Strong password generator for humans.
- Both visually and phonetically unambiguous
- No shift or alternate keyboard needed when typing
- Blanks can be inserted at arbitrary places to enhance visual representation
Random password from a 40 bit key space:
$ rpass jikmus xuzjex
Random password from a 60 bit key space:
$ rpass 60 loltuk zahxok takrep
$ rpass -h usage: rpass [bitlen]
Install on macOS
$ make && sudo make install
Install on OpenBSD
$ make && doas make install
Key space requirements
The 40 bit default relies on strong storage of the password, i.e. bcrypt(3) with sufficient rounds. If your password is going to be stored using a weaker cryptographic construct, you have to use a bigger key space. E.g. say you want to generate a password you can use for one year and is stored using sha256(1). Furthermore your adversary has $20,000.00 to spend. According to 8x Nvidia GTX 1080 Hashcat Benchmarks as of 2016 the adversary can try 230 billion hashes per second, this makes that you'll need a key space of 64 bit (hashes per second * 3600 * 24 * 365 * 2).
Copyright (c) 2017 Tim Kuijsten
Permission to use, copy, modify, and/or distribute this software for any purpose with or without fee is hereby granted, provided that the above copyright notice and this permission notice appear in all copies.
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.