You don't have to control the server, just make sure the server doesn't touch the key. Decrypt locally, with FOSS tools. So long as you keep the key off the cloud, the files are completely safe. If you're telling their website your key to decrypt, there's no guarantee it's not stealing your key - your data privacy is a fiction.
You don't have to control the server, just make sure the server doesn't touch the key. Decrypt locally, with FOSS tools. So long as you keep the key off the cloud, the files are completely safe. If you're telling their website your key to decrypt, there's no guarantee it's not stealing your key - your data privacy is a fiction.
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