It takes a moment for Banshee to remember why you've come to him with a more-or-less-functional key generator, but after a bit of kind prompting from Ghost, he gets there.

"Right, right," he mutters, rummaging through a pile of ammo cases and weapon parts on his work bench. He finds a small device which he uses to digitally sign your generator, and just like that, you've got a simple little program that can spit out a code that should open that case.

"Go see if it works," Banshee says gruffly.