ACS ACR1255U-J1 Reference guide

ACR1255U-J1
Brand
ACS
Model
ACR1255U-J1
Category
Smart card readers
Type
Reference guide
Subject to change without prior notice [email protected]k
www.acs.com.hk
Reference Manual V1.07
ACR1255U-J1
Secure Bluetooth
®
NFC Reader
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Revision History
Release Date Revision Description Version Number
2015-09-07 ● Initial Release 1.00
2016-02-02
● Updated Section 2.0 Features
● Updated Section 4.1.2 Battery Life
● Updated Section 4.5.1 Keys
● Updated Section 4.5.3 Status LED
● Updated Section 4.5.4 Buzzer
● Updated Section 5.3 Authentication
● Updated Section 6.7.2 Get Serial Number
● Updated Section 6.7.16 Sleep Mode Option
● Updated Section 6.6.18 Read Tx Power
Value
1.01
2016-06-06
● Updated Section 5.6.5 Notify Card Status
Command
● Updated Section 6.2.1 ATR Generation
● Updated Section 6.4.1 Load Authentication
Keys
● Updated Section 6.7.6 Set LED and Buzzer
Status Indicator Behavior
● Updated Section 6.7.7 Read LED and
Buzzer Status Indicator Behavior
● Updated Section 6.7.8 Set Automatic PICC
Polling
● Updated Section 6.7.10 Set PICC Operating
Parameter
● Updated Section 6.7.11 Read PICC
Operating Parameter
● Updated Section 6.7.12 Set Auto PPS
● Updated Section 6.7.13 Read Auto PPS
● Updated Section 6.7.16 Sleep Mode Option
● Updated Section 6.7.17 Change Tx Power
Command
● Updated Section 6.7.18 Read Tx Power
Value
● Added Section 6.7.19 Customer Master Key
Rewrite
1.02
2016-09-16 ● Updated Product Marketing Name 1.03
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Release Date Revision Description Version Number
2017-01-10
● Updated format of commands and
examples
● Added Example of a Mutual Authentication
Communication (section 5.7.1)
● Updated Table 5 value
● Deleted the PIN passcode description
● Updated Section 2.0 Features
● Updated Section 4.1.2 Battery Life
● Updated Section 5.6.5 Notify Card Status
Command
● Added Section 6.4 APDU Commands for
PCSC 2.0 Part 3
● Updated Section 6.7.4 LED Color
● Updated Section 6.7.17 Change Tx Power
Command
● Updated Section 6.7.18 Read Tx Power
Value
1.04
2017-10-02
● Updated Table 5: Service Handles and
UUID Information List
● Updated Section 5.3 Authentication
● Updated Section 5.7 Mutual Authentication
● Added Section 6.7 Accessing FeliCa Tags
1.05
2017-12-28 ● Updated Product Photo 1.06
2018-05-24
● Updated Section 5.2 Profile Selection
● Updated Section 5.6 Bluetooth
Communication Protocol
1.07
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Table of Contents
1.0. Introduction ............................................................................................................... 7
1.1. Symbols and Abbreviations ................................................................................................... 7
2.0. Features ..................................................................................................................... 8
3.0. System Block Diagram ............................................................................................. 9
4.0. Hardware Design ..................................................................................................... 12
4.1. Battery .................................................................................................................................. 12
4.1.1. Battery Charging ......................................................................................................... 12
4.1.2. Battery Life .................................................................................................................. 12
4.2. Bluetooth Interface ............................................................................................................... 12
4.3. USB Interface ...................................................................................................................... 12
4.3.1. Communication Parameters ....................................................................................... 12
4.3.2. Endpoints .................................................................................................................... 13
4.4. NFC Interface ...................................................................................................................... 14
4.4.1. Carrier Frequency ....................................................................................................... 14
4.4.2. Card Polling ................................................................................................................. 14
4.5. User Interface ...................................................................................................................... 14
4.5.1. Keys ............................................................................................................................ 14
4.5.2. Mode Selection Switch ................................................................................................ 15
4.5.3. Status LED .................................................................................................................. 15
4.5.4. Buzzer ......................................................................................................................... 16
5.0. Software Design ...................................................................................................... 17
5.1. Bluetooth Connection Flow .................................................................................................. 17
5.2. Profile Selection ................................................................................................................... 18
5.3. Authentication ...................................................................................................................... 19
5.4. Communication Profile ......................................................................................................... 20
5.5. Frame Format ...................................................................................................................... 20
