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I'm a Debian user. I just created my own GPG public key. I'm just wondering if I re-install Linux on my system, is it possible to use the original GPG key or do I have to create a new one?

NOTE: If you know any good example sites for using the GPG key, it would be very helpful.

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Delete the file ~/.gnupg/random_seed. Then make a backup of the whole directory ~/.gnupg/. Copy it back after reinstalling the OS.

Take care to securely erase the files on the backup storage if other people might get access to it (e.g. if it's a USB stick).

Usually /home is put on a separate volume so that the user data is not affected by an OS change.

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  • How do you securely erase a USB stick? It'd be better to store it on an encrypted filesystem.
    – Johnny
    Nov 26, 2014 at 17:25
  • @Hauke Laging, When I visit some blog site, then I saw the GPG key. Is there any reason to show their own GPG key to people ? Nov 27, 2014 at 18:01
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    @Changju.rhee You obviously have to read some very basic stuff about asymmetric crypto. emailselfdefense.fsf.org/en Nov 27, 2014 at 19:51

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