def command_JE(cmdObj):
""" Translate a PIN from encryption under a ZPK to encryption under the LMK. """
""" Command Pattern:
request: Message header + 'JE' + ZPK + PIN Block + PIN Block Format Code + Account Number + End message delimiter + Message Trailer
response: Message header + 'JF' + Error code + PIN + End Message delimiter + Message Trailer
"""
respObj = CommandObj()
ZPK = decryptKeyUnderLMK('ZPK', unhexlify(cmdObj.ZPK.value),
cmdObj.ZPK.scheme)
zpk = KeyScheme(ZPK)
pinblock = zpk.decrypt(unhexlify(cmdObj.PINBlock.value))
(clearPIN, rslt) = extrackPINFromPINBlock(pinblock,
cmdObj.AccountNumber.value,
cmdObj.PINBlockFormatCode.value)
if rslt != '00':
respObj.ResponseCode = DataVariable(rslt)
return respObj
print "clearPIN=", clearPIN
if (len(clearPIN) < 4) or (len(clearPIN) > 12):
respObj.ResponseCode = DataVariable('24')
return respObj
cipherPIN = encryptPINUnderLMK(clearPIN, cmdObj.AccountNumber.value)
respObj = CommandObj()
respObj.ResponseCode = DataVariable('00')
respObj.PIN = DataVariable(cipherPIN)
return respObj
def command_BA(cmdObj):
""" Encrypt a clear text PIN. """
""" Command Pattern:
request: Message header + 'NG' + PIN + Account Number + End message delimiter + Message Trailer
response: Message header + 'NH' + Error code + PIN + End Message delimiter + Message Trailer
"""
PIN = encryptPINUnderLMK(cmdObj.PIN.value, cmdObj.AccountNumber.value)
respObj = CommandObj()
respObj.ResponseCode = DataVariable('00')
respObj.PIN = DataVariable(PIN)
return respObj
def command_NG(cmdObj):
""" Decrypted an encrypted PIN and return a reference number. """
""" Command Pattern:
request: Message header + 'NG' + Account Number + PIN + End message delimiter + Message Trailer
response: Message header + 'NH' + Error code + PIN + End Message delimiter + Message Trailer
"""
PIN = decryptPINUnderLMK(cmdObj.PIN.value, cmdObj.AccountNumber.value)
respObj = CommandObj()
respObj.ResponseCode = DataVariable('00')
respObj.PIN = DataVariable(PIN)
return respObj
def command_EE(cmdObj):
""" Derive a PIN Using IBM Method """
""" Command Pattern:
request: Message header + 'EE' + PVK + Offset + Check length + Account Number + Decimalization Table + PIN Validation data + End message delimiter + Message Trailer
response: Message header + 'EF' + Error code + PIN + End Message delimiter + Message Trailer
"""
PVK = decryptKeyUnderLMK('PVK', unhexlify(cmdObj.PVK.value), cmdObj.PVK.scheme)
PIN = genPINUsingIBMMetheod(PVK, cmdObj.AccountNumber.value, cmdObj.PINValidationData.value, cmdObj.DecimalizationTable.value)
finalPIN = genFinalPIN(PIN, cmdObj.Offset.value)
cypherPIN = encryptPINUnderLMK(finalPIN, cmdObj.AccountNumber.value)
respObj = CommandObj()
respObj.ResponseCode = DataVariable('00')
respObj.PIN = DataVariable(cypherPIN)
return respObj
def command_JC(cmdObj):
""" Translate a PIN from encryption under a TPK to encryption under the LMK. """
""" Command Pattern:
request: Message header + 'JC' + TPK + PIN Block + PIN Block Format Code + Account Number + End message delimiter + Message Trailer
response: Message header + 'JD' + Error code + PIN + End Message delimiter + Message Trailer
"""
TPK = decryptKeyUnderLMK('TPK', unhexlify(cmdObj.TPK.value), cmdObj.TPK.scheme)
tpk = KeyScheme(TPK)
pinblock = tpk.decrypt(unhexlify(cmdObj.PINBlock.value))
clearPIN = extrackPINFromPINBlock(pinblock, cmdObj.AccountNumber.value, cmdObj.PINBlockFormatCode.value)
cipherPIN = encryptPINUnderLMK(clearPIN, cmdObj.AccountNumber.value)
respObj = CommandObj()
respObj.ResponseCode = DataVariable('00')
respObj.PIN = DataVariable(cipherPIN)
return respObj
