Download
********

No additional dependencies except Python 2.7/3.x interpreter are
required.

   Preferable way is to download tarball with the signature:

     $ [fetch|wget] http://www.pygost.cypherpunks.ru/pygost-5.13.tar.zst
     $ [fetch|wget] http://www.pygost.cypherpunks.ru/pygost-5.13.tar.zst.{asc,sig}
     [verify signature]
     $ zstd -d < pygost-5.13.tar.zst | tar xf -
     $ cd pygost-5.13
     $ python setup.py install

   You can obtain releases source code prepared tarballs on
<http://www.pygost.cypherpunks.ru/>.  You *have to* verify downloaded
tarballs authenticity to be sure that you retrieved trusted and
untampered software.  There are two options:

OpenPGP (https://www.openpgp.org/) '.asc' signature
     Use GNU Privacy Guard (https://www.gnupg.org/) free software
     implementation.  For the very first time it is necessary to get
     signing public key and import it.  It is provided here
     (PUBKEY-PGP.asc), but you should check alternate resources.

     pub   rsa2048/0xE6FD1269CD0C009E 2016-09-13
           F55A 7619 3A0C 323A A031  0E6B E6FD 1269 CD0C 009E
     uid   PyGOST releases <pygost at cypherpunks dot ru>

          $ gpg --auto-key-locate dane --locate-keys pygost at cypherpunks dot ru
          $ gpg --auto-key-locate  wkd --locate-keys pygost at cypherpunks dot ru

OpenSSH (https://www.openssh.com/) '.sig' signature
     Public key (PUBKEY-SSH.pub) and its OpenPGP signature
     (PUBKEY-SSH.pub.asc) made with the key above.  Its fingerprint:
     'SHA256:/Z3T/T2sXaaunefAL6tz3ZykHTDYIMh5TLd9Hh9mxlU'.

          $ ssh-keygen -Y verify -f PUBKEY-SSH.pub -I pygost@cypherpunks.ru -n file \
              -s pygost-5.13.tar.zst.sig < pygost-5.13.tar.zst

   You can obtain development source code with 'git clone
git://git.cypherpunks.ru/pygost.git'.