Is that approach information-theoretically secure? Shamir Secret Sharing is, and the mathematics is very simple.
Note that the encryption step is, strictly speaking, not necessary for Shamir either. But there are benefits to encrypting the secret and only using SSS for the key (I'm not sure if that's how Horcrux works, but that's how my fairly-similar tool Paperback[1] works).
Note that the encryption step is, strictly speaking, not necessary for Shamir either. But there are benefits to encrypting the secret and only using SSS for the key (I'm not sure if that's how Horcrux works, but that's how my fairly-similar tool Paperback[1] works).
[1]: https://github.com/cyphar/paperback