5.5.1. Data Frame Format ..................................................................................................... 20
5.6. Bluetooth Communication Protocol ..................................................................................... 21
5.6.1. Card Power On ........................................................................................................... 21
5.6.2. Card Power Off ........................................................................................................... 22
5.6.3. Get Slot Status ............................................................................................................ 23
5.6.4. APDU Command ......................................................................................................... 24
5.6.5. Notify Card Status Command ..................................................................................... 26
5.6.6. Hardware Error Response .......................................................................................... 26
5.6.7. Escape Command ....................................................................................................... 27
5.7. Mutual Authentication and Encryption Protocol ................................................................... 28
5.7.1. Bluetooth Authentication Program Flow ..................................................................... 28
5.7.2. SPH_to_RDR_ReqAuth .............................................................................................. 29
5.7.3. RDR_to_SPH_AuthRsp1 ............................................................................................ 30
5.7.4. SPH_to_RDR_AuthRsp .............................................................................................. 31
5.7.5. RDR_to_SPH_AuthRsp2 ............................................................................................ 32
5.7.6. RDR_to_SPH_ACK (Error handling) .......................................................................... 32
6.0. Host Programming (PC-linked) API ....................................................................... 34
6.1. PC/SC API ........................................................................................................................... 34
6.1.1. SCardEstablishContext ............................................................................................... 34
6.1.2. SCardListReaders ....................................................................................................... 34
6.1.3. SCardConnect ............................................................................................................. 34
6.1.4. SCardControl .............................................................................................................. 34
6.1.5. SCardTransmit ............................................................................................................ 34
6.1.6. ScardDisconnect ......................................................................................................... 34
6.1.7. APDU Flow .................................................................................................................. 35
6.1.8. Escape Command Flow .............................................................................................. 36
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6.2. Contactless Smart Card Protocol ........................................................................................ 37
6.2.1. ATR Generation .......................................................................................................... 37
6.3. Pseudo APDU for Contactless Interface ............................................................................. 39
6.3.1. Get Data ...................................................................................................................... 39
6.4. APDU commands for PC/SC 2.0 Part 3 (version 2.02 or later) ........................................... 40
6.4.1. Command and Response APDU Format .................................................................... 40
6.4.2. Manage Session Command ........................................................................................ 41
6.4.3. Transparent Exchange Command .............................................................................. 45
6.4.4. Switch Protocol Command .......................................................................................... 48
6.4.5. PC/SC 2.0 Part 3 Example ......................................................................................... 49
6.5. PICC Commands for MIFARE Classic® (1K/4K) memory cards ........................................ 52
6.5.1. Load Authentication Keys ........................................................................................... 52
6.5.2. Authentication for MIFARE Classic (1K/4K) ............................................................... 53
6.5.3. Read Binary Blocks ..................................................................................................... 55
6.5.4. Update Binary Blocks .................................................................................................. 56
6.5.5. Value Block Operation (INC, DEC, STORE) .............................................................. 57
6.5.6. Read Value Block ........................................................................................................ 58
6.5.7. Copy Value Block ........................................................................................................ 59
6.6. Accessing PC/SC-compliant tags (ISO 14443-4) ................................................................ 60
6.7. Accessing FeliCa tags ......................................................................................................... 62
6.8. Peripherals Control .............................................................................................................. 62
