python script for to decode track data encrypted with DataKey

Question

I am having troubling with generating IPEK from BDK and KSN from python, after that i want to generate dataKey from kSN and IPEK. Is there any way to do this two functions using python? Wanted Scenario below

def decryptinfo(ksn, data):
  BDK = unhexlify("0123456789ABCDEFFEDCBA9876543210")
  ksn = unhexlify(ksn)
  IPEK = GenerateIPEK(ksn, BDK)
  DATAKEY = GetDataKey(ksn, IPEK)
  res = TDES_Dec(data, DATA_KEY)
  return hexlify(res)

def GetDataKey(ksn, ipek):
  key = GetDukptKey(ksn, ipek)
  key = bytearray(key)
  key[5] ^= 0xFF
  key[13] ^= 0xFF
 return str(key) 

I want to know is there any way to get GenerateIPEK(ksn, BDK) and GetDukptKey(ksn, ipek) from python..

Answer 1

he code provided in the GitHub repository you shared uses an older version of the pycryptodome library, and it seems to work with Python 2. If you are using Python 3, refer the example code

https://github.com/allen246/dukpt/blob/main/example.py