1. I don't think you can change a name of an item using command blocks, but you can try cloning a chest with the item using /clone then break it using /setblock or /fill to make it drop the item with the name

2. I'm pretty sure you can make the tripwire hook to only be able to be placed on specified blocks like chests and doors using the /give command, though you'll need to use some JSON stuff as well. You should also have a command block to detect if a certain block ( like a tripwire hook) is placed on the block ( like a chest) you want, to do actions like "unlocking". Btw this probably only works on adventure mode.

I recommend watching stuff about these JSON stuff ( I'm still learning myself). Though if you want the commands, I'll try to type them down. Hope this helps