Kyocera TASKalfa 5500i - Guidance; Table 1.2 Evaluatedw

TASKalfa 3500i, TASKalfa 4500i, TASKalfa 5500i
Data Security Kit (E) Overseas Version Security Target
© 2011 KYOCERA MITA Corporation
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Table 1.2 Evaluated Web browser
Web browsers supported by TOE Evaluated Web browser
- Microsoft Internet Explorer 7 or later
- Mozilla FireFox 3.5 or later
- Safari 4.0 or later
- Microsoft Internet Explorer 8.0
1.4.3.2. Security Functions provided by the TOE
The TOE provides the following functions as the security function.
- Encryption Function
There is an encryption function for a purpose of being against attacks of leakage
of the image data stored in the HDD.
When operating the basic functions such as the copy function, the network scan
function, the print function and the document management box function, MFP
stores image data in the HDD. The encryption function is a function that encrypts
and stores the image data when image data is stored in the HDD. The encryption
function also reads out the image data by decrypting the encrypted image data
when performing the above-mentioned basic functions, and when reading out the
image data stored in the HDD
A cryptographic key used for encryption is generated to be an identical and unique
number on the MFP basis, every time each MFP is powered on, and is stored in a
volatile memory. That is, the cryptography key is not stored inside the MFP in a
state that power of the MFP is turned off.
- Overwrite-Erase Function
In addition to the logical and conventional deletion process, there is the
overwrite-erase function for a purpose of further enhancing security.
After process of the basic functions such as the copy function, the network scan
function, the print function and the document management box function is
completed, or after the cancellation made by cancel operation during these
processing are completed, MFP deletes used image data in the HDD. The
overwrite-erase function is the function that logically deletes not only the
management information of the stored image data in the HDD, but also entirely
overwrites and erases the actual image data area so that it disables re-usage of
the data when receiving an instruction for deletion of the stored image data in the
HDD
1.4.4. Guidance
Guidance comprising this TOE is shown as below.