Ricoh Aficio mp c7501sp User manual

imagio MP C6001/C7501 series

Security Target

Author : RICOH COMPANY, LTD.

Date : 2011-09-15

Version : 1.00

Portions of imagio MP C6001/C7501 series Security Target are reprinted with

written permission from IEEE, 445 Hoes Lane, Piscataway, New Jerse

08855, from IEEE 2600.1, Protection Profile for Hardcopy Devices,

This document is a translation of the evaluated and certified security target

written in Japanese.

Page 1 of 89

Revision History

Version Date Author Detail

1.00 2011-09-15 RICOH COMPANY, LTD. Publication version.

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Table of Contents

ST Introduction ..................................................................................................................... 7

1.1 ST Reference .................................................................................................................. 7

1.2 TOE Reference ............................................................................................................... 7

1.3 TOE Overview................................................................................................................ 8

1.3.1 TOE Type ...................................................................................................................8

1.3.2 TOE Usage.................................................................................................................8

1.3.3 Major Security Features of TOE.............................................................................10

1.4 TOE Description........................................................................................................... 11

1.4.1 Physical Boundary of TOE ......................................................................................11

1.4.2 Guidance Documents...............................................................................................14

1.4.3 Definition of Users...................................................................................................15

1.4.3.1. Direct User........................................................................................................15

1.4.3.2. Indirect User.....................................................................................................16

1.4.4 Logical Boundary of TOE ........................................................................................17

1.4.4.1. Basic Functions ................................................................................................17

1.4.4.2. Security Functions............................................................................................20

1.4.5 Protected Assets.......................................................................................................22

1.4.5.1. User Data..........................................................................................................22

1.4.5.2. TSF Data...........................................................................................................23

1.4.5.3. Functions ..........................................................................................................23

1.5 Glossary........................................................................................................................23

1.5.1 Glossary for This ST................................................................................................23

Conformance Claim............................................................................................................. 27

2.1 CC Conformance Claim................................................................................................ 27

2.2 PP Claims..................................................................................................................... 27

2.3 Package Claims............................................................................................................ 27

2.4 Conformance Claim Rationale ..................................................................................... 28

2.4.1 Consistency Claim with TOE Type in PP...............................................................28

2.4.2 Consistency Claim with Security Problems and Security Objectives in PP .........28

2.4.3 Consistency Claim with Security Requirements in PP..........................................29

Security Problem Definitions.............................................................................................. 32

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3.1 Threats .........................................................................................................................32

3.2 Organisational Security Policies.................................................................................. 33

3.3 Assumptions................................................................................................................. 33

Security Objectives.............................................................................................................. 35

4.1 Security Objectives for TOE......................................................................................... 35

4.2 Security Objectives of Operational Environment........................................................ 36

4.2.1 IT Environment .......................................................................................................36

4.2.2 Non-IT Environment ...............................................................................................37

4.3 Security Objectives Rationale...................................................................................... 38

4.3.1 Correspondence Table of Security Objectives.........................................................38

4.3.2 Security Objectives Descriptions ............................................................................39

Extended Components Definition....................................................................................... 43

5.1 Restricted forwarding of data to external interfaces (FPT_FDI_EXP) ....................... 43

Security Requirements........................................................................................................ 45

6.1 Security Functional Requirements.............................................................................. 45

6.1.1 Class FAU: Security audit.......................................................................................45

6.1.2 Class FCS: Cryptographic support .........................................................................48

6.1.3 Class FDP: User data protection ............................................................................49

6.1.4 Class FIA: Identification and authentication.........................................................54

6.1.5 Class FMT: Security management..........................................................................57

6.1.6 Class FPT: Protection of the TSF............................................................................63

6.1.7 Class FTA: TOE access............................................................................................64

6.1.8 Class FTP: Trusted path/channels..........................................................................64

6.2 Security Assurance Requirements............................................................................... 64

6.3 Security Requirements Rationale................................................................................ 65

6.3.1 Tracing .....................................................................................................................65

6.3.2 Justification of Traceability.....................................................................................67

6.3.3 Dependency Analysis...............................................................................................73

