after umounting files can be deleted

Asked by Amit on 2011-12-08

HI all i am new to this ecryptfs
I want to do encrypt my one folder
i completed mount procedure as given below

sudo mount -t ecryptfs /home/user1/test_ecrpt/1/ /home/user1/test_ecrpt/1 -o ecryptfs_cipher=aes,ecryptfs_key_bytes=16,ecryptfs_enable_filename_crypto=n,ecryptfs_passthrough=n,key=passphrase:passwd=test

and umount as
sudo umount /home/user1/test_ecrpt/1/

after umount i m not able to read files which in " /home/user1/test_ecrpt/1/ " folder but i am able to delete these files .

but after encryption i must not able to delete these files .

Please tell me what am i doing wrong .

Thanks
Amit garg

Question information

Language:
English Edit question
Status:
Solved
For:
eCryptfs Edit question
Assignee:
No assignee Edit question
Solved by:
Serge Hallyn
Solved:
2011-12-13
Last query:
2011-12-13
Last reply:
2011-12-08

i don't use eCryptfs and never tried it, but everything here is logical:
there is file "/home/user1/test_ecrpt/1/" if it's unmounted nobody uses it, so you can delete it, everything is right. of course you can't read it, because it is encrypted. as i understand this app is created for that reason:) (so that only user with pass could read data)
if file is encrypted so eCryptfs uses it, you can't delete any file which is in use, everything is right.

Amit (g2291632-amit) said : #2

according to encryption i should not delete or modify read files.

but here in my case i m able delete all files.

Please tell what i am doing wrong

and on mounting/unmounting you don't see any errors in terminal?

Best Serge Hallyn (serge-hallyn) said : #4

Quoting Amit (<email address hidden>):
> Question #181249 on eCryptfs changed:
> https://answers.launchpad.net/ecryptfs/+question/181249
>
> Status: Answered => Open
>
> Amit is still having a problem:
> according to encryption i should not delete or modify read files.

That is false.

> but here in my case i m able delete all files.
>
> Please tell what i am doing wrong

You are doing nothing wrong, but your understanding of encryption is
wrong. If you hand you a piece of paper with an encrypted message,
you can still throw away or write over the encrypted message.

Amit (g2291632-amit) said : #5

Thanks Serge Hallyn, that solved my question.