6.8.1. Get Firmware Version ................................................................................................. 63
6.8.2. Get Serial Number ...................................................................................................... 64
6.8.3. LED Control ................................................................................................................. 64
6.8.4. LED Status .................................................................................................................. 65
6.8.5. Buzzer Control ............................................................................................................ 65
6.8.6. Set LED and Buzzer Status Indicator Behavior .......................................................... 66
6.8.7. Read LED and Buzzer Status Indicator Behavior ....................................................... 67
6.8.8. Set Automatic PICC Polling ........................................................................................ 67
6.8.9. Read Automatic PICC Polling ..................................................................................... 69
6.8.10. Set PICC Operating Parameter .................................................................................. 69
6.8.11. Read PICC Operating Parameter ............................................................................... 70
6.8.12. Set Auto PPS .............................................................................................................. 71
6.8.13. Read Auto PPS ........................................................................................................... 72
6.8.14. Antenna Field Control ................................................................................................. 72
6.8.15. Read Antenna Field Status ......................................................................................... 73
6.8.16. Sleep Mode Option ..................................................................................................... 73
6.8.17. Change Tx Power command ...................................................................................... 74
6.8.18. Read Tx Power Value ................................................................................................. 74
6.8.19. Customer Master Key Rewrite .................................................................................... 75
Appendix A. Access MIFARE DESFire tags (ISO 14443-3) ........................................... 77
List of Figures
Figure 1 : ACR1255U-J1 Architecture .................................................................................................... 9
Figure 2 : ACR1255U-J1 USB Communication Architecture ............................................................... 10
Figure 3 : Bluetooth
Protocol Stack ...................................................................................................... 11
Figure 4 : Keys on ACR1255U-J1 ........................................................................................................ 14
Figure 5 : LED Operation Status .......................................................................................................... 15
Figure 6 : Bluetooth Connection Flow .................................................................................................. 17
Figure 7 : Authentication Procedure ..................................................................................................... 19
Figure 8 : ACR1255U-J1 APDU Flow .................................................................................................. 35
Figure 9 : ACR1255U-J1 Escape Command Flow .............................................................................. 36
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List of Tables
Table 1 : Symbols and Abbreviations ..................................................................................................... 7
Table 2 : Estimated Battery Lifespan .................................................................................................... 12
Table 3 : USB Interface Wiring ............................................................................................................. 12
Table 4 : ACR1255U-J1’s Bluetooth Service ........................................................................................ 18
Table 5 : ACR1255U-J1 Service Handles and UUID Information List ................................................. 18
Table 6 : Command Code Summary .................................................................................................... 21
Table 7 : Response Code Summary .................................................................................................... 21
Table 8 : Summary of Mutual Authentication Commands .................................................................... 28
Table 9 : Mutual Authentication Error codes ........................................................................................ 33
Table 10 : MIFARE Classic® 1K Memory Map .................................................................................... 54
Table 11 : MIFARE Classic® 4K Memory Map .................................................................................... 54
Table 12 : MIFARE Ultralight® Memory Map ....................................................................................... 55
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1.0. Introduction
ACR1255U-J1 Secure Bluetooth® NFC Reader acts as an interface for the communication between a
computer/mobile device and a contactless smart card or NFC-enabled device. It establishes a uniform
interface from the computer/mobile device to the smart card for a wide variety of cards. By taking care
of the card’s particulars, it releases the computer software programmer from being responsible with
smart card operations’ technical details, which in many cases, are not relevant to the implementation
of a smart card system.