6.3.4 Security Assurance Requirements Rationale.........................................................75

TOE Summary Specification............................................................................................... 76

7.1 Audit Function ............................................................................................................. 76

7.2 Identification and Authentication Function ................................................................ 78

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7.3 Document Access Control Function ............................................................................. 80

7.4 Use-of-Feature Restriction Function ........................................................................... 82

7.5 Network Protection Function....................................................................................... 83

7.6 Residual Data Overwrite Function.............................................................................. 83

7.7 Stored Data Protection Function ................................................................................. 84

7.8 Security Management Function .................................................................................. 84

7.9 Software Verification Function .................................................................................... 89

7.10 Fax Line Separation Function ..................................................................................... 89

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List of Figures

Figure 1 : Example of TOE Environment .......................................................................................................9

Figure 2 : Hardware Configuration of the TOE ............................................................................................12

Figure 3 : Logical Scope of the TOE ............................................................................................................17

List of Tables

Table 1 : Identification Information of TOE ...................................................................................................7

Table 2 : Definition of Users.........................................................................................................................15

Table 3 : List of Administrative Roles ..........................................................................................................15

Table 4 : Definition of User Data..................................................................................................................22

Table 5 : Definition of TSF Data...................................................................................................................23

Table 6 : Specific Terms Related to This ST.................................................................................................23

Table 7 : Rationale for Security Objectives...................................................................................................38

Table 8 : List of Auditable Events.................................................................................................................46

Table 9 : List of Cryptographic Key Generation...........................................................................................49

Table 10 : List of Cryptographic Operation ..................................................................................................49

Table 11 : List of Subjects, Objects, and Operations among Subjects and Objects (a).................................50

Table 12 : List of Subjects, Objects, and Operations among Subjects and Objects (b).................................50

Table 13 : Subjects, Objects and Security Attributes (a)...............................................................................50

Table 14 : Rules to Control Operations on Document Data and User Jobs (a) .............................................51

Table 15 : Additional Rules to Control Operations on Document Data and User Jobs (a)............................52

Table 16 : Subjects, Objects and Security Attributes (b)...............................................................................53

Table 17 : Rule to Control Operations on MFPApplications (b)..................................................................53

Table 18 : List of Authentication Events of Basic Authentication.................................................................54

Table 19 : List of Actions for Authentication Failure....................................................................................54

Table 20 : List of Security Attributes for Each User That Shall Be Maintained ...........................................55

Table 21 : Rules for Initial Association of Attributes....................................................................................57

Table 22 : User Roles for Security Attributes (a)..........................................................................................58

Table 23 : User Roles for Security Attributes (b)..........................................................................................59

Table 24 : Authorised Identified RolesAllowed to Override Default Values................................................60

Table 25 : List of TSF Data...........................................................................................................................61

Table 26 : List of Specification of Management Functions...........................................................................62

Table 27 : TOE Security Assurance Requirements (EAL3+ALC_FLR.2)....................................................64

Table 28 : Relationship between Security Objectives and Functional Requirements ...................................66

Table 29 : Results of Dependency Analysis of TOE Security Functional Requirements..............................73

Table 30 : List of Audit Events......................................................................................................................76

Table 31 : List of Audit Log Items................................................................................................................77

Table 32 : Unlocking Administrators for Each User Role.............................................................................79

Table 33 : Stored Documents Access Control Rules for Normal Users ........................................................81

Table 34 : Encrypted Communications Provided by the TOE ......................................................................83

Table 35 : List of Cryptographic Operations for Stored Data Protection......................................................84

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Table 36 : Management of TSF Data ............................................................................................................85

Table 37 : List of Static Initialisation for Security Attributes of Document Access Control SFP.................88

Page 7 of 89

1 ST Introduction

This section describes ST Reference, TOE Reference, TOE Overview and TOE Description.

1.1 ST Reference

The following are the identification information of this ST.

Title : imagio MP C6001/C7501 series Security Target

Version : 1.00

Date : 2011-09-15

Author : RICOH COMPANY, LTD.

