dice ware word generator

diceware_passwd.sh

#!/bin/bash

# see https://blog.agilebits.com/2011/06/21/toward-better-master-passwords/
# and http://world.std.com/~reinhold/diceware.wordlist.asc

DICEWARE_STASH_FILE=~/tmp/diceware.txt
WORDS=$1
[[ "$WORDS" == "" ]] && WORDS=5


# make sure the directory of the stash file exists...
DIR=$(dirname "$DICEWARE_STASH_FILE")
#[ ! 

# stash the current list of diceware words
[ ! -d ~/tmp ] && mkdir ~/tmp
if [ ! -f $DICEWARE_STASH_FILE ]; then
    curl -s http://world.std.com/~reinhold/diceware.wordlist.asc | grep -E "^[1-6]{5}" > $DICEWARE_STASH_FILE
fi


# create some random sequences of "dice throws"
export LC_CTYPE=C
for i in {1..10}; do
    cat /dev/urandom | tr -dc '1-6' | fold -w 5 | /usr/bin/head -n $WORDS | while read throw; do
        grep -E "^$throw" $DICEWARE_STASH_FILE | awk '{ printf "%s ", $2 }'
    done
    echo
done

1. download to your home dir
2. open up terminal
3. chmod +x diceware_passwd.sh
4. ./diceware_passwd.sh

this will download the diceware word list if it hasn't been already, then generate lists of 5 random words from the big list. you can pass a number as a parameter to the script to generate that many words in each string.

why is diceware good for generating strong yet memorable passwords? see:

• https://blog.agilebits.com/2011/06/21/toward-better-master-passwords/
• https://blog.agilebits.com/2013/04/16/1password-hashcat-strong-master-passwords/