gistfile1.py

"""
Generate a random token.
"""
# After reading Zooko's, I was like oops, I'm an idiot.
# I should probably use his, but anyway here's a fix: 
# correct cryptogen.sample() to cryptogen.choice().

import math
from random import SystemRandom

cryptogen = SystemRandom()

def gen_token(nbits, alphabet, sep):
    assert len(set(alphabet)) == len(alphabet)
    length = int(math.ceil(nbits * math.log(2, len(alphabet))))
    return sep.join(cryptogen.choice(alphabet) for _ in range(length))

## nbits = 83 # 95
## alphabet = open('/home/darius/bin/words2').read().splitlines()
## print gen_token(nbits, alphabet, '.')
#. unclear.chew.latex.bush.cavern.term.bangs

## import string
## alphabet = r'0123456789-/\,.=' + string.ascii_lowercase  # + r"[]'"
## nbits = 80
## print gen_token(nbits, alphabet, '')
#. rsz8pvwi.qxmak\