

@@ -145,6 +145,7 @@ int man_process_apdu() {
     }
     for (const cmd_t *cmd = cmds; cmd->ins != 0x00; cmd++) {
         if (cmd->ins == INS(apdu)) {
+            is_gpg = false;
             int r = cmd->cmd_handler();
             return r;
         }