acs ACOSJ-G Java Card User Manual

acs ACOSJ-G Java Card

INTRODUCTION

Dear customer,
Thank you for purchasing our product. Please read the following instructions carefully before first use and keep this user manual for future reference. Pay particular attention to the safety instructions. If you have any questions or comments about the device, please contact the customer line.

Overview

The ACOSJ is a smart card operating system developed by Advanced Card Systems Ltd. It works based on the JAVA Card Virtual Machine and complies with GlobalPlatform Card Specification Version 2.2.1, JAVA Card Virtual Machine and complies with GlobalPlatform Card Specification Version 2.2.1, JAVA Card Specification Version 3.0.4 and Mapping Guidelines 1.0.1 on its functions and configurations. The purpose of this document is to describe in detail the features and functions of the ACOSJ smart card operating system.

ACOSJ-G Versions

·         Operating Voltage: 2.7V to 5.5V

ACOSJ v2.00

| ****

May 2018

| ·         95KB EEPROM

·         Operating voltage: 2.1V to 5.5V

·         Changes in the configuration memory address

ACOSJ v2.04

| ****

April

| ·         95KB EEPROM

·         Operating voltage: 2.1V to 5.5V

·         Changes in the configuration memory address

·         Features enhancement

Symbols and Abbreviations

Payment Systems

ENC| Encryption
FCI| File Control Information
HEX| Hexadecimal
HMAC| Keyed-Hash Message Authentication Code
ICC| Integrated Circuit Card
ICV| Initial Chaining Vector
IIN| Issuer Identification Number
INS| Instruction byte of the command message
ISO| International Organization for Standardization
Lc| Exact length of data in a case 3 or case 4 command
Le| Maximum length of data expected in response to a case 2 or case 4

command

LV| Length Value
MAC| Message Authentication Code
MEL| MULTOS Executable Language. The instruction set of the MULTOSTM

runtime environment

OID| Object Identifier
P1| Reference control parameter 1
P2| Reference control parameter 2
PIN| Personal Identification Number
PKI| Public Key Infrastructure
RAM| Random Access Memory
RFU| Reserved for Future Use
RID| Registered Application Provider Identifier
ROM| Read-only Memory
RSA| Rivest-only Memory
SCP| Secure Channel Protocol: or (ETSI) Smart Card Platform
SW| Status Word
SW1| Status Word One
SW2| Status Word Two
TLV| Tag Length Value
TP| Trust Point
“xx”| Hexadecimal values are expressed as hexadecimal digits between single

quotation marks.

“X”| A value in a cell of a table whose purpose is described in the “Meaning”

column of the table.

“-“| A value (0 or 1) in a cell of a table that does not affect the “Meaning” given

for that row of the table.

Card Specifications

Electrical Specifications

Environmental Specifications

Operating Temperature: -25°C to +85°C

Communication Protocols

T=CL protocol with baud up to 848 kbps

Memory

Capacity:| 95 KB (ACOSJ-G 2.04), 40 KB (ACOSJ-G

1.01)

---|---
EEPROM Endurance:| 500,000 erase/write cycles (25°C)
Data Retention:| 30 years (25°C)

Capacity: 95 KB (ACOSJ-G 2.04), 40 KB (ACOSJ-G 1.01)

Cryptographic Functionalities

bits

Hash:| SHA1, SHA256, SHA384, SHA512
SEED:| 128 bits

Compliance to Standards

• Compliance with ISO 7816 Part 4
• Compliance with ISO 14443 (Type A and B)
• Compliance with JAVA Card Specification Version 3.0.4
• Compliance with Global Platform Specification Version 2.2.1
• Compliance with Mapping Guidelines 1.0.1

Answer to Select (ATS, Contactless Card)
After receiving a Request for Answer to Select (RATS) command from the card reading device, the card transmits and Answer to Select (ATS) in compliance with ISO 14443 Part 4.
The following table shows the default ATS:

T7~T9

| 31h 30h 31h or

32h 30h 34h

|

Indicates “101” Or Indicates “204”

Card Life Cycle States

The ACOSJ has five card states: OP_READY, INTILIZED, SECURED, CARD_LOCKED and TEDMINATED. The figure below shows the card life cycle state transition:

OP_READY

This state indicates that the runtime environment shall be available and the Issuer Security Domain, acting as the selected Application, shall be ready to receive, execute and respond to APDU commands. The following functionalities shall be present when the card is in the state OP_READY:

