paperback VS Vault

Yes. QR codes are meant to store only a few kilobytes at most. They are not suitable for encoding gigabytes of data.

At perhaps 2KB per page, you'd need 524288 pages to store a 1GB. That's 1048 reams. Please just use an archival optical disk instead.

Even if the scheme using multiple QR codes in sequence rather than a single large code block. The paper backup implementations that use QR codes https://github.com/intra2net/paperbackup https://github.com/cyphar/paperback are only meant to be used for private key backup.

There's a cool paper-based backup tool that also uses Shamir Secret Sharing to let you distribute a bunch of paper copies to your friends to restore a file optically:

https://github.com/cyphar/paperback

Paperback will do it automatically for you, open source and free. Thier README also has recommendations for long term storage of paper.

That exists: https://github.com/cyphar/paperback (or the paper-store script suggested by /u/nurupoga/ below).

there are ready-made solutions for that, like https://github.com/cyphar/paperback

You could encrypt your key info using paperback. This then requires at least X amount of people holding parts of the decrypt key to come together to decrypt your last will.

I know you're joking but there's actually software that was made just for that

HashiCorp Vault

For a more comprehensive and robust secret management solution, get your hands on tools like GCP Secret Manager, or HashiCorp Vault. They're like the security guards of your secrets, providing a safe house, access control, and keeping logs of who’s been snooping around.

HashiCorp Vault is a popular tool for managing secrets in Kubernetes clusters. It offers advanced features such as secure storage, encryption, dynamic secrets generation, and integration with Kubernetes through its Kubernetes authentication method.

So you've just bought a new platform tool? Maybe it's Hashicorp Vault? Snyk? Backstage? You’re excited about all of the developer experience, security and other benefits you're about to unleash on your company—right? But wait…

You seem to be looking for a cross-platform solution, and https://www.vaultproject.io/ provides just that. If everything was in AWS, AWS Secret Manager might be great, but imo Vault provides much better platform-agnostic capabilities.

https://github.com/openwrt/luci/blob/master/applications/luc...

https://developer.hashicorp.com/vault/tutorials/secrets-mana... https://github.com/hashicorp/vault :

> Refer to Build Certificate Authority (CA) in Vault with an offline Root for an example of using a root CA external to Vault.

Secret Management: Securely stores sensitive configuration data and secrets using tools like AWS Secrets Manager or HashiCorp Vault. Avoid hardcoding secrets in code or configuration files.

The author of this tool basically took the Shamir code from Hashicorp Vault, which is pretty mainstream. If you're looking for a solid implementation, I would start there[0]. I wouldn't use the Shamir code from this repo, as it's an old version of the vault code using field arithmetic that doesn't run in constant time.

[0]: https://github.com/hashicorp/vault/blob/main/shamir/shamir.g...

Out of curiosity, what do you mean by this? cross-cluster? they already have HA: https://github.com/hashicorp/vault/blob/v1.14.1/website/cont...

while digging up that link, I also saw one named replication: https://github.com/hashicorp/vault/blob/v1.14.1/website/cont...