This plugin prevents locked chests from decaying.
This plugin works by modifying the behavior of the internal Minecraft server (NMS) code. Therefore, if you choose to use this plugin, you will need to update it for every new version of CraftBukkit unless you want your blocks to decay.
For a plugin that does fun things when you click on a locked chest, see LockedChestSurprise by iKeirNez. Note that, at the time of this writing, it does not actually prevent locked chests from decaying; you will still need this plugin.
This plugin currently requires no configuration. None are planned.
All locked chests will be preserved regardless of data value. This may change in the future, although by default this plugin will never decay chests if they have a data value of 0 or 4, even in the future.
This plugin currently does not have any permissions. None are planned.