The Arweave blockweave is inherently public. But with apps that use ArFS, like ArDrive, your private data never leaves your computer without using military grade (and quantum resistant) encryption.
This privacy layer is applied at the Drive level, and users determine whether a Drive is Public or Private when they first create it. Private drives must follow the ArFS Privacy model.
Every file within a Private Drive is symmetrically encrypted using AES-256-GCM. Every Private Drive has a master “Drive Key” which uses a combination of the user’s Arweave Wallet signature, a user defined drive password, and a unique Drive identifier (uuidv4). Each file has its own “File Key” derived from the “Drive Key” and a unique File identifier (uuidv4). This allows for single files to be shared without exposing access to other files within the Drive.
Once a file is encrypted and stored on Arweave, it is locked forever and can only be decrypted using its file key.
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