• The runtime environment shall be ready for execution.
• The OPEN shall be ready for execution.
• The Issuer Security Domain shall be the implicitly selected Application for all card interfaces.
• Executable Load Files that were included in Immutable Persistent Memory shall be registered in the GlobalPlatform Registry.
• An initial key shall be available within the Issuer Security Domain.
• The card shall be capable of Card Content changes, the loading of the Load Files containing applications not already present in the card may occur.
• The installation, from Executable Load Files, of aby Application may occur.
• Additionally, if any personalization information is available at this stage, Applications may be personalized.
• The OP_READY state may be used by an off-card to perform the following actions:
• Supplementary Security Domains may be loaded and/or installed.
• The Security Domain keys may be inserted in order to maintain a cryptographic key separation from the Issuer Security Domain keys.

Initialized
This state is an administrative card production state. The state transition from OP_READY to INITIALIZED is irreversible. Its functionality is beyond the scope of this Specification. This state may be used to indicate that some initial data has been populated (e.g., Issuer Security Domain keys and/or data) but the card is not yet ready to be issued to the Cardholder.

Secured
This state is the intended operating card Life Cycle State in Post-Issuance. This state may be used by Security Domains and Applications to enforce their respective security policies. The state transition from INITIALIZED to SECURED is irreversible. The SECURED state should be used to indicate to off-card entities that the Issuer Security Domain contains all necessary keys and security elements for full functionality.

Card_Locked
The card Life Cycle state CARD_LOCKED is present to provide the capability to disable the selection of Security Domain and Applications. The card Life Cycle state transition from SECURED to CARD_LOCKED is reversible.
Setting the card to the CARD_LOCKED state means that the card shall only allow selection of the application with the Final Application privilege. Card Content changes, including any type of data management (specifically Security Domain keys and data), are not allowed in this state. Either the OPEN or a Security Domain with Card Lock privilege, or an Application with Card Lock privilege, may initiate the transition from the state SECURED to the state CARD_LOCKED.

TERMINATED
This state signals the end of the card Life Cycle and the card. The state transition from any other state to TERMINATED is irreversible. The state TERMINATED shall be used to permanently disable all card functionality with respect to any card content management and any life cycle changes. This card state is intended as a mechanism for an application to logically “destroy” the card for such reasons as the detection of severe security threat or expiration of the card. If a Security Domain has the Final Application privilege only the GET DATA command shall be processed, all other commands defined in this specification shall be disabled and shall return an error. Id an application has the Final Application privilege its command processing is subject to issuer policy. The OPEN itself, or a Security Domain with Card Terminate privilege, or an Application with Card Terminate privilege, may initiate the transition from any of the previous states to the state TERMINATED.

Card Architecture

GP APDU Command Reference
This section details the GlobalPlatform APDU commands that may be implemented. The commands are listed alphabetically. Summarizes the APDU commands that are supported by the Issuer Security Domains, and the requirements for support of these APDU commands by other Security Domains. When logical channels are supported, the MANAGE CHANNEL command is only processed by the OPEN and no Security Domain support is required for this command.

AM

SD

| DM

SD

| SD| AM

SD

| DM

SD

| SD| AM

SD

| DM

SD

| SD| FASD| SD| FASD| SD
DELETE

Executable Load File

|  |  |  |  |  |  |  |  |  |  |  |  |
DELETE

Executable Load

File and related Application(s)

|  |  |  |  |  |  |  |  |  |  |  |  |
DELETE

Application

|  |  |  |  |  |  |  |  |  |  |  |  |
DELETE Key|  |  |  |  |  |  |  |  |  |  |  |  |
GET DATA|  |  |  |  |  |  |  |  |  |  |  |  |
GET STATUS|  |  |  |  |  |  |  |  |  |  |  |  |
INSTALL [for

load]

|  |  |  |  |  |  |  |  |  |  |  |  |
INSTALL [for

install]

|  |  |  |  |  |  |  |  |  |  |  |  |
INSTALL [for

load, install and make selectable]

|  |  |  |  |  |  |  |  |  |  |  |  |
INSTALL [for

install and make selectable]

|  |  |  |  |  |  |  |  |  |  |  |  |
INSTALL [for

make selectable]

|  |  |  |  |  |  |  |  |  |  |  |  |
INSTALL [for

extradition]

|  |  |  |  |  |  |  |  |  |  |  |  |
INSTALL [for

registry update]

|  |  |  |  |  |  |  |  |  |  |  |  |
INSTALL [for

personalization]

|  |  |  |  |  |  |  |  |  |  |  |  |
LOAD|  |  |  |  |  |  |  |  |  |  |  |  |
PUT KEY|  |  |  |  |  |  |  |  |  |  |  |  |
SELECT|  |  |  |  |  |  |  |  |  |  |  |  |
SET STATUS|  |  |  |  |  |  |  |  |  |  |  |  |
STORE DATA|  |  |  |  |  |  |  |  |  |  |  |  |
AM SD| Security Domain with Authorized

Management privilege.

