An ActiveStorage gem that uploads across one or more other ActiveStorage services using Shamir Secret Sharing (via the tss-rb gem). Use it in your storage.yml file. It is not a mirror, but can be named as a storage service.

# in storage.yml
disk1: 
  service: Disk
  root: "tmp/disk1"

disk2:
  service: Disk
  root: "tmp/disk2"

horcrux:
  service: Horcrux
  shares: 5
  threshold: 3
  services: [ disk1, disk2 ]

Configuration elements:

• service: name of the service
• shares: specified the number of shares split across services.
• threshold: specifies the minimum number of shares are needed to reconstruct the contents.
• services: one or more other ActiveStorage services in storage.yml

Instead of a single key, an array of keys is passed to the upload function. The array of keys is not persisted and can be shown to the user for subsequent downloads.