A last word on --passphrase-fd
James H. Cloos Jr.
21 Jan 2000 19:42:37 -0600
>>>>> "Chuck" == Chuck Robey <email@example.com> writes:
Chuck> How does either of your two options deal with a process started
Chuck> on a regular basis by cron? No daemon to store the passphrase
Chuck> in ram with, and impossible to make interactive input.
The trick might be to have the cron daemon itself act as the daemon
storing the passphrase. It would provide the process w/ a FD to read
the passphrase from; the process can then pipe that direct to the gpg
Another option is to have the daemon sleeping in the background, and
use cron to send it a wakeup signal. Again, it has the phrase in RAM
and can pass it to gpg via a pipe.
I've not spent much time (ie more than a few seconds) thinking about
the security issues of these proposals. Obviously of course the RAM
used to store the phrase must be mlock(2)ed (or the equivalent), but
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