1.1. Symbols and Abbreviations
Abbreviation Description
ATR Attribute Request and Attribute Response
DEP Data Exchange Protocol Request and Data Exchange Protocol Response
DSL Deselect Request and Deselect Response
PSL Parameter Selection Request and Parameter Selection Response
RLS Release Request and Release Response
WUP Wakeup Request and Wakeup Response
DID Device ID
BS Sending bit duration
BR Receiving bit duration
PP Protocol Parameters
Table 1: Symbols and Abbreviations
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2.0. Features
• USB Full Speed Interface
• Bluetooth® Interface
• Plug and Play – CCID support brings utmost mobility
• Smart Card Reader:
o Contactless Interface:
Read/Write speed of up to 424 Kbps
Built-in antenna for contactless tag access, with reading distance of up to 60 mm
(depending on tag type)
Supports ISO 14443 Part 4 Type A and B cards, MIFARE, FeliCa, and all 4 types of
NFC (ISO/IEC 18092) tags
Built-in anti-collision feature (only one tag is accessed at any time)
Supports AES-128 encryption algorithm (CBC ciphering mode)
NFC Mode Supported:
▫ Card reader/writer mode
• Application Programming Interface:
o Supports PC/SC
o Supports CT-API (through wrapper on top of PC/SC)
• Built-in Peripherals:
o Two user-controllable bi-color LEDs
o User-controllable buzzer
• USB Firmware Upgradeability
1
• Supports Android™ 4.3 and later
2
• Supports iOS 5.0 and later
3
• Compliant with the following standards:
o EN 60950/IEC 60950
o ISO 14443
o ISO 18092
o USB Full Speed
o Bluetooth
o PC/SC
o CCID
o CE
o FCC
o RoHS 2
o REACH
o VCCI (Japan)
o TELEC (Japan)
o Microsoft® WHQL
1
Applicable under PC-linked mode
2
Uses an ACS-defined Android Library
3
Uses an ACS-defined iOS Library
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3.0. System Block Diagram
Figure 1: ACR1255U-J1 Architecture
ACR1255U-J1
NFC
Antenna
MCU
Bluetooth
Mobile
device or
Computer
LEDs
Buzzer
Bluetooth
Module
Switch
Rechargeable Battery
USB
Computer
NFC
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For USB communication architecture, the protocol between ACR1255U-J1 and other devices follow
the CCID protocol. All communications for NFC are PC/SC-compliant.
Figure 2: ACR1255U-J1 USB Communication Architecture
ACR1255U-J1 PC/SC
NFC Interface
USB Interface
(CCID)
PC/SC Layer
T=CL and T=1
Emulation
NFC
(Built-in Antenna)
Physical
Interface
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Bluetooth protocol stack architecture is as follows:
GAP Peripheral
Role Profile
SIM Access
Profile
GAP Peripheral
Bond Manager
GAP GATT
SMP
ATT
L2CAP
HCI
Link Layer
Physical Layer
Figure 3: Bluetooth
Protocol Stack
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4.0. Hardware Design
4.1. Battery
ACR1255U-J1 uses a rechargeable Lithium-ion battery, which has a capacity of 320 mAh.
4.1.1. Battery Charging
Once the battery of ACR1255U-J1 runs out, it may be charged in any of the following modes: OFF,
USB, Bluetooth; as long as it is connected to a power outlet.
4.1.2. Battery Life
The battery life is dependent on the usage of the device. Below is an estimate of the battery life
depending on the various work conditions:
Mode Estimated Battery Life
Working Mode 14 days*
(1)
Standby Mode 22 days
(2)
OFF Mode 2 years
Table 2: Estimated Battery Lifespan
Note: Results may vary as it depends on the smart card used.
(1)
In Bluetooth mode, run 10 operations per day with 1 minute operation run.
(2)
In Bluetooth mode, set sleep time as 60 seconds and wake up once per day.
4.2. Bluetooth Interface
ACR1255U-J1 uses Bluetooth as the medium to pair the device with computers and mobile devices.
4.3. USB Interface
The mini-USB port is used to connect the ACR1255U-J1 to the computer as battery charging port.
This port is also used for the ACR1255U-J1 to operate in PC-linked mode.
4.3.1. Communication Parameters
ACR1255U-J1 is connected to a computer through USB as specified in the USB Specification 2.0.
The ACR1255U-J1 is working in full speed mode, i.e. 12 Mbps.
