On Sun, 17 Jun 2012 12:31:04 +1000, Chris Angelico wrote: > On Sun, Jun 17, 2012 at 12:15 PM, Yesterday Paid > <howmuchisto...@gmail.com> wrote: >> I'm making cipher program with random.seed(), random.random() as the >> key table of encryption. >> I'm not good at security things and don't know much about the algorithm >> used by random module. > > For security, you don't want any algorithm, you want something like > /dev/random (on Unix-like platforms). > > I'm pretty sure Python includes crypto facilities. Unless it (most > oddly) lacks these batteries, I would recommend using one of them > instead. > > ChrisA
Cryptography is a complex subject - I've had the (mis)fortune to study it briefly. Whatever you do - *do not* attempt to write your own algorithm. Python includes hashlib (forms of SHA and MD5) and uuid modules, but I take it a symmetric or possibly public/private key system is required - depending on what you want to secure, where it's stored and who needs access. I generally find a separate partition with an encrypted file-system (which is fairly straight forward on *nix systems or I think there's a product out there that works with Windows), is a lot easier and puts the load on the filesystem/OS instead of having to be handled in your application is a lot simpler. Jon -- http://mail.python.org/mailman/listinfo/python-list