1.2 TOE Reference

This TOE is identified by the following: digital multi function product (hereafter "MFP"), Fax Controller

Unit (hereafter "FCU"), Security Card (residual data overwrite option), and HDD Encryption Card, all of

which constitute the TOE. The MFP is identified by its product name and version. MFP versions consist of

software and hardware versions. The FCU and the Security Card are identified by their respective names and

versions. The HDD Encryption Card is identified by its name. Table 1 shows the identification information

of the TOE.

Table 1 : Identification Information of TOE

Names Versions

MFPs

Software

System/Copy 1.03

Network Support 9.62

Scanner 01.05

Printer 1.03

Fax 02.00.00

RemoteFax 02.00.00

Web Support 1.04

Web Uapl 1.01

NetworkDocBox 1.01

animation 1.00

RPCS 3.10.6

- Ricoh imagio MP C6001 SP

- Ricoh imagio MP C7501 SP

RPCS Font 1.00

Page 8 of 89

Names Versions

Engine 1.07:06

OpePanel 1.04

LANG0 1.03

LANG1 1.03

Hardware

Ic Key 01020700

Ic Ctlr 03

Options

FCU name imagio Fax Unit Type23 GWFCU3-18(WW) 02.00.00

Security Card name imagio Security Card Type7 Data Erase Opt 1.01x

HDD Encryption Card

name imagio HDD Encryption Card

Type7

Keywords : Digital MFP, Documents, Copy, Print, Scanner, Network, Office, Fax

1.3 TOE Overview

This section defines TOE Type, TOE Usage and Major Security Features of TOE.

1.3.1 TOE Type

This TOE is a digital multi function product (hereafter "MFP"), which is an IT device that inputs, stores, and

outputs documents.

1.3.2 TOE Usage

The operational environment of the TOE is illustrated below and the usage of the TOE is outlined in this

section.

Page 9 of 89

Figure 1 : Example of TOE Environment

The TOE is used by connecting to the local area network (hereafter "LAN") and telephone lines, as shown in

Figure 1. Users can operate the TOE from the Operation Panel of the TOE or through LAN communications.

Below, explanations are provided for the MFP, which is the TOE itself, and hardware and software other

than the TOE.

MFP

A machinery that is defined as the TOE. The MFP is connected to the office LAN, and users can perform the

following operations from the Operation Panel of the MFP:

- Various settings for the MFP,

- Copy, fax, storage, and network transmission of paper documents,

- Print, fax, network transmission, and deletion of the stored documents.

Also, the TOE receives information via telephone lines and can store it as a document.

LAN

Network used in the TOE environment.

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Client computer

Performs as a client of the TOE if it is connected to the LAN, and users can remotely operate the MFP from

the client computer. The possible remote operations from the client computer are as follows:

- Various settings for the MFP using a Web browser installed on the client computer,

- Operation of documents using a Web browser installed on the client computer,

- Storage and printing of documents using the printer driver installed on the client computer,

- Storage and faxing of documents using the fax driver installed on the client computer.

Telephone line

A public line for the TOE to communicate with external faxes.

Firewall

A device to prevent the office environment from network attacks via the Internet.

FTP Server

A server used by the TOE for folder transmission of the stored documents in the TOE to its folders.

SMB Server

A server used by the TOE for folder transmission of the stored documents in the TOE to its folders.

SMTP Server

A server used by the TOE for e-mail transmission of the stored documents in the TOE.

External Authentication Server

A server that identifies and authenticates the TOE user with Windows authentication (Kerberos

authentication method). This server is only used when External Authentication is applied. The TOE

identifies and authenticates the user by communicating with the external authentication server via LAN.

RC Gate

An IT device used for @Remote. The function of RC Gate for @Remote is to relay communications

between the MFP and maintenance centre. A transfer path to other external interface for input information

from the RC Gate via network interface is not implemented in the TOE. The RC Gate products include

Remote Communication Gate A, Remote Communication Gate Type N, and Remote Communication Gate

Type L.

