text: import binascii
  
  from cryptography.hazmat.backends.openssl.backend import backend
  from cryptography.hazmat.primitives.ciphers import algorithms, base, modes
  
  
  def encrypt(mode, key, iv, plaintext):
      cipher = base.Cipher(
          algorithms.IDEA(binascii.unhexlify(key)),
          mode(binascii.unhexlify(iv)),
          backend
      )
      encryptor = cipher.encryptor()
      ct = encryptor.update(binascii.unhexlify(plaintext))
      ct += encryptor.finalize()
      return binascii.hexlify(ct)
  
  
  def build_vectors(mode, filename):
      with open(filename, "r") as f:
          vector_file = f.read().splitlines()
  
      count = 0
      output = []
      key = None
      iv = None
      plaintext = None
      for line in vector_file:
          line = line.strip()
          if line.startswith("KEY"):
              if count != 0:
                  output.append("CIPHERTEXT = {0}".format(
                      encrypt(mode, key, iv, plaintext))
                  )
              output.append("\nCOUNT = {0}".format(count))
              count += 1
              name, key = line.split(" = ")
              output.append("KEY = {0}".format(key))
          elif line.startswith("IV"):
              name, iv = line.split(" = ")
              iv = iv[0:16]
              output.append("IV = {0}".format(iv))
          elif line.startswith("PLAINTEXT"):
              name, plaintext = line.split(" = ")
              output.append("PLAINTEXT = {0}".format(plaintext))
  
      output.append("CIPHERTEXT = {0}".format(encrypt(mode, key, iv, plaintext)))
      return "\n".join(output)
  
  
  def write_file(data, filename):
      with open(filename, "w") as f:
          f.write(data)
  
  
  CBC_PATH = "tests/hazmat/primitives/vectors/ciphers/AES/CBC/CBCMMT128.rsp"
  write_file(build_vectors(modes.CBC, CBC_PATH), "idea-cbc.txt")
  OFB_PATH = "tests/hazmat/primitives/vectors/ciphers/AES/OFB/OFBMMT128.rsp"
  write_file(build_vectors(modes.OFB, OFB_PATH), "idea-ofb.txt")
  CFB_PATH = "tests/hazmat/primitives/vectors/ciphers/AES/CFB/CFB128MMT128.rsp"
  write_file(build_vectors(modes.CFB, CFB_PATH), "idea-cfb.txt")
  