hashword

#!/usr/bin/env python
# coding=utf-8
"""Produces a unique, secure password from a site name and a secure Master Passphrase."""

import hashlib

# for python3 change raw_input to input
print("""Enter the Site Name. If using the entire address, be aware that sites are
increasingly moving from http to https, which would alter the result.""")
site_name = raw_input('>> ')
print("""Enter your Master Passphrase. This needs to be very secure, in cases someone
knows/guesses you're using this. Diceware is recommended:
http://world.std.com/~reinhold/diceware.html""")
sekrit = raw_input('>> ')

combined_string = "%s~%s" % (site_name, sekrit)
md = hashlib.md5()
md.update(combined_string)
hex_string = md.hexdigest()

print("MD5 hash:\n%s" % hex_string)

# This grabs the last 16 (of 32) digits. Change the slice to grab different ones.
short_string = hex_string[-16:]
print("16 digit:\n%s" % short_string)

# This part both obsfucates that we're using hexidecimal numbers, and (nearly always) adds
# in some special characters for finicky sites
# change/rearrange the 'Y' part of each 'x':'Y' pair to mix things up (keep the quotes!)
# Note every nth number is changed to a special character, and every nth letter is uppercased
# or changed to a value outside the hexadecimal range (>a-f)
special_dict = {'0':'¢','1':'~','2':'!','3':'@','4':'#','5':'$','6':'%','7':'^','8':'&','9':'*'}
alpha_dict ={'a':'G','b':'L','c':'m','d':'t','e':'V','f':'x'}
pwd_list = []
# Making this number too high reduces the chances of a special character (which some sites require)
nth = 3
use_dict = True

for x in range(len(short_string)):
    i = short_string[x]
    if ((x+1) % nth != 0):
        pwd_list.append(i)
    elif i.isdigit():
        pwd_list.append(special_dict[i])
    else:
        if use_dict:
            pwd_list.append(alpha_dict[i])
        else:
            pwd_list.append(i.upper())
        use_dict = not use_dict
pwd_string = ''.join(pwd_list)

# We should end up with a decent password that's reproducible, unique, and secure
print("Obsfucated 16 digit:\n%s" % pwd_string)