Pin Signal Function
1 V
BUS
+5 V power supply for the reader
2 D- Differential signal transmits data between ACR1255U-J1 and computer
3 D+ Differential signal transmits data between ACR1255U-J1 and computer
4 GND Reference voltage level for power supply
Table 3: USB Interface Wiring
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4.3.2. Endpoints
ACR1255U-J1 uses the following endpoints to communicate with the host computer:
Control Endpoint
For setup and control purpose
Bulk OUT
For command to be sent from host to ACR1255U-J1
(data packet size is 64 bytes)
Bulk IN
For response to be sent from ACR1255U-J1 to host
(data packet size is 64 bytes)
Interrupt IN
For card status message to be sent from ACR1255U-J1 to host
(data packet size is 8 bytes)
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4.4. NFC Interface
The interface between ACR1255U-J1 and contactless card follows the ISO 14443 or ISO 18092
specifications with certain restrictions or enhancements aimed to increase the practical functionality of
the reader.
4.4.1. Carrier Frequency
The carrier frequency of ACR1255U-J1 is 13.56 MHz
4.4.2. Card Polling
ACR1255U-J1 automatically polls the contactless cards that are within the field. ISO 14443-4 Type A,
ISO 14443 Type B, FeliCa, Topaz, MIFARE, and NFC tags are supported.
4.5. User Interface
4.5.1. Keys
ACR1255U-J1 has 3 keys with locations shown in the figure below:
Key Description
ANT_KEY Wake up from sleep mode
MODEL_KEY Mode selection
UPDATE_KEY Enable boot loader
Figure 4: Keys on ACR1255U-J1
ANT_KEY
MODEL_KEY
UPDATE_KEY
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4.5.2. Mode Selection Switch
ACR1255U-J1 has three modes: USB, Off, and Bluetooth. User can select one mode at a time as a
data transmission interface.
Symbol Switch Active Mode
USB PC-linked
Off No power
Bluetooth Bluetooth
4.5.3. Status LED
ACR1255U-J1 has two bi-color LEDs to show the various operation statuses, where:
Figure 5: LED Operation Status
Mode Color LED Activity Status
Bluetooth
Mode
Blue
(LED1)
Off
• Reader is powered off
• No Bluetooth device paired
• Reader is in USB mode
Slow flash v1
4
The paired Bluetooth device is authenticated successfully and
is waiting for instructions
Slow flash v2
5
Bluetooth device is paired, card polling is on and no card is
present
Fast flash Data is being transferred between the reader and paired device
Fast – Slow flash
• Powered on
• Searching for devices to be paired with
On
• Bluetooth device is paired with the reader
• Card is present
4
LED is on for 500 ms, off for 500 ms
5
LED is on for 200 ms, off for 1800 ms
LED1
LED2
• Blue - Bluetooth Status
• Red - Battery Status
• Green – USB
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Mode Color LED Activity Status
Red
(LED2)
Off
• Battery is fully charged
• Reader is powered off
• The voltage of the battery is greater than 3.5 V and no
USB powered is being supplied
Slow flash Low battery
On Battery is charging
USB Mode
Green
(LED2)
Off Reader is powered off
Slow flash No card presented and the reader is waiting for instruction
Fast flash There is read/write access between the smart card and reader
On Card is present and the reader is waiting for instruction
Orange
6
(LED2)
On Device is powered on
Red
(LED1)
Off
• Battery is fully charged
• Reader is powered off
• The voltage of the battery is greater than3.5V and no USB
powered is being supplied
Slow flash Low battery
On Battery is charging
4.5.4. Buzzer
ACR1255U-J1 has a buzzer that is used to notify user of card polling, Bluetooth connection, sleep
mode, and low-battery status.
Buzzer Activity Event
One short beep Card has been detected or removed
One long beep Reader has been powered on
6
Green and Red both turned on
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5.0. Software Design
5.1. Bluetooth Connection Flow
The program flow of the Bluetooth connection is shown below:
Figure 6: Bluetooth Connection Flow
Yes
No
Bluetooth Start
(Reset/Power up)
Successful Connection?
No
Enable Service
Disconnect?
Reset
Power Off
Authentication
Smart Card Operation with Security Channel
Successful Authentication?
