Red Hat DIRECTORY SERVER 8.1 - 11-01-2010 Uživatelský manuál stáhnout pdf (Strana 36)

If you now click on Export Secret Keys, the exported file will contain your whole

key pair (secret key and public key). If you click on Cancel instead, the

exported file will contain your public key only.

Be careful on how you export your key pair!

When backing it up, you must include the secret key, or the backup

will be useless. When exporting in order to distribute your public key

(as will be explained in Section 7.4.1. ), make sure you do not include

the secret key, or you'll compromise your key pair.

Since you're making a backup, click on Export Secret Keys, then choose where

to save the file. Your key pair will be saved as an ASC file named like that:

Firstname Lastname [email protected] (0x89ABCDEF) pub-sec.asc.

As you see, the filename is composed of the primary user ID of the key, the key

ID, and the word “pub-sec” indicating that this is a key pair. Store this file in an

external hard disk, keep it in a safe place and don't pass it to anybody.

7.4. Distributing your public key

Now that you have a key pair, you must distribute your public key around. This

is necessary so people can use it to send you encrypted messages and verify

the signature on messages you send. You can do this manually and/or by the

means of a public keyserver.

7.4.1. Share your public key manually

On the Key Management window, select your key pair and click on File →

Export Keys to File. Again, you will be asked whether you want to include your

secret key in the saved OpenPGP key file: make sure you click on Cancel this

time. Save the ASC file, which will have a name like

Firstname Lastname [email protected] (0x89ABCDEF) pub.asc.

This is a copy of your public key; notice the “pub” word at the end of the

filename.

You can now put the file on your website for people to download it, or carry it

around in a USB drive to distribute it to people, or send it via email as an

attachment.

Concerning this last option, there is a simple Enigmail shortcut for it: when

writing your mail in the Message Composition window, simply choose

OpenPGP → Attach my Public key and you will see your public key appear as

an attachment of the message you're composing.

Note: if you use Enigmail 0.96.0, this command does not work well due to a

bug. Instead, choose OpenPGP → Attach Public key... (which allows you to

attach to the message any key of your public keyring), then in the Key Selection

window select your own public key and click Ok.

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Red Hat DIRECTORY SERVER 8.1 - 11-01-2010 Uživatelský manuál Strana 36