colemanjp/Install Signal on Tails.md

## Install Signal on Tails.md

      
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              Install Signal on Tails.md
            
          
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Preparation

Boot off Tails USB
Enable admin password
Unlock persistent storage
Start
Start Tor Connection
Applications > Tails > Persistent Storage > Network Connections > On
Applications > Tails > Persistent Storage > Additional Software > On
Applications > Tails > Persistent Storage > Dotfiles > On
Install Signal

Open Terminal application
Create Directories for Persistence

sudo mkdir -m 755 /live/persistence/TailsData_unlocked/sources.list.d
sudo mkdir -m 755 /live/persistence/TailsData_unlocked/keyrings
sudo mkdir -m 755 /live/persistence/TailsData_unlocked/Signal
sudo chown amnesia:amnesia /live/persistence/TailsData_unlocked/Signal
sudo mkdir -m755 -p /live/persistence/TailsData_unlocked/dotfiles/.local/share/applications
cd /live/persistence/TailsData_unlocked/dotfiles/
sudo chown -Rh amnesia:amnesia .local
Add Persistence Directories to Persistence.conf

sudo bash -c "echo '/etc/apt/sources.list.d  source=sources.list.d,link' >> /live/persistence/TailsData_unlocked/persistence.conf"

sudo bash -c "echo '/usr/share/keyrings/persistent source=keyrings' >> /live/persistence/TailsData_unlocked/persistence.conf"

sudo bash -c "echo '/home/amnesia/.config/Signal source=Signal' >> /live/persistence/TailsData_unlocked/persistence.conf"

Download and Install Signal GPG Keyring

cd $HOME
torify wget https://updates.signal.org/desktop/apt/keys.asc -O- | gpg --dearmor > signal-desktop-keyring.gpg
sudo cp signal-desktop-keyring.gpg /live/persistence/TailsData_unlocked/keyrings
sudo bash -c "echo 'deb [arch=amd64 signed-by=/usr/share/keyrings/persistent/signal-desktop-keyring.gpg] tor+https://updates.signal.org/desktop/apt xenial main' > /live/persistence/TailsData_unlocked/sources.list.d/signal.list"

Install Custom Signal Startup Script

This script sets environment variables needed run Signal on Tails
cat >$HOME/Persistent/signal.sh<<EOF
#!/bin/sh
export HTTP_PROXY=socks://127.0.0.1:9050
export HTTPS_PROXY=socks://127.0.0.1:9050
signal-desktop
EOF

chmod 755 $HOME/Persistent/signal.sh
Create Desktop Script for Signal

This creates an icon for the custom signal.sh script.  When you run Signal, pick the generic diamond Signal icon rather than the built in one.
cat >/live/persistence/TailsData_unlocked/dotfiles/.local/share/applications/Signal.desktop<<EOF
[Desktop Entry]
Name=Signal
GenericName=Signal Desktop Messenger
Exec=/home/amnesia/Persistent/signal.sh
Terminal=false
Type=Application
EOF

Reboot and Install signal-desktop Package

sudo reboot
sudo apt get update
sudo apt install signal-desktop
Click "Install Every Time" when prompted.  This creates an entry in /live/persistence/TailsData_unlocked/live-additional-software.conf
Reference

Signal download https://signal.org/en/download/linux/
Add new repos https://tails.boum.org/doc/first_steps/additional_software/#index6h1
Apt doesn't allow symlinks for signing keys https://gitlab.tails.boum.org/tails/tails/-/issues/17510
Applications ▸ Tails ▸ Delete persistent volume.