Yes
Yes
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5.2. Profile Selection
ACR1255U-J1 is a smart card reader that is designed to use Bluetooth technology as an interface to
transmit data. A customized service called Commands Communication with three pipes is used: the
first pipe is used for command request, the second pipe is for command response/card notification,
and the third pipe is for RFU.
Also, the reader’s current power consumption is significantly greater when the reader is operating in
Bluetooth mode, hence, a standard battery service is used to notify the paired device about the
current battery status. When there is a change in the battery status, the reader will notify the paired
device through a specific pipe. To simplify, the battery levels are divided into three groups: sufficient
battery (≥ 3.78 V), low battery (< 3.78 V and ≥ 3.68 V), and no battery (< 3.68 V).
Finally, to provide more reader information to the user, a customized Device Information service is
added. This can only be read manually, or by an application request. The characteristics include
Model Number, Serial Number, Firmware Revision, and Manufacturer Name.
Service UUID Pipe
Smart Card
3C4AFFF1-4783-3DE5-
A983-D348718EF133
Commands Request
3C4AFFF2-4783-3DE5-
A983-D348718EF133
Commands Response/Card
Notification
3C4AFFF3-4783-3DE5-
A983-D348718EF133
RFU
Battery 2A19 Battery Level
Device Information
2A23 System ID
2A24 Model Number
2A25 Serial Number
2A26 Firmware Revision
2A27 Hardware Revision
2A29 Manufacturer Name
Table 4: ACR1255U-J1’s Bluetooth Service
Attribute Name UUID Handle
DeviceName 2A00 03h
Send(Reader → Paired device)
3C4AFFF1-4783-
3DE5-A983-
D348718EF133
2Ah
Receive(Paired device → Reader)
3C4AFFF2-4783-
3DE5-A983-
D348718EF133
2Dh
BatteryLevel 2A19 14h
Manufacturer 2A29 1Eh
SerialNumber 2A25 16h
FW_Version 2A26 18h
ModelNumber 2A24 14h
Table 5: ACR1255U-J1 Service Handles and UUID Information List
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5.3. Authentication
Before any sensitive data can be loaded into ACR1255U-J1, the data processing server must be
authenticated by ACR1255U-J1 for the privilege to modify the secured data inside reader. In
ACR1255U-J1, a mutual authentication method is being used.
For better illustration, please refer to figure below (the picture below has omitted the bridging device
for simplicity and better illustration):
Figure 7: Authentication Procedure
Note: For more detailed information, you may contact an ACS sales representative
1.
Send authentication
request message
2.
Answer to the request
message
3.
Send authentication
response message
4.
Answer to the
authentication response
message
Transmitted
through the
bridging device
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5.4. Communication Profile
The communication profile should be:
Start byte + Len + Datablock + Check + Stop byte
Field Size (bytes) Description
Start byte
1 Value: 05h
Len
2 Len means the number of bytes in the Datablock field
Datablock
N
Data (the frame format is described in Frame Format
and
Encrypted)
Check
1 Check means the XOR values of bytes in Len and Datablock fields
Stop byte
1 Value: 0Ah
5.5. Frame Format
5.5.1. Data Frame Format
Command
HID Frame Length (bytes) Description
CmdMessageType
1 Commands
Length
2 Data length (Big Endian)
Slot
1 Default value: 00h
Seq
1 Sequence
Param
1 Parameter
Checksum
1 Checksum
Data
0-N Data
The frame format should be:
CmdMessageType + Length + Slot + Seq + Param + Checksum + Data
If the total command length, including identifier, length and payload, is greater than 20 bytes, then the
reader or the paired device will automatically divide it into several frames.
Response
HID Frame Length (bytes) Description
RspMessageType
1 Response
Length
2 Data length (Big Endian)
Slot
1 Default value: 00h
Seq
1 Sequence
Slot Status/Param
1 Slot Status/Parameter
Checksum
1 Checksum
Data
0-N Data
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ACS ACR1255U-J1 Reference guide

ACR1255U-J1
Brand
ACS
Model
ACR1255U-J1
Category
Smart card readers
Type
Reference guide
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