Extensions for Financial Services (XFS) interface specification Release 3.50 - Part 6: PIN Keypad Device Class Interface - Programmer’s Reference

This section describes the application program interface for personal identification number keypads (PIN pads) and other encryption/decryption devices. This description includes definitions of the service-specific commands that can be issued, using the WFSAsyncExecute, WFSExecute, WFSGetInfo and WFSAsyncGetInfo functions.
This section describes the general interface for the following functions:
•   Administration of encryption devices
•   Loading of encryption keys
•   Encryption / decryption
•   Entering Personal Identification Numbers (PINs)
•   PIN verification
•   PIN block generation (encrypted PIN)
•   Clear text data handling
•   Function key handling
•   PIN presentation to chipcard
•   Read and write safety critical Terminal Data from/to HSM
•   HSM and Chipcard Authentication
•   EMV 4.0 PIN blocks, EMV 4.0 public key loading, static and dynamic data verification
If the PIN pad device has local display capability, display handling should be handled using the Text Terminal Unit (TTU) interface.
The adoption of this specification does not imply the adoption of a specific security standard.
Important Notes:
•   This revision of this specification does not define all key management procedures; some key management is still vendor-specific.
•   Key space management is customer-specific, and is therefore handled by vendor-specific mechanisms.
•   Only numeric PIN pads are handled in this specification.
This specification also supports the Hardware Security Module (HSM), which is necessary for the German ZKA Electronic Purse transactions. Furthermore, the HSM stores terminal specific data.
This data will be compared against the message data fields (Sent and Received ISO8583 messages) prior to HSM-MAC generation/verification. HSM-MACs are generated/verified only if the message fields match the data stored.
Keys used for cryptographic HSM functions are stored separate from other keys. This must be considered when importing keys.
This version of PIN pad complies to the current ZKA specification 3.0. It supports loading and unloading against card account for both card types (Type 0 and Type 1) of the ZKA electronic purse. It also covers the necessary functionality for ‘Loading against other legal tender’.
Key values are passed to the API as binary hexadecimal values. When hex values are passed to the API within strings, the hex digits 0xA to 0xF can be represented by characters in the ranges ‘a’ to ‘f’ or ‘A’ to ‘F’.
The following commands and events were initially added to support the German ZKA standard, but may also be used for other national standards:
•   WFS_INF_PIN_HSM_TDATA
•   WFS_CMD_PIN_HSM_SET_TDATA
•   WFS_CMD_PIN_SECURE_MSG_SEND
•   WFS_CMD_PIN_SECURE_MSG_RECEIVE
•   WFS_CMD_PIN_GET_JOURNAL
•   WFS_SRVE_PIN_OPT_REQUIRED
•   WFS_CMD_PIN_HSM_INIT
•   WFS_SRVE_PIN_HSM_TDATA_CHANGED

Specifikacija vmesnika razširitev za finančne storitve (XFS), izdaja 3.50 - 6. del: Vmesnik razreda naprave s tipkovnico PIN - Referenca za programerje

