Different passwords for subkeys

[flapflap]

Phillip Susi:
> I keep a subkey pair for daily use that I keep a copy of on my work
> machine, and reissue each yea and the master key only at home.  I
> would like to protect the master key with a password that is different
> from that used on the daily use subkey, but when I use --edit-key and
> specify the master key id, and use the passwd command to change the
> password, it applies it to all subkeys.  How can I set a different
> password only for the master key?

see http://lists.gnupg.org/pipermail/gnupg-users/2013-July/047172.html :)

in short: use gpgsplit to split the key, then import one part, set
passphrase A, export it (encrypted with A), delete it, then import the
other part, set passphrase B.

~flapflap

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