SecureDrop Wordlist Rainbow Table Math

wordlist_math.py

#!/usr/bin/env python

import sys

wordlist_filename = sys.argv[1]

words = []
with open(wordlist_filename) as wl_fp:
	for line in wl_fp:
		words.append(line.strip())

num_words = len(words)
print "%s words in wordlist" % num_words
num_possible_passphrases = num_words**8
print "%s possible 8-word passphrases" % num_possible_passphrases

word_length_sum = 0
for word in words:
	word_length_sum += len(word)

avg_word_len = float(word_length_sum) / num_words
print "%s average word length" % avg_word_len
avg_passphrase_len = avg_word_len * 8 + 7 # +7 for spaces
print "%s average passphrase length" % (avg_passphrase_len)

rainbow_table_size = avg_passphrase_len * num_possible_passphrases
print "%s bytes size of rainbow table" % rainbow_table_size
print "%s (in MB)" % (float(rainbow_table_size) / (1024**2))
print "%s (in GB)" % (float(rainbow_table_size) / (1024**3))
print "%s (in TB)" % (float(rainbow_table_size) / (1024**4))
print "%s (in PB)" % (float(rainbow_table_size) / (1024**5))