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# Installing Hush
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## Install
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echo 'deb https://dl.bintray.com/myhush/hush/ hush main' | sudo tee --append /etc/apt/sources.list.d/hush.list
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apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 379CE192D401AB61
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sudo apt-get update
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sudo apt-get install hush
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## Create a HUSH configuration file (*important*):
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```
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mkdir -p ~/.hush
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echo "rpcuser=username" >> ~/.hush/hush.conf
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echo "rpcpassword=`head -c 32 /dev/urandom | base64`" >>~/.hush/hush.conf
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echo "addnode=node.myhush.network" >> ~/.hush/hush.conf
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echo "addnode=mmc01.madbuda.me" >> ~/.hush/hush.conf
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echo "addnode=zdash.suprnova.cc" >> ~/.hush/hush.conf
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```
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## Download proving key
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```
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hush-fetch-params
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```
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# Building Hush from source
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Building Hush from source will take some time but your efforts will be rewarded :)
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## Requirements
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You will need at least 4GB of RAM to build hush from git source, OR
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you can enable a swap file. To enable a 4GB swap file on modern Linux
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distributions:
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sudo fallocate -l 4G /swapfile
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sudo chmod 600 /swapfile
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sudo mkswap /swapfile
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sudo swapon /swapfile
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You will need to have Git and a C++ compiler and libtool and a
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a few other libraries, depending on your setup.
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## Building
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The following build process generally applies to Ubuntu (and similar) Linux
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distributions. For best results it is recommended to use Ubuntu Linux 16.04
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or later.
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Build HUSH along with most dependencies from source by running
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Get dependencies:
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```{r, engine='bash'}
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sudo apt-get install \
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build-essential pkg-config libc6-dev m4 g++-multilib \
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autoconf libtool ncurses-dev unzip git python \
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zlib1g-dev wget bsdmainutils automake
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```
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Make sure to create a HUSH configuration file as described above.
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## Downloading Git source repo, building and running Hush
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```{r, engine='bash'}
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# pull
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git clone https://github.com/MyHush/hush.git
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cd hush
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# fetch key
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./zcutil/fetch-params.sh
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# Build
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./zcutil/build.sh -j$(nproc)
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# Run a HUSH node
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./src/hushd
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```
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## Supported Platforms
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Currently Linux, Windows and Mac OS X are our supported platforms. If you
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are interested in porting Hush to a new operating system, we are interested
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to talk with you.
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We aim to support all platforms, but there is only so much time in the day.
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Currently, any ARMv7 machine will not be able to build this repo, because the
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underlying tech (zcash and the zksnark library) do not support that instruction
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set.
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This also means that RaspberryPi devices will not work, unless they have a
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newer ARMv8-based Raspberry Pi.
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