---|---
DM SD| Security Domain with Delegated

Management privilege.

FA SD| Security Domain with Final Application

privilege.

signature verification

GET DATA| None
GET STATUS| Secure Channel initiation
INSTALL| Secure Channel initiation or digital

signature verification

LOAD| Secure Channel initiation or digital

signature verification

MANAGE CHANNEL| Not applicable
PUT KEY| Secure Channel initiation
SELECT| Not applicable
SET STATUS| Secure Channel initiation
STORE DATA| Secure Channel initiation

General Coding Rules
Please refer to the ACOSJ Reference Manual.

DELETE Command
The DELETE command is used to delete a uniquely identifiable object such as an Executable Load File, an Application, and Executable Load File and its related Applications or a key. In order to delete and object, the object should be uniquely identifiable by the selected Application.

GET DATA Command
The GET DATA command is used to retrieve either a single data object, which may be constructed or a set of data objects. Reference control parameters P1 and P2 coding are used to define the specific data object tag. The data object may contain information pertaining to a key.

GET STATUS Command
The GET STATUS command is used to retrieve Issuer Security Domain, Executable Load File, Executable Module, Application or Security Domain Life Cycle status information according to a given match/search criteria.

INSTALL Command
The INSTALL command is issued to a Security Domain to initiate or perform the various steps required for Card Content management.

LOAD Command
This section defines the structure of the Load File transmitted in the LOAD command data field for loading a Load File. The ICC internal handling or storage of the Load File is beyond the scope of this Specification.
Multiple LOAD commands may be used to transfer a Load File to the card. The Load File is divided into smaller components for transmission. Each LOAD command shall be numbered starting at 00h. The LOAD command numbering shall be strictly sequential and increments by one. The card shall be informed of the last block of the Load File. After receiving the last block of the Load File, the card shall execute the internal processes necessary for the Load File and any additional processes identified in the INSTALL [for load] command that preceded the LOAD commands.

MANAGE CHANNEL Command
The MANAGE CHANNEL command is processed by the open on cards that are aware of logical channels. It is used to open and close Supplementary Logical Channels. The Basic Logical Channel (channel number zero) can never be closed.

PUT KEY Command
The PUT KEY command is used to either:

• Replace an existing key with a new key: The new key has the same or a different Key Version Number but the same Key Identifier as the key being replaced.
• Replace multiple existing keys with new keys: The new keys have the same or a different Key Version Number (identical for all new keys) but the same Key Identifiers as the keys being replaced.
• Add a single new key: The new key has a different combination Key Identifier/Key Version Number than that of the existing keys.
• Add multiple new keys: The new keys have different combinations of Keys Identifiers/Key Version Number (identical to all new keys) than that of the existing keys.

When the key management operation requires multiple PUT KEY commands, chaining of the multiple PUT KEY commands is recommended to ensure integrity of the operation.
In this version of the Specification the public values of asymmetric keys are presented
(transmitted) in clear text.

SELECT Command
The SELECT command is used for selecting an Application. The OPEN only processes SELECT commands indicating the SELECT [by name] shall be passed to the currently selected Security Domain or Application on the indicated logical channel.

SET STATUS Command
The SET STATUS command shall be used to modify the card Life Cycle State or the Application Life Cycle State.

STORE DATA Command
The STORE DATA command is used to transfer data to an Application or the Security Domain processing the command. The Security Domain determines if the command is intended for itself or an application depending on a previously receiver command. If a preceding command was and INSTALL [for personalize] command, the STORE DATA command is destined for an application. Multiple STORE DATA command are used to send data to the Application or Security Domain by breaking the data into smaller components for transmission. The Security Domain shall be informed of the last block. A personalization session starts when a Security Domain receives a valid INSTALL [for personalize] command designating an Application (implementing either the Application or the Personalization interface) to which the Security Domain shall be forward subsequently received STORE DATA commands.

