This installable Rubygem contains a CA Bundle that you can reference in your Ruby code. This is useful for verifying HTTP requests, for example.

This is CA Bundle is derived from Mozilla Firefox's canonical set.

Add this line to your application's Gemfile:

gem 'certifi' 

And then execute:

$ bundle 

Or install it yourself as:

$ gem install certifi 

To reference the installed CA Bundle, you can use the built-in function:

> require'certifi' > Certifi.where=>#<Pathname:/home/hone/.gems/ruby/2.1.0/ruby-certifi-14.5.14/lib/certifi/vendor/cacert.pem>

You can use this with net/http to verify the SSL certificate:

require'uri'require'net/https'require'certifi'uri=URI.parse('https://httpbin.org/')http=Net::HTTP.new(uri.host,uri.port)http.use_ssl=truehttp.verify_mode=OpenSSL::SSL::VERIFY_PEERhttp.ca_file=Certifi.wherehttp.startdohttp.request_get(uri.path)do |res| putsres.bodyendend

Enjoy!