mirror of
https://github.com/Brandon-Rozek/website.git
synced 2024-12-23 17:11:15 +00:00
27 lines
1.3 KiB
Markdown
27 lines
1.3 KiB
Markdown
|
---
|
||
|
|
title: "Diceware"
|
||
|
|
date: 2020-05-01T00:22:31-04:00
|
||
|
|
draft: false
|
||
|
|
tags: []
|
||
|
|
---
|
||
|
|
|
||
|
|
Diceware is a passphrase generator proposed by [Arnold G. Reinhold](http://diceware.com/). Passphrases contain multiple words which are chosen according to a sequence of dice rolls. Let's look at a simplified example where we have binary dice (0 or 1) and we have a wordlist of two dice rolls.
|
||
|
|
|
||
|
|
````
|
||
|
|
00 abacus
|
||
|
|
01 abdomen
|
||
|
|
10 abdominal
|
||
|
|
11 abide
|
||
|
|
````
|
||
|
|
|
||
|
|
If you roll a zero twice, then you choose the word `abacus`. If you roll a zero and then a one, you choose the word `abdomen`.
|
||
|
|
|
||
|
|
In reality, [Joseph Bonneau](https://www.eff.org/about/staff/joseph-bonneau) over at the EFF, compiled a wordlist that consists of six dice rolls with a regular 5 sided dice. Resulting in a total of $6^5$ or 7776 different [english words](https://www.eff.org/files/2016/07/18/eff_large_wordlist.txt).
|
||
|
|
|
||
|
|
Instead of rolling physical dice forever, we can use a nicely put together python package called [`diceware`](https://github.com/ulif/diceware/). It is easily installable via pip: `pip install diceware`. The README explains the security implications far better than I can. At the time of writing, it uses by default `urandom` on Linux to choose 6 words from the EFF word list from before.
|
||
|
|
|
||
|
|
```bash
|
||
|
|
diceware
|
||
|
|
```
|
||
|
|
|
||
|
|
Gave me the random passphrase "DrearilyUncorruptOutboardKneeSubzeroGumdrop".
|