class OpenSSL::Config

#=> "bar"
config.get_value('default','foo')

and _key_ like so:
You can get a specific value from the config if you know the _section_

# foo=bar
#=> [ default ]
puts config.to_s
#=> #
config = OpenSSL::Config.load('foo.cnf')

Given the following configurating file being loaded:

Gets the value of _key_ from the given _section_
#

def get_value(section, key)
  if section.nil?
    raise TypeError.new('nil not allowed')
  end
  section = 'default' if section.empty?
  get_key_string(section, key)
end