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Ricoh Aficio SP C820DN Design Guide - Page 81

Network Functions, 2-4 Printer Functions, 2-5 Machine Administrative Functions MFP models only,

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Print Controller Design Guide for Information Security 4-2-3 Network Functions As mentioned above, a Type 1 SDK application is able to perform network communication either by using the NCS or by opening and closing its own unique socket. Since Type 2 applications are Java-based, they must use the network classes provided by Sun Microsystems, and are therefore restricted to socket-based network communication. 4-2-4 Printer Functions SDK applications are able to make use of a printer data filter, which allows the application to edit the incoming printing data received by the MFP/LP, convert it to a different PDL, and change job control commands such as the paper tray selection or printing mode. Following this, the SDK application sends the edited PDL data to the printer port of the loop-back address (the 127.0.0.1 local address), which the MFP/LP Printer function then receives just as if the PDL data had come directly from an external source. The data then follows the normal flow described in section 2.2 and is printed out by the printing engine. 4-2-5 Machine Administrative Functions (MFP models only) In addition to the principal machine functions of the MFP (e.g. Printer, GWWS), once installed, the SDK application can be selected in the "Function Priority Setting" so that it its screen is displayed when the main power is turned ON and the MFP reaches the Ready condition. It is possible to create a user interface for communication with a network-connected authentication server in order to authenticate individual machine users, thereby restricting the use of the application. The user interface can be customized for each individual user, and will automatically log out the user and return to the default screen if no operations have been performed after a certain amount of time has passed. It is also possible to maintain a machine usage log. The SDK application creates the log files and writes them to the SDK area of the HDD. SDK applications are able to obtain, edit, delete, and add user information via the DMP (Device Management Package). The DMP enables this functionality by using the GWWS function as a Java Web service client. Java applications on the PC are also able to use the DMP, making it possible to perform changes to the Address Book from a PC. 4-2-6 Authentication Functions The AP (Authentication Package) module is installed on the machine as a standard feature. This module allows the user to do the following: Use SDK applications in conjunction with the IC Card Authentication explained in section 1.5.2. Page 81 of 86