V tem razdelku je opisan vmesnik za programiranje aplikacij za tipkovnice za vnos osebne identifikacijske številke (tipkovnice PIN) in druge naprave za šifriranje/dešifriranje. V tem opisu so vključene definicije ukazov, značilnih za določeno storitev, ki jih je mogoče izdati s funkcijami WFSAsyncExecute, WFSExecute, WFSGetInfo in WFSAsyncGetInfo.
V tem razdelku je opisan splošni vmesnik za naslednje funkcije:
•   skrbništvo nad napravami za šifriranje;
•   nalaganje šifrirnih ključev;
•   šifriranje/dešifriranje;
•   vnašanje osebne identifikacijske številke (PIN);
•   preverjanje številke PIN;
•   generiranje blokade številke PIN (šifrirana številka PIN);
•   obdelava podatkov z jasnim besedilom;
•   obdelava funkcijskih ključev;
•   predstavitev številke PIN kartici s čipom;
•   branje in zapisovanje podatkov o terminalu, ključnih za varnost, v varnostni modul za strojno opremo (HSM) in iz njega;
•   preverjanje pristnosti varnostnih modulov za strojno opremo in kartic s čipom;
•   blokade številke PIN v skladu z EMV 4.0, nalaganje javnih ključev v skladu z EMV 4.0, statično in dinamično preverjanje podatkov.
Če naprava s tipkovnico PIN omogoča lokalni prikaz, naj se to upravlja z vmesnikom tekstovne terminalne enote (TTU).
Sprejetje te specifikacije ne pomeni sprejetja določenega varnostnega standarda.
Pomembne opombe:
•   Ta različica specifikacije ne določa vseh postopkov upravljanja ključev, saj je upravljanje ključev še vedno nekoliko vezano na dobavitelja.
•   Upravljanje prostora za ključe je vezano na stranko, zato se obravnava z mehanizmi določenega dobavitelja.
•   Ta specifikacija obravnava le številske tipkovnice PIN.
Ta specifikacija podpira tudi varnostni modul za strojno opremo, ki je potreben za transakcije prek nemške elektronske denarnice ZKA. V varnostnem modulu za strojno opremo so shranjeni tudi podatki o terminalu.
Ti podatki se pred generiranjem/preverjanjem kode HSM-MAC primerjajo s podatkovnimi polji za sporočila (poslana in prejeta sporočila v skladu s standardom ISO 8583). Kode HSM-MAC so generirane/preverjene le, če se podatkovna polja ujemajo s shranjenimi podatki.
Ključi, ki se uporabljajo za kriptografske funkcije varnostnega modula za strojno opremo, so shranjeni ločeno od drugih ključev. To je treba upoštevati pri uvozu ključev.
Ta različica tipkovnice PIN je skladna s trenutno specifikacijo ZKA 3.0. Podpira polnjenje in praznjenje kartičnega računa za obe vrsti kartic (tip 0 in tip 1) elektronske denarnice ZKA. Zajema tudi potrebne funkcije za »polnjenje drugih zakonitih plačilnih sredstev«.
Vrednosti ključev so posredovane vmesniku za programiranje aplikacij kot binarne šestnajstiške vrednosti. Če so šestnajstiške vrednosti posredovane vmesniku za programiranje aplikacij znotraj nizov, je mogoče šestnajstiške številke od 0xA do 0xF predstaviti z znaki v obsegu od »a« do »f« ali od »A« do »F«.
Naslednji ukazi in dogodki so bili prvotno dodani za podporo nemškega standarda ZKA, vendar se lahko uporabljajo tudi za druge nacionalne standarde:
•   WFS_INF_PIN_HSM_TDATA
•   WFS_CMD_PIN_HSM_SET_TDATA
•   WFS_CMD_PIN_SECURE_MSG_SEND
•   WFS_CMD_PIN_SECURE_MSG_RECEIVE
•   WFS_CMD_PIN_GET_JOURNAL
•   WFS_SRVE_PIN_OPT_REQUIRED
•   WFS_CMD_PIN_HSM_INIT
•   WFS_SRVE_PIN_HSM_TDATA_CHANGED

General Information

Status
Published
Publication Date
22-Jan-2023
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
04-Jan-2023
Due Date
11-Mar-2023
Completion Date
23-Jan-2023

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SLOVENSKI STANDARD
SIST CWA 16926-6:2023
01-marec-2023
Specifikacija vmesnika razširitev za finančne storitve (XFS), izdaja 3.50 - 6. del:
Vmesnik razreda naprave s tipkovnico PIN - Referenca za programerje
Extensions for Financial Services (XFS) interface specification Release 3.50 - Part 6:
PIN Keypad Device Class Interface - Programmer’s Reference
Ta slovenski standard je istoveten z: CWA 16926-6:2022
ICS:
35.200 Vmesniška in povezovalna Interface and interconnection
oprema equipment
35.240.15 Identifikacijske kartice. Čipne Identification cards. Chip
kartice. Biometrija cards. Biometrics
35.240.40 Uporabniške rešitve IT v IT applications in banking
bančništvu
SIST CWA 16926-6:2023 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST CWA 16926-6:2023

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SIST CWA 16926-6:2023


CEN
CWA 16926-6

WORKSHOP
December 2022

AGREEMENT


ICS 35.200; 35.240.15; 35.240.40
English version


Extensions for Financial Services (XFS) interface
specification Release 3.50 - Part 6: PIN Keypad Device
Class Interface - Programmer's Reference
This CEN Workshop Agreement has been drafted and approved by a Workshop of representatives of interested parties, the
constitution of which is indicated in the foreword of this Workshop Agreement.

The formal process followed by the Workshop in the development of this Workshop Agreement has been endorsed by the
National Members of CEN but neither the National Members of CEN nor the CEN-CENELEC Management Centre can be held
accountable for the technical content of this CEN Workshop Agreement or possible conflicts with standards or legislation.

This CEN Workshop Agreement can in no way be held as being an official standard developed by CEN and its Members.

This CEN Workshop Agreement is publicly available as a reference document from the CEN Members National Standard Bodies.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of North
Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and United Kingdom.



EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members.


