Hi -
I have a public key with two encryption subkeys (see note below). I am
attempting to clobber together a bash script to select a given subkey and
use that subkey for encryption. Using the following sample key and sample
script, `afile` is encrypted with subkey CCCCCCCC (and not the expected
BBBBBBBB subkey). Note that no matter what subkey register slot I provide to
`--edit-key` in the sample script, `gpg` always encrypts using the CCCCCCCC
subkey. How can I selectively use a given encryption subkey in a
noninteractive session?
Sample public key:
pub 4096R/AAAAAAAA 2009-08-11 [expires: 2020-12-31]
uid Name (Comment) <email>
sub 4096g/BBBBBBBB 2009-12-25 [expires: 2010-12-31]
sub 4096R/CCCCCCCC 2010-09-25 [expires: 2010-11-30]
Sample script:
#!/bin/bash
gpg --quiet --batch --edit-key AAAAAAAA "key 1"; # Select subkey
BBBBBBBB (I also tried a value of "key 2")
cat afile | gpg --quiet --batch --hidden-recipient AAAAAAAA
--passphrase-file sfile --sign --encrypt - > newfile;
Note: It was not my decision to use two encryption subkeys, but I've been
requested to use each under certain circumstances. Also, anyone the copies/
pastes the above code should avoid the use of the `--passphrase-file` option
as I am only using this in testing.
Many thanks.
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