virtualkeyring Strong domain-specific passwords generator Virtual Keyring =============== :author: Olivier Grisel <olivier.grisel@ensta.org> :description: Generate rebuildable strong passwords Oneliner overview:: domain_password == base62(sha1(master_password + domain_key))[:8] Goal ---- This utility script helps generate a set of rebuildable domain-specific strong passwords out of a single easy to remember master password and domain specific keys such as "login@host". The generated passwords are strong since they use 8 characters out of a 62 characters long alphabet (lowercase and uppercase letters + digits) that are not to be found in any dictionary. You can always re-generate your passwords by taking the base 62 encoding of the sha1 hash of the concatenation of your master password and domain key. Install ------- With setuptools_:: $ easy_install -U virtualkeyring .. _setuptools: http://peak.telecommunity.com/DevCenter/setuptools Usage ----- Use the interactive command-line tool ``vkr`` that should now be in your PATH, and type in you master password and domain key:: $ vkr master password: mysecret domain key [e.g. 'login@host']: foobar@example.com your password is: hRnf6udB please clean your console (ctrl-L) after usage To generate passwords with length larger that 8 chars, for instance for an ssh key passphrase:: $ vkr -l 20 master password: mysecret domain key [e.g. 'login@host']: foobar@id_rsa your password is: ClRsTi3btiFhT1weDq0L please clean your console (ctrl-L) after usage To generate passwords for a specific alphabet:: $ vkr -a 42aAuUTt master password: mysecret domain key [e.g. 'login@host']: foobar@example.com your password is: AatT2UAa please clean your console (ctrl-L) after usage Changes ------- - 1.3 (2008-06-01): add factorized out password fetching from stdin (thanks to gawel) - 1.2 (2008-05-16): add -l and -a parameters - 1.1 (2008-02-16) use getpass to read the master password from the keyboard - 1.0 (2007-11-10) initial relase Online version -------------- I plan to run a pylons_-based version of the script at https://oliviergrisel.name (not yet done). .. _pylons: http://www.pylonshq.com Olivier Grisel c2a3bd281b56e0cbe16a8a9fd76c71f922c15ba8 1.3