Section	Page
04/23/2010	1
For these details, please refer to the Operating Instructions for the specific machine in question.	6
Hardware Configuration	7
MFP	7
LP	9
TPM (Trusted Platform Module): When the MFP/LP main power is turned on, this security module (chip) performs a verification on the validity of the software installed on the hardware platform, which includes checking for any illegal alterations.	10
Shared Service Layers	11
Principal Machine Functions	12
Data Security	14
External I/F	14
Protection of Program Data from Illegal Access via an External Device	14
IC card-based authentication functions: Authentication is mutual and encrypted, which prevents impersonation and ensures that data is properly protected.	16
Firmware Installation/Update	17
Remote Firmware Installation via Web SmartDeviceMonitor Professional IS (performed by the end user)	19
Verification of Firmware/Program Validity	20
Note: Produced by STMicroelectronics, TPM is a product of the ST19WP18 family, which has earned Common Criteria certification (EAL5+).	20
Authentication	21
IC Card Authentication	24
Access Control	25
In addition, it is possible to create an access control list (ACL) for each individual Address Book entry and Document Server document at both the individual user and group levels.	25
If the MLP/LP is initialized in this way, all of the user information, document data, and settings stored in the MLP/LP since installation will be initialized (erased).	26
Data Erase/Overwrite	27
To execute the overwrite, the operator can choose from two options: \	28
The execution of this feature does not clear engine-related information such as the value of the total counter, or engine-related adjustment settings contained in SP mode and UP mode.	28
Through this arrangement, the copy of the HDD storage key is automatically decrypted once the Encryption Key Restore has been completed.	31
Document Server Documents (MFP models only)	33
Access Privileges and Operations for Stored Documents	34
Without HDD: 500 entries	38
Overview of Capture Operations	39
Operations that Generate Captured Images	39
Capture Settings	41
Security Considerations	42
Captured Documents and Log Data	42
Additional Methods for Increased Security	42
(Authentication not required)	42
Copier (MFP Models Only)	43
Overview of Copier Operations	43
Data Security Considerations	43
Protection of Copy Jobs in Progress	43
Protection of Document Server Documents	43
Refer to 1.7.2 Document Server Documents (MFP models only) for details on the Document Lock feature.	44
Restricting the Available Functions for Each Individual User	45
Job/Access Log Data Collection	45
Print Backup	45
(printing out, editing, copying).	46
Overview of Printer Operations	47
Data Flow	47
Data Security Considerations	51
The \	53
Overview of Scanner Operations	54
Data Flow Security Considerations	54
Protection of Data when Performing Scanning and Sending Operations	55
Protection of Document Server Documents	56
Protection of Sending Results and Status Information	57
Protection of the Scanner Features Settings	57
Data Stored in the Job Log	58
Terminology	58
FTP (File Transfer Protocol): A protocol used when transferring files over a TCP/IP network.	58
Overview of FAX operations	59
Data Security Considerations	60
Protection of the Journal and Documents in Document Server Storage	61
Protection of FAX Transmission Operations	61
Protection of FAX Features Settings	62
The \	62
Job Log	62
Protection of Internet FAX Transmissions using S/MIME	62
Preventing FAX Transmission to Unintended Destination(s)	63
This prevents a FAX from being sent to an unintended destination when, for example, the operator accidentally touches an additional Quick Dial key.	63
Overview of NetFile Operations	64
Data Flow	65
Supplementary	65
Network Topology for a System Using Integration Server Authentication (Sample)	66
As long as the track ID is not stolen from the communication path between the PC and MFP/LP (which can be protected against by enabling SSL encryption) or from the PC itself, it is impossible to perform any unauthorized operations on these print jobs	68
Web Server Framework	69
WebDocBox (MFP models only)	70
For more details on job and access logs, please refer to 1.9 Job/Access Logs.	72
@Remote	73
Overview of @Remote Operations	73
Data Security Considerations	73
Security is increased even further by the fact that the symmetric key used is not a static key, but rather one that is generated every time a new session is initiated.	73
Overview of Copy Data Security Operations	74
Data Flow	75
Following this, an entry for the event itself is stored in the access log, along with the username.	75
Overview of Operations	77
1	77
Overview of SDK Application Functions	79
3: DSDK Œ MFP/LP Hardware Configuration	79
Scanning Functions: Sending Data Over the Network with the Copier and Scanner (MFP models only)	80
FAX Functions (MFP models only)	80
Network Functions	81
Printer Functions	81
Machine Administrative Functions (MFP models only)	81
Authentication Functions	81
Data Security Considerations	83
Preventing the Installation of Illegal Applications	83
Authentication of SDK Applications at Installation	83
Prevention of Access to Address Book Data and Machine Management Data	85
Protection Against Attacks on Principal MFP/LP Functions, Prevention of Damage to the System	85
Protection Against Attacks from External Sources	85

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Print Controller Design Guide for Information Security

Page 81 of 86

4-2-3 Network Functions

As mentioned above, a Type 1 SDK application is able to perform network communication either by

using the NCS or by opening and closing its own unique socket. Since Type 2 applications are

Java-based, they must use the network classes provided by Sun Microsystems, and are therefore

restricted to socket-based network communication.

4-2-4 Printer Functions

SDK applications are able to make use of a printer data filter, which allows the application to edit the

incoming printing data received by the MFP/LP, convert it to a different PDL, and change job control

commands such as the paper tray selection or printing mode. Following this, the SDK application

sends the edited PDL data to the printer port of the loop-back address (the 127.0.0.1 local address),

which the MFP/LP Printer function then receives just as if the PDL data had come directly from an

external source. The data then follows the normal flow described in section 2.2 and is printed out by

the printing engine.

4-2-5 Machine Administrative Functions (MFP models only)

In addition to the principal machine functions of the MFP (e.g. Printer, GWWS), once installed, the

SDK application can be selected in the “Function Priority Setting” so that it its screen is displayed when

the main power is turned ON and the MFP reaches the Ready condition.

It is possible to create a user interface for communication with a network-connected authentication

server in order to authenticate individual machine users, thereby restricting the use of the application.

The user interface can be customized for each individual user, and will automatically log out the user

and return to the default screen if no operations have been performed after a certain amount of time

has passed.

It is also possible to maintain a machine usage log. The SDK application creates the log files and

writes them to the SDK area of the HDD.

SDK applications are able to obtain, edit, delete, and add user information via the DMP (Device

Management Package). The DMP enables this functionality by using the GWWS function as a Java

Web service client. Java applications on the PC are also able to use the DMP, making it possible to

perform changes to the Address Book from a PC.

4-2-6 Authentication Functions

The AP (Authentication Package) module is installed on the machine as a standard feature. This

module allows the user to do the following:

Use SDK applications in conjunction with the IC Card Authentication explained in section 1.5.2.