1.3.3 Major Security Features of TOE

The TOE stores documents in it, and sends and receives documents to and from the IT devices connected to

the LAN. To ensure provision of confidentiality and integrity for those documents, the TOE has the

following security features:

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- Audit Function

- Identification and Authentication Function

- Document Access Control Function

- Use-of-Feature Restriction Function

- Network Protection Function

- Residual Data Overwrite Function

- Stored Data Protection Function

- Security Management Function

- Software Verification Function

- Fax Line Separation Function

1.4 TOE Description

This section describes Physical Boundary of TOE, Guidance Documents, Definition of Users, Logical

Boundary of TOE, and Protected Assets.

1.4.1 Physical Boundary of TOE

The physical boundary of the TOE is the MFP, which consists of the following hardware components

(shown in Figure 2): Operation Panel Unit, Engine Unit, Fax Unit, Controller Board, HDD, Ic Ctlr, Network

Unit, USB Port, SD Card Slot, and SD Card.

Page 12 of 89

Figure 2 : Hardware Configuration of the TOE

Controller Board

The Controller Board is a device that contains Processors, RAM, NVRAM, Ic Key, and FlashROM. The

Controller Board sends and receives information to and from the units and devices that constitute the MFP,

and this information is used to control the MFP. The information to control the MFP is processed by the

MFP Control Software on the Controller Board. The following describes the components of the Controller

Board:

- Processor

A semiconductor chip that performs basic arithmetic processing for MFP operations.

- RAM

A volatile memory medium which is used as a working area for image processing such as

compressing/decompressing the image data. It can also be used to temporarily read and write

internal information.

- NVRAM

A non-volatile memory medium in which TSF data for configuring MFP operations is stored.

- Ic Key

A security chip that has the functions of random number generation, cryptographic key generation

Page 13 of 89

and digital signature. It has the memory medium inside, and the signature root key is installed

before the TOE is shipped.

- FlashROM

A non-volatile memory medium in which the following software components are installed:

System/Copy, Network Support, Scanner, Printer, Fax, RemoteFax, Web Support, Web Uapl,

NetworkDocBox, animation, RPCS, RPCS Font, LANG0, and LANG1. These are part of the TOE

and are included in the MFP Control Software.

Operation Panel Unit (hereafter "Operation Panel")

The Operation Panel is a user interface installed on the TOE and consists of the following devices: key

switches, LED indicators, an LCD touch screen, and Operation Control Board. The Operation Control Board

is connected to the key switches, LED indicators, and LCD touch screen. The Operation Panel Control

Software is installed on the Operation Panel Control Board. The Operation Panel Control Software performs

the following:

1. Transfers operation instructions from the key switches and the LCD touch screen to the

Controller Board.

2. Controls the LEDs and displays information on the LCD touch screen according to display

instructions from the Controller Board.

OpePanel, which is one of the components that constitute the TOE, is the identifier for the Operation Panel

Control Software.

Engine Unit

The Engine Unit consists of Scanner Engine that is an input device to read paper documents, Printer Engine

that is an output device to print and eject paper documents, and Engine Control Board. The Engine Control

Software is installed in the Engine Control Board. The Engine Control Software sends status information

about the Scanner Engine and Printer Engine to the Controller Board, and operates the Scanner Engine or

Printer Engine according to instructions from the MFP Control Software. Engine, which is one of the

components that constitute the TOE, is the identifier for the Engine Control Software.

Fax Unit

The Fax Unit is a unit that has a modem function for connection to a telephone line. It also sends and

receives fax data to and from other fax devices using the G3 standard for communication. The Fax Unit

sends and receives control information about the Controller Board and Fax Unit and fax data. FCU, which is

one of the components that constitute the TOE, is the identifier of the Fax Unit.

HDD

The HDD is a hard disk drive that is a non-volatile memory medium. It stores documents, login user names

and login passwords of normal users.

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Ic Ctlr

The Ic Ctlr is a board that implements data encryption and decryption functions. It is provided with functions

for HDD encryption realisation.

Network Unit

The Network Unit is an external interface to an Ethernet (100BASE-TX/10BASE-T) LAN.

USB Port

The USB Port is an external interface to connect a client computer to the TOE for printing directly from the

client computer. During installation, this interface is disabled.

SD Card/SD Card Slot

The SD Card is a memory medium in which Data Erase Opt (MFP Control Software) are stored. When used,

the SD Card is inserted into the SD Card Slot that is inside the MFP. Only the customer engineer is allowed

to open the cover and insert the SD Card into the SD Card Slot during installation.