A personalization session ends when:

• The card is reset.
• The Security Domain is deselected (i.e., another, or the same, applet is selected on the same logical channel)
• The Security Domain is selected on the same or another logical channel.
• The Secure Channel session (if any) established by the Security Domain is reset, possibly by the targeted application.
• The Security Domain receives and INSTALL [for personalize] command (starting a new personalization session for another application)
• The Security Domain receives a STORE DATA command indicating P1. b8=1 (last block)

GlobalPlatform API

Global Platform on a JAVA Card
This section contains only the API required for Global Platform 2.2x Java Cards. Use of the Open Platform 2.0.1 API is still allowed for supporting older versions of Applications but is deprecated. It is defined in version 2.1.1 of this Specification. The deprecated API and new API both access the same objects where applicable. While this may seem obvious for methods that have the same name across both classes (e.g. setATRHistBytes(), setCardContentState() and getCardContentSame()) it shall also be noted as for example that an application that uses the updated() method in the new API to change the value of the global PIN will affect the same global PIN of an application that uses the setPIN() method in the deprecated API to verify the global PIN.

GlobalPlatform Specific Requirements
In order to ensure the highest level of interoperability of GlobalPlatform implementations, GlobalPlatform also adopts the order defined in section 6.2 – Java CardTM 2.2x Virtual Machine Specification. The following minor modifications to the standard functionality defined in the Java CardTM 2.1.1 Runtime Environment (JCRE) Specifications and the Java CardTM 2.1.1 Application Programming Interface are present in the implementation of GlobalPlatform. Some of the modifications are already consistent with the Java CardTM 2.2.x Specification and therefore not modifications anymore.
GPRegistryEntry objects shall be implanted as Shareable Interface Objects as defined in section 6.2.4 “Shareable Interfaces” of the Java CardTM 2.2.x Runtime Environment (JCRE) Specification in order to ensure shared access.

GlobalPlatform package AID
Each GlobalPlatfrom package AID will be concatenation of RID and a PIX. The AID value of the Java Card Export File for the new GlobalPlatform API (identical for both GlobalPlatform 2.1 and 2.1.1) based on the RID specified in Appendix H – GlobalPlatform Data Values and Card Recognition Data is “A00000015100”.

Installation

In section 3.1 – The Method install of the Java CardTM 2.2.x Runtime Environment (JCRE) Specifications, the parameters passed to the method are defined to be initialization parameters from the contents of the incoming byte array parameter. This specification expands on this requirement and further defines the content of the Install Parameters. This expansion affects both the implementation of an OPEN and the behaviour of Java Card applet developed for a GlobalPlatform card. It does not affect the definition of the install () method of the Class Applet of the Java CardTM 2.2.x Application Programming Interface specification.

The Install Parameters shall identify the following data, present in the INSTALL [for install] command:

• The instance AID
• The Privileges
• The Application Specific Parameters. (While the APDU command contains Install Parameters representing TLV coded system and Application Specific Parameters, the application only required knowledge of the Application Specific Parameters, i. e. only LV of the TLV coded structure “C9” are present as application specific parameters.

The OPEN is responsible for ensuring that the parameters (bArray, bOffset and bLength) contain the following information: The array, bArray, shall contain the following consecutive LV coded data:

• Length of the instance AID
• The instance AID
• Length of the Privileges
• The Privileges
• Length of the Application Specific Parameters
• The Application Specific Parameters

The byte, bOffset, shall contain an offset within the array pointing to the length of the instance AID. The byte, bLength, shall contain a length indicating the total length of the above-defined data in the array. The applet is required to utilize the instance AID as a parameter when invoking the register (byte [] bArray, short bOffset, byte bLength) method of the Class Applet of the Java Card 2.2.x Application Programming Interface specification.

T=0 Transmission Protocol
GlobalPlatform cards are intended to be functional in the widest range of environments (i.e., Card Acceptance Devices). Currently the Java Card 2.1.1 Runtime Environment (JCRE) Specifications and Java Card 2.2.x Runtime Environment (JCRE) Specifications describe the behaviour for case 2 commands (when suing the T=0 protocol) in contradiction to EMV 2000. GlobalPlatform mandates that the JCRE shall handle this case of command in accordance with ISO/IEC 7816: An applet receiving a case 2 command build the response and invokes the appropriate API to output the data. If the data is less than the data expected by the terminal, the OPEN will, store the data and output a “6Cxx” response code and wait for the CAD to re-issue the command with the correct length. When the re-issued command is received the JCRE will manage the outputting the stored data.

