Lets you upload secret files to be used by a build.
You may have a keystore for jarsigner, a list of passwords, or other confidential files which you want to be used by a job but which should not be kept in its SCM, or even visible from its config.xml. Saving these files on the server and referring to them by absolute path requires you to have a server login, and does not work on slaves. This plugin gives you an easy way to package up all a job's secret files and access them using a single environment variable during the build.
Do not use 1.0 or 1.1. 1.2 works but has no GUI for file upload; 1.3 fixes upload GUI.