1.4.2 Guidance Documents

The document sets of this TOE are as follows:

- imagio MP C7501/C6001 series Operating Instructions <About This Machine> D081-7603

- imagio MP C7501/C6001 series Operating Instructions <Troubleshooting> D081-7630

- imagio MP C7501/C6001 series Operating Instructions <Copy Function & Document Server Function>

D081-7620

- imagio MP C7501/C6001 series Quick guide <Fax Function> D498-8501

- imagio MP C7501/C6001 series Quick guide <Network & System Settings> D081-7640

- imagio MP C7501/C6001 series Quick guide <Security Reference> D081-7645

- App2Me Start Guide D085-7902

- Notes for Users D081-7614A

- Operating Instructions Drivers&Utilities imagio MP C6001/C6001SP/C7501/C7501SP

D081-7700A

- imagio Security Card Type7 imagio Security Card Type9 Operating Instructions D377-7902

- To Users of This Machine D029-7909

- To Users of This Machine D060-7785

- imagio MP C7501/C6001 series Operating Instructions <Notes on Security Functions>

D081-7685

- Notes for Administrators: using this Machine in a Network Environment Compliant with IEEE Std.

2600.1TM-2009 D081-7684

- Help 83NHBNJAR1.10 v110

Page 15 of 89

1.4.3 Definition of Users

This section defines the users related to the TOE. These users include those who routinely use the TOE

(direct users) and those who do not (indirect users). The direct users and indirect users are described as

follows:

1.4.3.1. Direct User

The "user" referred to in this ST indicates a direct user. This direct user consists of normal users,

administrators, and RC Gate. The following table (Table 2) shows the definitions of these direct users.

Table 2 : Definition of Users

Definition of

Users Explanation

Normal user A user who is allowed to use the TOE. A normal user is provided with a login user

name and can use Copy Function, Fax Function, Scanner Function, Printer Function,

and Document Server Function.

Administrator A user who is allowed to manage the TOE. An administrator performs management

operations, which include issuing login names to normal users.

RC Gate

An IT device connected to networks. RC Gate performs the @Remote Service Function

of the TOE via RC Gate communication interface. Copy Function, Fax Function,

Scanner Function, Printer Function, Document Server Function, and Management

Function cannot be used.

The administrator means the user registered for TOE management. According to its roles, the administrator

can be classified as the supervisor and the MFP administrator. Up to four MFP administrators can be

registered and selectively authorised to perform user management, machine management, network

management, and file management. Therefore, the different roles of the management privilege can be

allocated to multiple MFP administrators individually. The "MFP administrator" in this ST refers to the MFP

administrator who has all management privileges (Table 3).

Table 3 : List of Administrative Roles

Definition of

Administrator Management Privileges Explanation

Supervisor Supervisor Authorised to delete and register the login

password of the MFP administrator.

User management privilege Authorised to manage normal users. This

privilege allows configuration of normal user

settings.

MFP administrator

Machine management

privilege

Authorised to specify MFP device behaviour

(network behaviours excluded). This privilege

allows configuration of device settings and

view of the audit log.

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Network management

privilege

Authorised to manage networks and configure

LAN settings. This privilege allows

configuration of network settings.

File management privilege Authorised to manage stored documents. This

privilege allows access management of stored

documents.

1.4.3.2. Indirect User

Responsible manager of MFP

The responsible manager of MFP is a person who is responsible for selection of the TOE administrators in

the organisation where the TOE is used.

Customer engineer

The customer engineer is a person who belongs to the organisation which maintains TOE operation. The

customer engineer is in charge of installation, setup, and maintenance of the TOE.

Page 17 of 89

1.4.4 Logical Boundary of TOE

The Basic Functions and Security Functions are described as follows:

Figure 3 : Logical Scope of the TOE

1.4.4.1. Basic Functions

The overview of the Basic Functions is described as follows:

Copy Function

The Copy Function is to scan paper documents and copy scanned image data from the Operation Panel.

Magnification and other editorial jobs can be applied to the copy image. It can also be stored on the HDD as

a Document Server document.

