Red Hat DIRECTORY SERVER 8.1 - 11-01-2010 Manuel d'utilisateur télécharger pdf (Page 67)

/usr/local/bin/gpg for Linux.

If however Enigmail can't manage to find GnuPG, or you want to specify that

location manually, tick Override with and enter the path to the GnuPG

executable file.

Enigmail asks for your passphrase every time it needs to access your private

key, for instance whenever you sign, decrypt, or change your key pair

properties. It is often cumbersome to have to type the passphrase all the time,

and you might be tempted to choose a passphrase that's short and simple to

type, which is a bad idea. Instead, you should set Enigmail to save your

passphrase in the cache for a fixed time.

You can do this by entering the desired number of minutes in the field

Remember passphrase for [ ] minutes of idle time. In the figure, Enigmail will

not ask for the passphrase for 6 hours. Entering the value 0 in the field disables

password caching.

You will be asked again for the passphrase when one of these events occurs:

• The specified caching time has expired;

• You quit and restarted the mailclient;

• You flushed the passphrase cache via the command OpenPGP → Clear

Saved Passphrase.

Do not leave your computer unattended while the passphrase is

stored in the cache.

The passphrase caching mechanism is implemented in a safe way so it is not

accessible by other users or processes. However, if the mailclient is swapped

to disk, the passphrase is swapped to disk too. If you do not want this to

happen, do not use passphrase caching.

If your key pair is not protected by a passphrase, enable the option Never ask

for any passphrase to prevent Enigmail from asking your passphrase and

passing it to GnuPG.

The Reset button resets all Enigmail settings to their default value.

If you're using SeaMonkey 1.x, there will be also a button named Uninstall

Enigmail which uninstalls the Enigmail application altogether.

SeaMonkey 2.0 and Thunderbird do not show this button, as concerning these

mailclients Enigmail can be uninstalled like any other extension from Tools →

Add-ons → Extensions.

Finally, the Display Expert Settings / Hide Expert Settings toggle button permits

to access the expert preferences.

In Enigmail 0.96.0 and earlier, this button makes another button named

Advanced... appear (and disappear). Clicking on the Advanced... button opens

a separate window with the expert preferences, divided into five tabs: Sending,

Key Selection, Advanced, Keyserver, and Debugging.

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Red Hat DIRECTORY SERVER 8.1 - 11-01-2010 Manuel d'utilisateur Page 67