Superbacked standard and distributed backups are encrypted using Blockcrypt, an open source encryption scheme based on AES-256-GCM that provides plausible deniability (watch episode). Superbacked distributed backups are encrypted using sss, one of the most secure implementations of Shamir Secret Sharing developed by Amber Sprenkels (a post-quantum cryptography PhD) before being encrypted (again)
using Blockcrypt. Blockcrypt encryption keys are derived using Argon2, a brute-force-resistant password-hashing function that won the 2015 Password Hashing Competition Fun fact: it would theoretically take 10,539,639 years to brute-force Superbacked-generated 5-word passphrase using MacBook Air with M1 chip (we’re not kidding around).Powered by state-of-the-art open source cryptography