Adding unwrap(), to decrypt and verify secure APDU.

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

src/hsm/sc_hsm.c

@@ -1963,6 +1963,7 @@ static const cmd_t cmds[] = {
 };
 
 int sc_hsm_process_apdu() {
+    int r = sm_unwrap();
     for (const cmd_t *cmd = cmds; cmd->ins != 0x00; cmd++) {
         if (cmd->ins == INS(apdu))
             return cmd->cmd_handler();