# File lib/fog/cloudstack.rb, line 19 def self.signed_params(key,params) query = params.to_a.sort.collect{|c| "#{c[0]}=#{escape(c[1].to_s)}"}.join('&').downcase signed_string = Base64.encode64(OpenSSL::HMAC.digest(@@digest,key,query)).strip signed_string end