terror email cron job

#!/bin/sh
# mikethegoat from Bruce Schneier blog (schneier.com) 20131110
# public domain. chicken is tasty.

# very quick and very dirty hacky script to send dodgy looking encrypted
# mail to a friend of mine - and he can run it too and send really scary
# stuff back. As discussed on schneierforms you'll probably want to make
# a key with a size that isn't prohibitively large so that they don't just
# give up. No - we want them to think they can crack it and waste their
# resources on it. So I would pick a 1024 bit RSA key. 512R may be too
# easy on their clusters. Once they decrypt it and figure out it is junk
# this approach will cease to be useful.
#
# This script hasn't been fully tested. Actually it hasn't been tested at
# all (I wrote this in ten minutes on a flight). So the code is very messy
# and unnecessarily complex as I was/am pretty tired. Anyway, here goes:
#
# Given there are laws in some jurisdictions that can compell key disclosure
# and even imprison those who can't comply I decided against just using
# random junk. By using the front page of Google News and by keeping a copy
# of your private key (see below re dummy key) and perhaps a second copy
# with your lawyer if you ever do get a court order to release the key, you
# can comply an demonstrate it was just crap to annoy the NSA.
#
# I suggest you don't expose your normal GNUPG keyring to this script.
# If you're going to run this from a crontab then perhaps run it as an
# unprivileged user and generate them a 1024 key. Ensure you keep a copy.
#
# One last warning - this script has no sanity checking. It has not been
# authored as a user oriented tool nor is it something you would give
# third parties access to. It is simple - just plug in your friend's email
# address, put it in your crontab to run a few times a day and get your
# friend to reciprocate. Yeah, few things are escaped and it is just
# a PoC. It is not meant to be secure, reliable or fault tolerant. It
# is a fucking shell script. Deal with it.

# Variables
MYKEY=F0D1E2B1      # the ID of your dummy key
RECKEY=A0B1D1E1     # the ID of your buddy's dummy key
RECADDR=john@john.com   # the e-mail address of your buddy

# Prepare your eyes for the most ugly bit of shell hacking around.
# It is scary. Really scary. And yes - I know that you can do this in
# about 1/10th of the space. But I don't care. Love my convoluted script.
# I know deep down in your hacker heart you feel it too.
generatesubject()
{
chunk=$(head /dev/urandom|md5sum|tr -d [:alpha:]|cut -c1-4) # <<-- EVIL
sub()
{
tc=$(echo "$chunk" | cut -c$1)
[ $tc = 0 ] || [ $tc = 9 ] && echo -n "$2";[ $tc = 2 ] || [ $tc = 7 ] && echo -n "$3"
[ $tc = 4 ] || [ $tc = 1 ] && echo -n "$4";[ $tc = 6 ] || [ $tc = 3 ] && echo -n "$5";[ $tc = 8 ] || [ $tc = 5 ] && echo -n "$6"
return
}
case "$(echo "$chunk" | cut -c4)" in
0|9)
echo -n "Re: "
sub 1 "our " "great encouragement for the " "organizing the " "Prophet's grand plan for the " "the big "
sub 2 "car-bombing " "anthrax attack " "propane truck hijack " "assault " "suicide bombing "
echo -n "at the "
sub 3 "White House" "Capitol Hill" "Pentagon" "CIA HQ" "gov't target"
echo
;;

1|8)
echo -n "Re: pickup of our "
sub 1 "coke " "meth " "heroin " "oxycodone " "ephedrine "
echo -n "from "
sub 2 "Biminy " "Florida " "Amsterdam " "Afghanistan " "the diplomat "
sub 3 "was delayed" "rescheduled" "organized" "happening tomorrow" "went well"
echo
;;
2|7)
echo -n "Re: can you "
sub 1 "source " "acquire me " "give estimate cost of " "quietly acqurie " "obtain "
sub 2 "65x soviet RPG-7" "VR CW agent, weaponized" "fragmentation mines" "Soviet CS" "500+ SKS with ammo"
echo "?"
;;
3|6)
echo -n "Re: "
sub 1 "Al Qaeda" "Hamas" "Hezbollah" "Al-Shebaab" "Tehriki-Taliban"
sub 2 ": members NOTE NEW ORDERS" " needs your help old friend" " Leadership Meeting in Yemen" " recruitment procedures" " does great work - plans to destroy Israel"
echo
;;
4|5)
echo -n "Re: intel on "
sub 1 "W.H. access control system" "president Obama security detail" "vulnerabilities in US financial clearance software" "voting machine exploits" "Washington D.C. potable water supply"
echo
;;
esac
}

# You could do what you want here - substitute lynx with links or use wget
# or curl and just dump the raw HTML. Use a different site. Perhaps just
# seed a counter with the current timestamp and do 10,000 lines of just the
# counter iterating upwards. I'm not your mother. I don't care.
# I would use mutt's command line mailing feature if you have it - simply
# because you can specify From: headers and what not - and you might be
# able to even spoof your UA so it looks like, say Outlook Express or Moz.
#
lynx -dump http://news.google.com|gpg -u $MYKEY -a --encrypt -r $RECKEY|mail -s "`generatesubject`" $RECADDR

# That's it. I hope you enjoy this piece of crap.