---
title: Using fish encryption with IRC
---

-   [Fish Irssi for chads](#fish-irssi-for-chads)
    -   [Installing required packages](#installing-required-packages)
    -   [compiling](#compiling)
    -   [Running](#running)
-   [Hexchat/Ubuntu/Debian](#hexchatubuntudebian)
-   [To Test fish encryption in
    APIRC:](#to-test-fish-encryption-in-apirc)
-   [Notes](#notes)

Fish Irssi for chads
====================

<https://github.com/falsovsky/FiSH-irssi>

Installing required packages
----------------------------

-   Debian / Ubuntu

    `apt-get install build-essential irssi-dev libglib2.0-dev libssl-dev cmake git`

-   Archgang

    `pacman -S cmake pkg-config glib2 openssl irssi`

compiling
---------

1.  `git clone https://github.com/falsovsky/FiSH-irssi.git`
2.  `cd FiSH-irssi`
3.  `cmake .`
4.  `make`
5.  `cmake -DCMAKE_INSTALL_PREFIX:PATH=/usr .`
6.  `make`
7.  `make install` (last one may or may not be needed)

Running
-------

Just type `/load fish` in the program. To have fish load at start-up run
`echo "load fish" >> /home/username/.irssi/startup`

Ran into: fish/core is ABI version 0 but Irssi is version 7, cannot load
<https://github.com/falsovsky/FiSH-irssi/issues/57>

Hexchat/Ubuntu/Debian
=====================

apt install hexchat-plugins

for more info: <https://fishlim.kodafritt.se/ubuntu_install.html>
<https://github.com/fladd/py-fishcrypt>

To Test fish encryption in APIRC:
=================================

/join \#fish /setkey 6CRi5rupyd6XfeKjghiLJ3yHHXCQ56EacFNytS

Notes
=====

Using Blowfish-ECB isn\'t a perfect method of encryption.

<http://blog.bjrn.se/2009/01/proposal-for-better-irc-encryption.html>

FiSH encrypts your messages in ECB mode (in other words, in independent
blocks). If the same block appears two times it will be encrypted the
same way both times. <https://fishlim.kodafritt.se/>

Note <https://github.com/falsovsky/FiSH-irssi/issues/12> and
<https://github.com/falsovsky/FiSH-irssi/issues/63>