Atomicity
Unless otherwise specified all internal persistent objects of the GlobalPlatform API must be conform to a transaction in progress. All operations performed by this API, expect the Application.processData() method shall be executed atomically. Objects used to enforce the implementation of velocity checking shall not conform to a transaction in progress.

Logical channels
The following logical channel restrictions apply to Java Card 2.2.x (see the Java Card 2.2.x Runtime Environment (JCRE) Specifications for more details): Selection of an Application on a logical channel as defined in section 6.3 – Command Dispatch will be unsuccessful if this same Application, or any other Application instantiated from code in the same package from which the Application being selected was instantiated, is currently selected on another logical channel but the application code does not implement the MultiSelectable interface. Security Domains shall implement the MultiSelectable interface. Changing context from a Security Domain to an Application as defined in section 7.3.3 Personalization Support will be unsuccessful if this same Application, or any other Application instantiated from code in the same package from which the Application being personalized was instantiated is currently selected on another logical channel, but the application code does not implement the MultiSelectable interface. An Application that has the privilege of being selected by default and is intended for a card that supports Supplementary Logical Channels should implement the MultiSelectable interface. GlobalPlarform only defines the assignment of logical channel numbers by the card. Optionally and as defined in Java Card 2.2, a card may also support assignment of logical channel numbers by the terminal.

Cryptographic Algorithms
GlobalPlatform cards supporting RSA cryptography should support key sizes not defined as constants in the Key Builder class. More specifically, support for key sizes being a multiple of 4 bytes (32 bits), and being within the allowed key lengths defined by the implementation should be available.

Level of trust
The Java Card 2.2.x specifications assume that the RID of the AID packages, applets and instances will be utilized to ensure a level of trust between these entities. In section 4.2.2-AID Usage of the Java Card 2.2.1 Application Programming Interface it is defined that the RID of an AID of a component must match the RID of the AID of the package, and in the definition of the register (byte [] bArray, short bOffset, byte bLength) method of the Java Card 2.2.x Application Programming Interface specification it is defined that  an exception must be thrown if the RID portion of the AID bytes in the bArray parameter does not match the RID portion of the Java Card name of the applet. From a real-world implementation point of view, mandating that the RID of the instance AID must be the same as the RID of the component from which it was instantiated is not practical. GlobalPlatform implementations shall not mandate that there be any ling through the AID of an instance to its original package. (Requiring no connections between the AID of an instance and the AID of its original package). It does however assume that all applications in the same package share the same level of trust.

Invocation of GlobalPlatform methods
The Application Programming Interface defined herein is accessible to any Java Card applet developed with the intention of being present on a GlobalPlatform card. One limitation does not exist relating to the constructor of the applet and to install () method of the Class Applet of the Java Card 2.2.x Application Programming Interface. As this specification does not define exactly when the instance of an applet becomes an entry in the card’s GlobalPlatform Registry, an applet developer can only assume that this has occurred following the successful completion of the install () method. To ensure interoperability, GlobalPlatform API methods that access to the GlobalPlatform Registry entry of the applet invoking the method, shall not be invoked from within the constructor or the install() method.

The following is a lost of methods that may be invoked from within the constructor or the install() method:

• getCardState;
• getCVM;
• getService;

The required behaviour of the card in the event that an application incorrectly invokes a method of the org.globalplatform.GPSystem class other than those listed above is undefined. For example, an exception may be thrown and the processing of the install() method may be aborted.

Selection
On GlobalPlatform cards, if an error occurs during the processing of the select() method or if the select() method returns False or if the Application cannot be selected because it does not implement the Multiselectable interface, the OPEN shall continue searching through the GlobalPlatform Registry for a subsequent full or partial match as defined in section 6.4.2.1.2. If no Application is selected, the corresponding logical channel remains open with no currently selected Application. Since no Application is currently selected, any subsequent command, other than a MANAGE CHANNEL or SELECT command, will be rejected. It is expected that the off-card entity will take appropriate action on such an error, e.g., select another Application, close the corresponding logical channel, reset or power off the card. The Method Summary and Details for the GlobalPlatform Java Card API specification is now available in a separate document, which may be found on the GlobalPlatform website.

