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import utils, re, sys, getpass, struct
from iso_7816_4_card import *
class Postcard_Card(ISO_7816_4_Card):
DRIVER_NAME = "Postcard"
CLA = 0xbc
APDU_GET_RESPONSE = C_APDU(cla=CLA,ins=0xc0)
APDU_SELECT_FILE = C_APDU(cla=CLA,ins=0xa4)
APDU_READ_BINARY = C_APDU(cla=CLA,ins=0xb0,le=0x80)
ATRS = [
("3f65351002046c90..", None),
("3f65356402046c9040", None),
]
def _get_binary(self, offset, length):
command = C_APDU(self.APDU_READ_BINARY, p1 = offset >> 8, p2 = offset & 0xff, le = length)
result = self.send_apdu(command)
assert result.sw == self.SW_OK
return result.data
def _get_address(self, definition_data, offset):
return ((ord(definition_data[offset]) * 256 + ord(definition_data[offset+1])) >> 5) << 3
ZONE_ADDRESSES = [
("adl", 0x09C8),
("adt", 0x09CC),
("adc", 0x09D0),
("adm", 0x09D4),
("ad2", 0x09D8),
("ads", 0x09DC),
("ad1", 0x09E8),
]
def cmd_calculate_zone_addresses(self):
"Read the zone definitions and calculate the zone addresses"
READSTART = 0x09c0
definition_data = self._get_binary(READSTART, length=0x30)
result = {}
for name, offset in self.ZONE_ADDRESSES:
result[name] = self._get_address(definition_data, (offset - READSTART)>>1)
for name,_ in self.ZONE_ADDRESSES:
print "%s: %04x" % (name, result[name])
def cmd_read_identification_zone(self):
"Read the identification zone"
data = self._get_binary(0x0948, length=0x60)
chaine_initiale = binascii.b2a_hex(data[4:])
print "chaine initiale", chaine_initiale
#suppression_des_3 = re.sub(r'x', '3', re.sub(r'3', '', re.sub(r'33', "x", chaine_initiale) ) )
#suppression_des_3 = "".join(chaine_initiale.split("3")) + "0"
suppression_des_3 = []
still_there = True
for index,char in enumerate(chaine_initiale):
if still_there and index % 8 == 0:
if char == "3":
continue
else:
still_there = False
suppression_des_3.append(char)
suppression_des_3 = "".join(suppression_des_3)
print "suppression des 3", suppression_des_3
new_data = binascii.a2b_hex(suppression_des_3)
print utils.hexdump(new_data)
fields = [
(None, 2),
("card number", 19),
("usage code", 3),
("valid from", 4),
("language code", 3),
("valid till", 4),
("currency code", 3),
("denomination", 1),
("(unknown)", 3),
("card holder", 26*2)
]
print "Decoding:"
pos = 0
for name, length in fields:
value = suppression_des_3[pos:pos+length]
pos = pos+length
if name is None:
continue
print "\t%20s: %s" % (name, value)
print "\t%20s '%s'" % ("", binascii.a2b_hex(value))
def cmd_give_pin(self):
old = sys.modules["cards.generic_card"].DEBUG
try:
pin = getpass.getpass("Enter PIN: ")
if len(pin) != 4:
raise ValueError, "PIN must be 4 characters in length"
pinint = int(pin, 16)
pinint = (pinint << 14) | 0x3fff
data = struct.pack(">I", pinint)
sys.modules["cards.generic_card"].DEBUG = False
command = C_APDU(cla=0xBC, ins=0x20, data=data, le=0)
result = self.send_apdu(command)
finally:
sys.modules["cards.generic_card"].DEBUG = old
COMMANDS = {
"calculate_zone_addresses": cmd_calculate_zone_addresses,
"read_identification_zone": cmd_read_identification_zone,
"give_pin": cmd_give_pin,
}
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