eCryptfs: Single-File Encryption in Linux

“One of the great advantages of eCryptfs is that the encryption
is made at the single-file level and all the metadata needed for
encryption/decryption are embedded in the file itself. This process
makes each file a little larger than the decrypted version, but it

“* Having under the same directory files encrypted by different
users and with different encryption contexts, and each user can
access only his/her files;
* Moving individual files by copying them in encrypted form to
another location where they will be accessible simply by using the
right encryption context;
* Using backup tools that allow incremental file transfer.”


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