diff options
| -rw-r--r-- | pySim/transport/__init__.py | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/pySim/transport/__init__.py b/pySim/transport/__init__.py index dd04bba..0a71117 100644 --- a/pySim/transport/__init__.py +++ b/pySim/transport/__init__.py @@ -77,12 +77,23 @@ class LinkBase(object): """send_apdu_checksw(pdu,sw): Sends an APDU and check returned SW pdu : string of hexadecimal characters (ex. "A0A40000023F00") - sw : string of 4 hexadecimal characters (ex. "9000") + sw : string of 4 hexadecimal characters (ex. "9000"). The + user may mask out certain digits using a '?' to add some + ambiguity if needed. return : tuple(data, sw), where data : string (in hex) of returned data (ex. "074F4EFFFF") sw : string (in hex) of status word (ex. "9000") """ rv = self.send_apdu(pdu) - if sw.lower() != rv[1]: + + # Create a masked version of the returned status word + sw_masked = "" + for i in range(0, 4): + if sw.lower()[i] == '?': + sw_masked = sw_masked + '?' + else: + sw_masked = sw_masked + rv[1][i].lower() + + if sw.lower() != sw_masked: raise RuntimeError("SW match failed ! Expected %s and got %s." % (sw.lower(), rv[1])) return rv |