Losing access to sensitive data, such as BIP39 mnemonics, can result in permanent loss of funds or critical information. Traditional backup methods often lack sufficient security and resilience against unauthorized access or data corruption. Passing on sensitive information across generations introduces additional security risks.

Superbacked is a secret management platform designed to create distributed, encrypted backups of sensitive data, ensuring high resilience against unauthorized access and data loss. The platform utilizes Blockcrypt, an open-source encryption scheme based on AES-256-GCM, to provide plausible deniability. For distributed backups, Superbacked employs Shamir Secret Sharing (SSS) implemented by Amber Sprenkels, further enhancing security before encrypting with Blockcrypt. This approach ensures that even if some backup shares are compromised, the original secret remains protected.

Blockcrypt encryption based on AES-256-GCM for standard and distributed backups.

Shamir Secret Sharing (SSS) implementation for distributed backups, enhancing security and resilience.

Argon2 key derivation, a brute-force-resistant password-hashing function.

Cryptographically-signed and notarized releases to ensure software integrity.

Open-source design allowing for easy auditing and verification of the application's security.

Support for creating distributed backups to protect against single points of failure.

The primary users are individuals seeking to securely back up and manage sensitive information, such as cryptocurrency mnemonics, and pass it on across generations.

The Superbacked app is currently offered for free.