Kyocera Ecosys P4040dn Operation Manual page 168

Encryption:
01 AES
DES
02
3DES
03
SSL:
Off/On
01
Encryption
02
IPP over SSL (SSL Server IPP over SSL setting)
IPP over SSL is an encryption function that uses SSL for communications between users and servers in network printing.
To use IPP over SSL, both server and client must support the protocol. The default setting is On.
IPP over SSL:
Off
01
02 * On
2
Press [OK]. The Encryption screen appears.
Complete
3
Press  or  to select the encryption method to be used and then
press [OK].
The options available in Encryption are as follows:
• AES (SSL Server AES setting)
• DES
• 3DES
A hash symbol (g ) appears to the right of the selected encryption
method.
4
After completing the selection, press [Complete] ([Right Select]).
The selected encryption method is set and the SSL menu reappears.
Exit
1
In the SSL Setting menu, press  or  to select IPP over SSL.
2
Press [OK]. The IPP over SSL screen appears.
3
Press  or  to select whether IPP over SSL is enabled.
4
Press [OK]. The IPP over SSL setting is set and the SSL Setting
menu reappears.
AES (Advanced Encryption Standard) was developed to replace
DES as the standard encryption as the safety of DES has declined.
AES is a block encryption system that uses 128-bit blocks and an
SPN structure (a typical structure for repeated encryption) with
three selectable key lengths of 128, 192 and 256 bits.
DES (Data Encryption Standard) is a typical symmetric-key
cryptographic algorithm that divides data in to 64-bit blocks and
then encrypts each block using a 56-bit key.
IMPORTANT Symmetric-key cryptography, because it uses
the same key for both encryption and decryption, uses the
same key in both directions when encrypted data is
exchanged. Accordingly, to prevent the key from being
divulged, key transfer and storage must be very strictly
managed.
3DES (Triple Data Encryption Standard) is a high level of
encryption in which DES encryption is repeated threefold.
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Operation Panel