Page 18 of 89

Printer Function

The Printer Function of TOE is to print or store the documents the TOE receives from the printer driver

installed on the client computer. It also allows users to print and delete the stored documents from the

Operation Panel or a Web browser.

- Receiving documents from the printer driver installed on the client computer.

The TOE receives documents from the printer driver installed on the client computer. Printing

methods for documents is selected by users from the printer driver. The printing methods include

direct print, Document Server storage, locked print, stored print, hold print, and sample print.

For direct print, documents received by the TOE will be printed. The documents will not be stored

in the TOE.

For Document Server storage, the received documents will be stored on the HDD as Document

Server documents.

For locked print, stored print, hold print, and sample print, the received documents will be stored

on the HDD as printer documents. A dedicated password, which is used for locked print, is not

subject to this evaluation.

- Operating from the Operation Panel

The TOE can print or delete printer documents according to the operations by users from the

Operation Panel.

- Operating from a Web browser

The TOE can print or delete printer documents according to the operations by users from a Web

browser.

- Deleting printer documents by the TOE

The deletion of printer documents by the TOE differs depending on printing methods. If locked

print, hold print, or sample print is specified, the TOE deletes printer documents when printing is

complete. If stored print is specified, the TOE does not delete printer documents even when

printing is complete.

According to the guidance document, users first install the specified printer driver on their own client

computers, and then use this function.

Scanner Function

The Scanner Function is to scan paper documents by using the Operation Panel. The scanned documents will

be sent to folders or by e-mail. The documents to be sent to folders or by e-mail will be stored in the TOE, so

that they can be transmitted afterwards. The documents stored in the TOE are called scanner documents.

Scanner documents can be sent to folders or by e-mail, or deleted from the Operation Panel or a Web

browser.

Folder transmission can be applied only to the destination folders in a server that the MFP administrator

pre-registers in the TOE and with which secure communication can be ensured. E-mail transmission is

possible only with the mail server and e-mail addresses that the MFP administrator pre-registers in the TOE

and with which secure communication can be ensured.

Page 19 of 89

Fax Function

The Fax Function is to send paper documents and documents received from the fax driver installed on the

client computer to external faxes (Fax Transmission Function). Also, this function can be used to receive

documents from external faxes (Fax Reception Function).

Documents to be sent by fax can be stored in the TOE. Those documents stored in the TOE for fax

transmission are called fax documents. Fax documents can be sent by fax, and they also can be printed,

deleted, and sent to folders.

The documents received by fax can be stored in the TOE, printed, deleted from the TOE, and downloaded to

the client computer.

- Fax Transmission Function

A function to send paper documents, documents in the client computer, and fax documents to

external faxes over a telephone line.

Paper documents will be scanned and sent by fax using the Operation Panel. The documents in the

client computer are sent by fax from the fax driver installed on the client computer. Fax documents

are sent by fax from the Operation Panel or a Web browser. Documents can be sent by fax only to

the telephone numbers that are pre-registered in the TOE.

- Fax Data Storage Function

A function to temporarily store paper documents or documents in the client computer for fax

transmission in the TOE. Those documents stored in the TOE are called fax documents. Paper

documents will be scanned and stored using the Operation Panel. The documents in the client

computer are sent to and stored in the TOE by operating the fax driver installed on the client

computer.

- Operation Function for Fax Documents

A function to print or delete fax documents. This function can be used from the Operation Panel or

a Web browser.

- Folder Transmission Function of Fax Data

A function to send fax documents to folders by using the Operation Panel.

The MFP administrator must pre-register the destination server that provides secure

communication with the TOE. Users select the destination server from the servers that the MFP

administrator pre-registers, and send data to the folder.

- Fax Reception Function

A function to receive documents from external faxes via the telephone line and store the received

documents in the TOE. Those stored documents in the TOE are called received fax documents.

- Operation Function for Received Fax Documents

A function to operate the received fax documents from the Operation Panel or a Web browser.

Documents can be printed and deleted using the Operation Panel, while they can be printed, deleted

and downloaded from a Web browser.

According to the guidance document, users first install the specified fax driver on their own client computers,

and then use this function.

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