zsipos is a fully transparent system to encrypt your sip phone calls with ZRTP. It gets plugged between your sip phone and your sip proxy.

$ git clone https://github.com/zsipos/zsipos
$ cd zsipos
$ git checkout zsipos-sel4
$ git submodule update --init --recursive

We assume Ubuntu 18.04 and bash as the build environment.

You need around 80GB of free disk space.

You must install Vivado HLS WebPack 2018.3.1 (free, registration required).

Get it from here: https://www.xilinx.com/products/design-tools/vivado/vivado-webpack.html .

It must be installed to /opt/Xilinx .

For all the other dependencies we prepared a install script for you:

$ scripts/install-deps.sh

Please configure your git identity:

$ git config --global user.email "[email protected]"
$ git config --global user.name "Your Name"

Also please setup the haskell compiler:

$ stack config set system-ghc --global true

Please do not run the build from a su session.

For the provided build scripts a build environment must be initialized. You must initialize this environemt by typing:

$ source scripts/env.sh

The first time you call this script it will set up a python virtual environemnt for you which may take some time.

To build zsipos please run its build script:

$ build-dist.sh rebuild

You have to flash the fpga hardware. Either connect the hardware and run the command

$ build-board.sh --nobuild --flashrom

or flash the file ./output/fpga-romboot.mcs to the fpga with the vivado tools.

Prepare a sd-card with two linux partitions containing a ext4 filesystem. Each partition must have a size of at least 1GB. Unpack the file ./output/rootfs.tar to the root directory of the first partition.

The first time you start the system you will be forced to enter a new system password. The initial system password is zsipos2018. If you enable sshd the first time you start the system with sshd it will generate its keys. This can take several minutes.