digidentity/libsaml — pull request #19 by kevintuhumury (2013-09-24 14:49:07+00:00)
Title: Added the EncryptedAttribute element, which uses the xmlenc gem. 

I've temporarily added it to the Gemfile itself (instead of the gemspec), since the Rubygems version doesn't included the required code yet. Once that has been released, we can remove the reference in the Gemfile and add it as a dependency in the gemspec.