Add new "GRCard" module for the (HZCOS based?) grcard.cn SIM

This sim is re-programmable and we add commands for setting Ki, PIN,
A3/A8 algorithm, ...

cards/grcard_sim_card.py

@@ -0,0 +1,56 @@
+import utils
+from gsm_card import *
+import building_blocks
+
+class GRCard_Card(GSM_Card):
+    DRIVER_NAME = ["GRCard"]
+    ATRS = [ 
+        ("3b991800118822334455667760", None),
+    ]
+
+    DF_ALGO = "\x27\x00"
+    EF_ALGO = "\x6f\x70"
+
+    APDU_ERASE_CARD = C_APDU(CLA=0x80, INS=0xFE, data="123456\x00\x00\x13\x01\xFF\x00\x00\x00\x00\x00\x00\x00\x00\xEA")
+    APDU_SET_KI = C_APDU(CLA=0x80, INS=0xD4, P1=0x02)
+    APDU_SET_PINPUK = C_APDU(CLA=0x80, INS=0xD4)
+
+    def cmd_set_algo(self, algo):
+	"""Set the COMP128 version to be used as A3/A8 algorithm in the card."""
+	self.select_file(0, 0, self.DF_ALGO)
+	self.select_file(0, 0, self.EF_ALGO)
+	self.cmd_upd_binary(algo)
+
+    def cmd_erase_card(self):
+	"""Erase the entire card including all DF and EF."""
+	self.send_apdu(self.APDU_ERASE_CARD)
+
+    def cmd_set_ki(self, ki):
+	"""Set the Ki to be used by the A3/A8 algorithm."""
+        ki_bin = binascii.a2b_hex("".join(ki.split()))
+	apdu = C_APDU(self.APDU_SET_KI, data = ki_bin)
+	self.send_apdu(apdu)
+
+    def set_pin_puk(self, pin_num, pin, puk):
+	data_bin = self.pad(pin, 8) + self.pad(puk, 8)
+	apdu = C_APDU(self.APDU_SET_PINPUK, P2 = pin_num, data = data_bin)
+	self.send_apdu(apdu)
+
+    def cmd_set_pin_puk(self, pin_num, pin, puk):
+	"""Set the PIN + PUK (1 or 2)."""
+	self.set_pin_puk(int(pin_num, 0), pin, puk)
+	
+    def pad(self, data, padded_len):
+        topad = padded_len - len(data)
+	if topad <= 0:
+	    return data
+        return data + ("\xFF" * topad)
+ 
+    COMMANDS = {}
+    COMMANDS.update(GSM_Card.COMMANDS)
+    COMMANDS.update({
+	"grcard_set_algo" : cmd_set_algo,
+	"grcard_erase_card" : cmd_erase_card,
+	"grcard_set_ki" : cmd_set_ki,
+        "grcard_set_pin_puk" : cmd_set_pin_puk,
+    })