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BTK - BitcoinToolKit Live Linux

What is BTK?

Bitcoin Tool Kit (or BTK) is a Live Linux (bootable from USB Stick or CD-Rom) which proivides different Tools to manage your Bitcoins in an secured enviroment. It tries to only use stock-software and I provide the step-by-step guide, how to build it on your own, so you don't have to trust me, that I didn't backdoor it.

Provided Tools

Linux tools, not Bitcoin related

  • Based on Debian (NetInstall)
  • Graphical Interface: LXDE
  • Browser: midori
  • gpg/gpa
  • tor

Bitcoin tools

Disclaimer

I can't vouch for any software I recommend here to be secure and backdoor-free. 
Further I can't guarantee for the proposed setup to be the most secure and/or 
robust. I tried to be as cautious as possible.

This is only a guideline to help you getting started - everything happens on your own risk.

How to build it from scratch

Used Conventions in this document

host#> command specifies a command which gets executed in the build-environment

btk#> command specifies a command which gets executed in the bitcoin-tool-kit environment (inside virtualbox)

If there is a multiline-command, I only write the shell-token once, so you can easily copy-paste it

Prerequisits

  • A working Linux Distro (I use Ubuntu 13.10)

  • Connection to the internet, while installing the different tools

  • VirtualBox, wget, other tools

    host#> sudo aptitude install virtualbox wget

  • An USB-Stick, a CD-Rom or any other bootable medium to install BTK to

  • BKT should be able to run on any linux-compatible platform. Any PC, Notebook or Netbook. Maybe later I will try to bring it to RasperryPie

Step-by-Step

Here follows a step-by-step guide, how to build your own BTK-bootable Linux from scratch, so you can be sure to get an untempered install.

If you want to take a shortcut, you can download prebuild images from here: PUT_URL_HERE...

Step 1) Invent the universe (should be already done)

Step 2) Create a working directory host#> mkdir ~/btk; cd ~/btk

Step 3) Download Debian NetInst http://cdimage.debian.org/debian-cd/7.2.0/i386/iso-cd/

  host#> wget http://cdimage.debian.org/debian-cd/7.2.0/i386/iso-cd/debian-7.2.0-i386-netinst.iso

Step 4) Create a new Virtual Image in virtualbox

  host#> 
    VBoxManage createvm --name "btk" --register
    VBoxManage modifyvm "btk" --memory 1024 --acpi on --boot1 dvd
    VBoxManage modifyvm "btk" --nic1 bridged --bridgeadapter1 eth0
    VBoxManage modifyvm "btk" --ostype Debian
    
    VBoxManage createhd --filename ./btk.vdi --size 10000
    VBoxManage storagectl "btk" --name "IDE" --add ide
    VBoxManage storageattach "btk" --storagectl "IDE" \
        --port 0 --device 0 --type hdd --medium ./btk.vdi
    VBoxManage storageattach "btk" --storagectl "IDE" \
        --port 1 --device 0 --type dvddrive --medium debian-7.2.0-i386-netinst.iso

    #Start the VM
    VBoxManage startvm btk

Step 5) Follow the Debian-Install (I used the Text-Based one) with defaults to install the Debian NetImg inside the new VirtualBox Image.

Some notes on settings:
  *) Language/KeyMap: As you like
  *) Hostname: btk
  *) Domain: btk
  *) Root-Password: As you like, but remember it (not really security relevant)
  *) User: btk
  *) User password: As you like, but remember it (not really security relevant)
  *) Timezone: As you like
  *) Partition: <Guided, Use entire disk>, <All files in one partition>
  
  *) Wait for the install to finish

  *) Mirror: As you like
  *) At the "Choose Software to install" step, only select following points:
      "Laptop" and "Standard system utilities"

Step 6) Reboot the new virtual machine and login as root

Initialize the base system with LXDE and other tools

root@btk#>
    apt-get update
    apt-get upgrade
    apt-get install lxde wget midori git dpkg-sig gpa
    
    # set LXDE as default GUI, check that "startlxde" is selected
    update-alternatives --config x-session-manager
    
    # and start it at boot
    update-rc.d lightdm defaults

    # LXDE starten
    /etc/init.d/lightdm start

Step 7) (optional) Install VirtualBox ClientExtensions (for better Performance inside the VM)

In the VirtualBox Window, click on "Devices" > "Install Guest Additions"

Open a root-terminal

root@btk#> 
    apt-get install build-essential module-assistant
    m-a prepare
    mount /media/cdrom
    sh /media/cdrom/VBoxLinuxAdditions.run

Step 8) Bitcoin related Tools/Programs

Open a normal terminal - basefolder

btk#>
    cd ~/Desktop
    mkdir BitcoinTools; cd BitcoinTools

Open a root terminal - general tools

root@btk#>
    apt-get install qrencode zbar-tools

Step 8.1) BitAdress.org

Open a normal terminal

btk#>
    cd ~/Desktop/BitcoinTools
    wget https://raw.github.com/pointbiz/bitaddress.org/master/bitaddress.org.html
    
    # check if the checksum is in the changelog:
    wget -o/dev/null -O- http://www.bitaddress.org/pgpsignedmsg.txt | \
        grep -P2 `sha1sum bitaddress.org.html` - || echo CHECKSUM FAIL

Step 8.2) Blockchain.info Wallet Recovery Tool

Open a normal terminal

btk#>
    cd ~/Desktop/BitcoinTools/
    wget https://blockchain.info/DecryptWallet.html
    mv DecryptWallet.html Decrypt_BlockchainInfo_Wallet.html
    sha1sum Decrypt_BlockchainInfo_Wallet.html | grep 50451490e0e5ac571b5ff0c6c52cb5c47440fbd5 || echo CHECKSUM FAIL

Step 8.3) SX

Open a root terminal - install/compile the sx-toolset

root@btk#>
    cd /tmp
    wget http://sx.dyne.org/install-sx.sh
    bash ./install-sx.sh

Open a normal terminal - install a nice offline copy of the documentation (optional)

btk#>
    mkdir ~/Desktop/BitcoinTools/doc; cd ~/Desktop/BitcoinTools/doc
    wget -m http://sx.dyne.org/index.html
    mv sx.dyne.org/ sx_doc

Step 8.4) Electrum

Open a root terminal

root@btk#>
    apt-get install python-qt4 python-pip
    pip install http://download.electrum.org/Electrum-1.9.2.tar.gz#md5=0666168901b7aa2c0d7cf42947966ceb

Step 8.5) Armory

Open a root terminal

root@btk#>
    cd /tmp
    wget "https://bitcoinarmory.googlecode.com/files/armory_0.88.1-beta_OfflineBundle_Ubuntu-10.04-32bit.tar.gz"
    tar xf armory_*
    cd Armo*
    gpg --recv-keys --keyserver keyserver.ubuntu.com 98832223
    dpkg-sig --verify *.deb
    ./Install_DblClick_RunInTerminal.sh
    
    # some dependencies are unmet - force install of missing packages
    apt-get install -f

Step X) Generate a Live-Enviroment via Linux Live Kit (http://www.linux-live.org/)

Open a root terminal

root@btk#>
    apt-get install squashfs-tools
    cd
    git clone https://github.com/Tomas-M/linux-live.git
    cd linux-live
    
    #edit config -> set name to "btk"
    #(todo, provide own config)
    #   LIVEKITNAME="btk"
    #   VMLINUZ=/boot/vmlinuz-3.2.0-4-486 

    nano .config

    ./build

wip...bkt