Pre-personalization

When the IC is powered for the first time it is in the pre-personalization state. The INIT_CARD Command (see 8.2.2 INIT CARD Command) must be the first command at the pre-personalization state, the command initializes the card memory area with default values, and then a so-called ACOSJ ROOT Application (see 8.0 ACOSJ ROOT Application) is available to write critical system data (for example, “ATR”, “ATS” and so on) into the EEPROM. Once the data has been loaded and confirmed no further changes a command that disables the ACOSJ ROOT Application must be executed. When the IC exits the pre-personalization state with the successful execution of the Active Card command (see 8-2.5 ACTIVATE Command), it is in the default GlobalPlatform card life cycle OP_READY state if it is not set to a different life cycle state. If is not possible to return to the pre-personalization state once that active card command has been processed successfully.

ACOSJ ROOT Application

ACOSJ ROOT Application Description
The commands in the ROOT application can be used only after the ROOT application is correctly selected (using the select command the Transport Key). After entering into the ROOT Application, the user can read or configure card parameters though commands supported by the ROOT Application. To exit ROOT Application and select another application, the card must be reset. Under the ROOT Application, parameters of the card can be read or configured. The ROOT Application will become invalid once the card is activated.

ACOSJ ROOT Application Command Reference

• SELECT Command
  • The SELECT command is used to select the ROOT application.
• INIT_CARD Command
  • This command is used to reset the card. This command will initialize all the EEPROM.
• READ Command
  • This command is used to read from the configuration area. Configuration parameters of the card can be read though this command.
• WRITE Command
  • This command is used to write data to the configuration area. Configuration parameters of the card can be read though this command.
• ACTIVE Command
  • This command is used to activate the card. Once this command is implemented successfully, the ROOT Application will become invalid, and the configuration data of the card cannot be read or set directly anymore.
• ACOSJ IDENTIFY Application
  • ACOSJ IDENTIFY Application Description
  • After the IDENTIFY Application (AID: 6163732E636F732E61636F736A766572) is selected with SELECT Command, ACOSJ will return the version number of ACOSJ and indicates whether the car has been activated.
• ACOSJ IDENTIFY Application Command Reference
  • SELECT Command
  • The SELECT command is used for selecting the INDENTIFY Application.

Status Bytes

References

The documents below served as references for the ACOSJ Functional Specification:

• GlobalPlatform Card Specification Version 2.2.1
• GlobalPlatform Card API Version 1.6
• Java Card 3 API, Classic Edition Version 3.0.4
• Java Card 3 Platform Runtime Environment Specification, Classic Edition Version 3.0.4 September 2011
• Java Card 3 Platform Virtual Machine Specification, Classic Edition Version 3.0.4 September 2011
• GlobalPlatform Card Mapping Guidelines of Existing GP v2.1.1 Implementation on v2.2.1 Version 1.0.1

Warranty

Warranty Conditions

• A new product purchased in the Alza.cz sales network is guaranteed for 2 years. If you need repair or other services during the warranty period, contact the product seller directly, you must provide the original proof of purchase with the date of purchase.
• The following are considered to be a conflict with the warranty conditions, for which the claimed claim may not be recognized:
• Using the product for any purpose other than that for which the product is intended or failing to follow the instructions for maintenance, operation, and service of the product.
• Damage to the product by a natural disaster, the intervention of an unauthorized person or mechanically through the fault of the buyer (e.g., during transport, cleaning by inappropriate means, etc.).
• Natural wear and aging of consumables or components during use (such as batteries, etc.).
• Exposure to adverse external influences, such as sunlight and other radiation or electromagnetic fields, fluid intrusion, object intrusion, mains overvoltage, electrostatic discharge voltage (including lightning), faulty supply or input voltage and inappropriate polarity of this voltage, chemical processes such as used power supplies, etc.
• If anyone has made modifications, modifications, alterations to the design or adaptation to change or extend the functions of the product compared to the purchased design or use of non-original components.

References

• Alza.cz – rychlý a pohodlný nákup odkudkoliv | Alza.cz
• Alza.sk – rýchly a pohodlný nákup odkiaľkoľvek | alza.sk
• Alza | Alza.co.uk
• Alza.cz – rychlý a pohodlný nákup odkudkoliv | Alza.cz
• Alza.cz – rychlý a pohodlný nákup odkudkoliv | Alza.cz
• Alza.cz
• alza.de
• alza.hu
• alza.sk

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