code.delx.au - monosys/blob - bin/passphrasegen

   1 #!/usr/bin/env python3
   2
   3 import math
   4 import random
   5 import os
   6
   7 words_filename = os.environ.get("WORDS", "/usr/share/dict/words")
   8 num_words = 5
   9 max_word_len = 8
  10 min_word_len = 3
  11
  12 words = open(words_filename)
  13 words = [word.strip().lower() for word in words]
  14 words = [word for word in words if word.isalpha() and min_word_len <= len(word) <= max_word_len]
  15 random_words = [random.choice(words) for _ in range(num_words)]
  16 entropy_words = num_words * math.log(len(words)) / math.log(2)
  17
  18 max_number = 100
  19 min_number = 10
  20 random_number = random.randint(min_number, max_number)
  21 entropy_number = math.log(max_number - min_number) / math.log(2)
  22
  23 print("Entropy:", math.floor(entropy_words + entropy_number))
  24 print("Passphrase:", " ".join(random_words + [str(random_number)]))