Which of the following statements is true regarding eCryptfs?
A. For every file in an eCryptfs directory there exists a corresponding file that contains the encrypted content.
B. The content of all files in an eCryptfs directory is stored in an archive file similar to a tar file with an additional index to improve performance.
C. After unmounting an eCryptfs directory, the directory hierarchy and the original file names are still visible, although, it is not possible to view the contents of the files.
D. When a user changes his login password, the contents of his eCryptfs home directory has to be re-encrypted using his new login password.
E. eCryptfs cannot be used to encrypt only directories that are the home directory of a regular Linux user.
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I don’t think A is the answer because when the question says: “there exists a corresponding file”, it gives me the idea that he is saying the file is “duplicated”. Like there is a link, that points do the real encrypted file, Which wold be wrong.
Question is not easy to understand, ut I guess that correct reply is A.
It’s very easy to reproduce, but before mounting an encrypted folder, the content (e.g. files, etc.) are still visible by “ls” command.
However, the content is encrypted, a “cat” command will show a series of unreadable characters.
Following URL explains that is possible to encrypt the whole HOME folder:
http://sysphere.org/~anrxc/j/articles/ecryptfs/index.html
Answer is A. Prove: build an ecryptfs container, create a file structure and use the tree command on both the encrypted and the unlocked structure.