Hash strings using a number of different algorithms

sha.py

#!/usr/bin/env python

"""
Output hash for a string

If not string is specified, then prompt for one (good for passwords). By default
the script will use SHA1, but you can specify any of the following:

    --all (or -a)
    --base64 (or -b)
    --md5 (or -m)
    --sha1
    --sha256
    --sha512

The 'all' option will output all options.

Requires hashlib (python 2.5)
"""

import hashlib
import base64
from optparse import OptionParser

if __name__ == '__main__':
    parser = OptionParser()
    parser.add_option('--sha1', dest="sha1", action="store_true", default=False)
    parser.add_option('--sha256', dest="sha256", action="store_true", default=False)
    parser.add_option('--sha512', dest="sha512", action="store_true", default=False)
    parser.add_option('-m', '--md5', dest="md5", action="store_true", default=False)
    parser.add_option('-a', '--all', dest="all", action="store_true", default=False)
    parser.add_option('-b', '--base64', dest="base64", action="store_true", default=False)
    (options, args) = parser.parse_args()
    
    if len(args) == 0:
        tmp = raw_input('Text: ')
    else:
        tmp = ' '.join(args)

    all_options_false = True
    option_keys = vars(options)
    for option in option_keys.keys():
        if option_keys[option]:
            all_options_false = False
            break

    if options.base64 or options.all:
        s = base64.b64encode(tmp)
        print "base64:\t%s" % s
    if options.md5 or options.all:
        s = hashlib.md5(tmp)
        print "md5:\t%s" % s.hexdigest()
    if options.sha1 or options.all or all_options_false:
        s = hashlib.sha1(tmp)
        print "sha1:\t%s" % s.hexdigest()
    if options.sha256 or options.all:
        s = hashlib.sha256(tmp)
        print "sha256:\t%s" % s.hexdigest()
    if options.sha512 or options.all:
        s = hashlib.sha512(tmp)
        print "sha512:\t%s" % s.hexdigest()