Change encryption on the secret key

David Shaw dshaw at
Tue Aug 17 05:18:21 CEST 2010

On Aug 16, 2010, at 8:38 PM, Joseph Isadore Ziff wrote:

> Dear Fellow Gnupg users,
> I recently grew more knowlegeable about of the different ciphers and compression methods. I already generated my secret key but would like to change the symmetric encryption protecting the secret key. I put the following in my gpg.conf:
> s2k-cipher-algo AES256
> and then I updated my password with gpg --edit-key, passwd. Is that enough to update the cipher on my private key?

Yes.  See also the --s2k-digest-algo option, but the default is what you want anyway.

> Is there also a way to detect the encryption algorithm on a file? Any help with these questions is appreciated.

Try gpg --list-packets, or decrypting with "-v" set.


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