OpenSSL GOST adapter for HTTPI

This gem allows to perform HTTP requests over secure connections, that requires russian GOST cryptoalgorithms to be used. It allows to use client certificate and private key for authentication.

WARNING! This gem is kind of «last chance software». It uses openssl s_client command to perform requests. As it's command for debug and testing purposes only, it's slow and unreliable. Use at your own risk only if nothing else is working for you (as it for me).


OpenSSL installation and configuration

You need to install OpenSSL 1.0.0 or newer (OpenSSL 1.0.1 or newer is better) with GOST engine installed (it's bundled starting from 1.0.0).

Usually in modern Lunux distributions it's installed already (at least in Ubuntu 12.04). Mac OS X users should install it through Homebrew or MacPorts: brew install openssl

In /etc/ssl/openssl.cnf (/usr/local/etc/openssl/openssl.cnf for Mac OS X) add next line to the very beginning of file:

openssl_conf = openssl_def

Add next lines to the very end of file:

engines = engine_section
gost = gost_section
default_algorithms = ALL
dynamic_path = /usr/lib/x86_64-linux-gnu/openssl-1.0.0/engines/
engine_id = gost
CRYPT_PARAMS = id-Gost28147-89-CryptoPro-A-ParamSet

dynamic_path isn't required in Mac OS X. Linux users can get it's value executing locate

After that, openssl ciphers | tr ":" "\n" | grep GOST should return following lines:


Gem installation

Add this line to your application's Gemfile:

gem 'httpi-adapter-openssl_gost'

And then execute:

$ bundle

Or install it yourself as:

$ gem install httpi-adapter-openssl_gost


require 'httpi/adapter/openssl_gost'
request =
request.url = ''
HTTPI.get(request, :openssl_gost)

Or you can specify it as default adapter for all requests:

require 'httpi/adapter/openssl_gost'
HTTPI.adapter :openssl_gost

If you need to specify client credentials (certificate and private key), pass file paths to cert_file= and cert_key_file= methods of the request.auth.ssl:

request.auth.ssl.cert_file     = '/full/path/to/client.crt'
request.auth.ssl.cert_key_file = '/full/path/to/client.pem'

Similarly, you can pass certificate authority certificate filepath to ca_cert_file= method. openssl s_client doesn't recognize system CA certificates automatically, this is a known bug (please hit «This bug affects me» link there).

Usage with savon

You need to use custom branches of savon and wasabi until next pull requests are not merged in:

  1. savonrb/wasabi#44
  2. savonrb/savon#566:

Place in your Gemfile:

gem 'wasabi', github: 'Envek/wasabi', branch: 'specify_adapter'
gem 'savon',  github: 'Envek/savon',  branch: 'specify_adapter'

Specify :adapter in savon client global options:

require 'httpi/adapter/openssl_gost'
soap_client = Savon.client(
  wsdl:                 '',
  ssl_cert_file:        '/full/path/to/client.crt',
  ssl_cert_key_file:    '/full/path/to/client.pem',
  ssl_ca_cert_key_file: '/full/path/to/ca.crt',
  adapter:              :openssl_gost,

And use it as usual:, message: {foo: 1})


  1. Fork it ( )
  2. Create your feature branch (git checkout -b my-new-feature)
  3. Commit your changes (git commit -am 'Add some feature')
  4. Push to the branch (git push origin my-new-feature)
  5. Create a new Pull Request