Este es un ejemplo de cómo funcionará el proceso. (Esta pantalla pertenece a un sistema Linux, no Windows.)

$ gpg --gen-key

gpg (GnuPG) 1.4.1; Copyright (C) 2001 Free Software Foundation, Inc.
This program comes with ABSOLUTELY NO WARRANTY.
This is free software, and you are welcome to redistribute it
under certain conditions. See the file COPYING for details.

gpg: /home/kjcole/.gnupg/secring.gpg: keyring created
gpg: /home/kjcole/.gnupg/pubring.gpg: keyring created
Please select what kind of key you want:
(1) DSA and ElGamal (default)
(2) DSA (sign only)
(4) ElGamal (sign and encrypt)
Your selection? 1
DSA keypair will have 1024 bits.
About to generate a new ELG-E keypair.
minimum keysize is 768 bits
default keysize is 1024 bits
highest suggested keysize is 2048 bits
What keysize do you want? (1024)
Requested keysize is 1024 bits
Please specify how long the key should be valid.
0 = key does not expire
<n> = key expires in n days
<n>w = key expires in n weeks
<n>m = key expires in n months
<n>y = key expires in n years
Key is valid for? (0) 1
Key expires at Fri Sep 20 16:18:17 2002 EDT
Is this correct (y/n) n
Key is valid for? (0)
Key does not expire at all
Is this correct (y/n) y

You need a User-ID to identify your key; the software constructs the user id
from Real Name, Comment and Email Address in this form:
"Heinrich Heine (Der Dichter) <heinrichh@duesseldorf.de>"

Real name: tu Nombre
Email address: direccion@servidor.xxx
Comment: Lo que quieras poner
You selected this USER-ID:
"tu Nombre (Lo que quieras poner) <direccion@servidor.xxx>"

Change (N)ame, (C)omment, (E)mail or (O)kay/(Q)uit? O
You need a Passphrase to protect your secret key.

Enter passphrase:
Repeat passphrase:

We need to generate a lot of random bytes. It is a good idea to perform
some other action (type on the keyboard, move the mouse, utilize the
disks) during the prime generation; this gives the random number
generator a better chance to gain enough entropy.
++++++++++.++++++++++.++++++++++.+++++.+++++++++++++++.+++++++++++++++.++++++++
++.++++++++++..+++++..+++++++++++++++++++++++++..++++++++++++++++++++..+++++

Not enough random bytes available. Please do some other work to give
the OS a chance to collect more entropy! (Need 171 more bytes)

We need to generate a lot of random bytes. It is a good idea to perform
some other action (type on the keyboard, move the mouse, utilize the
disks) during the prime generation; this gives the random number
generator a better chance to gain enough entropy.
.++++++++++++++++++++++++++++++++++++++++.++++++++++.+++++.+++++.++++++++++..++
++++++++.+++++++++++++++.+++++++++++++++++++++++++++++++++++>+++++.............
...............................................................................
..........................................+++++^^^
public and secret key created and signed.
$

Con esto has creado tu par de claves.

Para verificar que tu par de claves se ha generado de forma correcta, tecleamos:

gpg --list-keys

esto te dará un listado similar a este:

C:/Documents and Settings/usuario/Application Data/GnuPG\pubring.gpg
--------------------------------------------------------------------
pub 1024D/BB36BA75 2003-11-11 tu Nombre <direccion@servidor.xxx>
sub 4096g/1F5A0D8B 2003-11-11

Toma nota del numero que aparece en rojo más arriba. Este es tu KeyID.

El KeyID es un identificador único para cada clave generada con GnuPG y es el valor que te permitirá asignarla a las diferentes cuentas de correo de tu lector de correo electrónico, como veremos más adelante.

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