Are there Proton Drive alternatives with true client-only key handling?

I’ve been researching encrypted cloud storage, especially Proton Drive, Tresorit, Sync, etc.

One thing I noticed is that even in some zero-knowledge systems, the server still receives an encrypted version of the user’s key.

I'm curious: are there any cloud storage systems where the encryption key never leaves the client device in any form?

Bonus question: what do people think about a system where users can reset passwords without losing access, by separating login credentials from encryption keys?

Would love to hear the community's thoughts.

2 points | by hasanur_m 1 day ago

1 comments

  • kevin061 1 day ago
    My current favourite is Koofr. European and rclone native. If Koofr ever goes out of business, your Koofr Vault data is easily decryptable with open source tools.