Suse Linux Professional 9.2 Upgrade [Strong Encryption 128 Bit] 00662644457260 User Manual
Product codes
00662644457260
12.11.2
Checking the Signature of a Received Message
If KMail is able to verify the signature of an e-mail, a green frame with the key ID
is displayed. If the signature cannot be verified, a yellow frame with an alert is
displayed. This means that you do not have a suitable public key for the signa-
ture.
is displayed. If the signature cannot be verified, a yellow frame with an alert is
displayed. This means that you do not have a suitable public key for the signa-
ture.
12.11.3
Sending Public Keys
Create a message for the person who should receive your public key. Then select
‘Attach’ ➝ ‘Attach Public Key’. The mail can now be sent. There is no guarantee
that the recipient of a signed message receives the correct key. It is possible for
the mail to be intercepted on the way to the recipient and signed with another
key. Therefore, the recipient should check the attached key by comparing the fin-
ger print with a previously received value. Further information about this can be
found in the PGP and GnuPG documentation.
‘Attach’ ➝ ‘Attach Public Key’. The mail can now be sent. There is no guarantee
that the recipient of a signed message receives the correct key. It is possible for
the mail to be intercepted on the way to the recipient and signed with another
key. Therefore, the recipient should check the attached key by comparing the fin-
ger print with a previously received value. Further information about this can be
found in the PGP and GnuPG documentation.
12.11.4
Decrypting Messages
In KMail, select the message to decrypt. Enter your password when prompted.
KMail attempts to decrypt the message. If it was encrypted with your public key,
KMail displays it in clear text. If not, you cannot read the e-mail message. KMail
saves these e-mail messages in encrypted form to prevent anyone from reading
them without your password.
KMail attempts to decrypt the message. If it was encrypted with your public key,
KMail displays it in clear text. If not, you cannot read the e-mail message. KMail
saves these e-mail messages in encrypted form to prevent anyone from reading
them without your password.
12.11.5
Encrypting Messages
To send an encrypted message to a recipient for whom you have the public key,
simply write the message in the ‘Create Message’ window. Before sending the
message, click the red key icon in the window’s toolbar. Now the message can be
sent. If KMail cannot find a key for the recipient, a list with all available keys is
shown. Select the appropriate one from the list or abort the process. KMail also
informs you if errors occur during the encryption process. You cannot read en-
crypted messages if you did not click ‘Always encrypt to self’ in the ‘Security’
tab.
simply write the message in the ‘Create Message’ window. Before sending the
message, click the red key icon in the window’s toolbar. Now the message can be
sent. If KMail cannot find a key for the recipient, a list with all available keys is
shown. Select the appropriate one from the list or abort the process. KMail also
informs you if errors occur during the encryption process. You cannot read en-
crypted messages if you did not click ‘Always encrypt to self’ in the ‘Security’
tab.
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12.11. Encrypting Mail with PGP or GnuPG