Ref. No.:CWA 16926-6:2022 E

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SIST CWA 16926-6:2023
CWA 16926-6:2022 (E)
Table of Contents
European Foreword . 6
1. Introduction . 10
1.1 Background to Release 3.50 . 10
1.2 XFS Service-Specific Programming . 10
2. PIN Keypad . 12
2.1 Encrypting Touch Screen (ETS) . 14
3. References . 17
4. Info Commands . 19
4.1 WFS_INF_PIN_STATUS . 19
4.2 WFS_INF_PIN_CAPABILITIES . 23
4.3 WFS_INF_PIN_KEY_DETAIL . 44
4.4 WFS_INF_PIN_FUNCKEY_DETAIL . 46
4.5 WFS_INF_PIN_HSM_TDATA . 49
4.6 WFS_INF_PIN_KEY_DETAIL_EX . 50
4.7 WFS_INF_PIN_SECUREKEY_DETAIL . 53
4.8 WFS_INF_PIN_QUERY_LOGICAL_HSM_DETAIL . 57
4.9 WFS_INF_PIN_QUERY_PCIPTS_DEVICE_ID . 58
4.10 WFS_INF_PIN_GET_LAYOUT . 59
4.11 WFS_INF_PIN_KEY_DETAIL_340 . 63
5. Execute Commands . 65
5.1 Normal PIN Commands . 65
5.1.1 WFS_CMD_PIN_CRYPT . 65
5.1.2 WFS_CMD_PIN_IMPORT_KEY . 68
5.1.3 WFS_CMD_PIN_DERIVE_KEY . 71
5.1.4 WFS_CMD_PIN_GET_PIN . 73
5.1.5 WFS_CMD_PIN_LOCAL_DES . 76
5.1.6 WFS_CMD_PIN_CREATE_OFFSET . 78
5.1.7 WFS_CMD_PIN_LOCAL_EUROCHEQUE . 80
5.1.8 WFS_CMD_PIN_LOCAL_VISA . 82
5.1.9 WFS_CMD_PIN_PRESENT_IDC . 84
5.1.10 WFS_CMD_PIN_GET_PINBLOCK . 86
5.1.11 WFS_CMD_PIN_GET_DATA . 88
5.1.12 WFS_CMD_PIN_INITIALIZATION . 91
5.1.13 WFS_CMD_PIN_LOCAL_BANKSYS . 93
5.1.14 WFS_CMD_PIN_BANKSYS_IO . 94
5.1.15 WFS_CMD_PIN_RESET . 95
5.1.16 WFS_CMD_PIN_HSM_SET_TDATA . 96
5.1.17 WFS_CMD_PIN_SECURE_MSG_SEND . 98
5.1.18 WFS_CMD_PIN_SECURE_MSG_RECEIVE . 100
5.1.19 WFS_CMD_PIN_GET_JOURNAL . 102
5.1.20 WFS_CMD_PIN_IMPORT_KEY_EX . 103
5.1.21 WFS_CMD_PIN_ENC_IO . 106
5.1.22 WFS_CMD_PIN_HSM_INIT. 108
5.1.23 WFS_CMD_PIN_SECUREKEY_ENTRY . 109

