Adds Redmine::Utils.random_hex for generating a random hex string.

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@9071 e93f8b46-1217-0410-a6f0-8f06a7374b81

lib/redmine/utils.rb

@@ -33,6 +33,13 @@ module Redmine
           ActionController::AbstractRequest.relative_url_root=arg
         end
       end
+
+      # Generates a n bytes random hex string
+      # Example:
+      #   random_hex(4) # => "89b8c729"
+      def random_hex(n)
+        ActiveSupport::SecureRandom.hex(n)
+      end
     end
   end
 end