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5.1.24 WFS_CMD_PIN_GENERATE_KCV . 112
5.1.25 WFS_CMD_PIN_SET_GUIDANCE_LIGHT . 113
5.1.26 WFS_CMD_PIN_MAINTAIN_PIN . 115
5.1.27 WFS_CMD_PIN_KEYPRESS_BEEP . 116
5.1.28 WFS_CMD_PIN_SET_PINBLOCK_DATA . 117
5.1.29 WFS_CMD_PIN_SET_LOGICAL_HSM . 118
5.1.30 WFS_CMD_PIN_IMPORT_KEYBLOCK . 119
5.1.31 WFS_CMD_PIN_POWER_SAVE_CONTROL . 120
5.1.32 WFS_CMD_PIN_DEFINE_LAYOUT . 121
5.1.33 WFS_CMD_PIN_START_AUTHENTICATE . 122
5.1.34 WFS_CMD_PIN_AUTHENTICATE . 124
5.1.35 WFS_CMD_PIN_GET_PINBLOCK_EX . 127
5.1.36 WFS_CMD_PIN_SYNCHRONIZE_COMMAND . 129
5.1.37 WFS_CMD_PIN_CRYPT_340 . 130
5.1.38 WFS_CMD_PIN_GET_PINBLOCK_340. 134
5.1.39 WFS_CMD_PIN_IMPORT_KEY_340 . 136
5.2 Common commands for Remote Key Loading Schemes . 139
5.2.1 WFS_CMD_PIN_START_KEY_EXCHANGE. 139
5.3 Remote Key Loading Using Signatures . 140
5.3.1 WFS_CMD_PIN_IMPORT_RSA_PUBLIC_KEY . 140
5.3.2 WFS_CMD_PIN_EXPORT_RSA_ISSUER_SIGNED_ITEM . 143
5.3.3 WFS_CMD_PIN_IMPORT_RSA_SIGNED_DES_KEY . 145
5.3.4 WFS_CMD_PIN_GENERATE_RSA_KEY_PAIR . 148
5.3.5 WFS_CMD_PIN_EXPORT_RSA_EPP_SIGNED_ITEM . 150
5.4 Remote Key Loading with Certificates . 152
5.4.1 WFS_CMD_PIN_LOAD_CERTIFICATE . 152
5.4.2 WFS_CMD_PIN_GET_CERTIFICATE . 153
5.4.3 WFS_CMD_PIN_REPLACE_CERTIFICATE . 154
5.4.4 WFS_CMD_PIN_IMPORT_RSA_ENCIPHERED_PKCS7_KEY . 155
5.4.5 WFS_CMD_PIN_LOAD_CERTIFICATE_EX . 157
5.4.6 WFS_CMD_PIN_IMPORT_RSA_ENCIPHERED_PKCS7_KEY_EX . 159
5.5 EMV . 162
5.5.1 WFS_CMD_PIN_EMV_IMPORT_PUBLIC_KEY . 162
5.5.2 WFS_CMD_PIN_DIGEST . 165
5.6 Entering and Changing a Password . 166
5.6.1 WFS_CMD_PIN_PASSWORD_ENTRY . 166
6. Events . 170
6.1 WFS_EXEE_PIN_KEY . 170
6.2 WFS_SRVE_PIN_INITIALIZED . 171
6.3 WFS_SRVE_PIN_ILLEGAL_KEY_ACCESS . 172
6.4 WFS_SRVE_PIN_OPT_REQUIRED . 173
6.5 WFS_SRVE_PIN_CERTIFICATE_CHANGE . 174
6.6 WFS_SRVE_PIN_HSM_TDATA_CHANGED . 175
6.7 WFS_SRVE_PIN_HSM_CHANGED . 176
6.8 WFS_EXEE_PIN_ENTERDATA . 177
6.9 WFS_SRVE_PIN_DEVICEPOSITION . 178
6.10 WFS_SRVE_PIN_POWER_SAVE_CHANGE . 179
6.11 WFS_EXEE_PIN_LAYOUT . 180
6.12 WFS_EXEE_PIN_DUKPT_KSN . 181
6.13 WFS_SRVE_PIN_PASSWORD_CLEARED . 182

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SIST CWA 16926-6:2023
CWA 16926-6:2022 (E)
7. C - Header File . 183
8. Appendix-A . 206
8.1 Remote Key Loading Using Signatures . 207
8.1.1 RSA Data Authentication and Digital Signatures . 207
8.1.2 RSA Secure Key Exchange using Digital Signatures . 208
8.1.3 Initialization Phase – Signature Issuer and ATM PIN . 210
8.1.4 Initialization Phase – Signature Issuer and Host . 211
8.1.5 Key Exchange – Host and ATM PIN . 212
8.1.6 Key Exchange (with random number) – Host and ATM PIN . 213
8.1.7 Enhanced RKL, Key Exchange (with random number) – Host and ATM PIN . 214
8.1.8 Default Keys and Security Item loaded during manufacture . 215
8.2 Remote Key Loading Using Certificates . 216
8.2.1 Certificate Exchange and Authentication . 216
8.2.2 Remote Key Exchange . 217
8.2.3 Replace Certificate . 218
8.2.4 Primary and Secondary Certificates . 219
8.2.5 TR34 BIND To Host . 220
8.2.6 TR34 Key Transport. 221
8.2.7 TR34 REBIND To New Host . 223
8.2.8 TR34 Force REBIND To New Host . 224
8.2.9 TR34 UNBIND From Host . 225
8.2.10 TR34 Force UNBIND From Host . 226
8.3 German ZKA GeldKarte (Deutsche Kreditwirtschaft). 227
8.3.1 How to use the SECURE_MSG commands . 227
8.3.2 Protocol WFS_PIN_PROTISOAS . 228
8.3.3 Protocol WFS_PIN_PROTISOLZ . 229
8.3.4 Protocol WFS_PIN_PROTISOPS . 230
8.3.5 Protocol WFS_PIN_PROTCHIPZKA . 231
8.3.6 Protocol WFS_PIN_PROTRAWDATA . 232
8.3.7 Protocol WFS_PIN_PROTPBM . 233
8.3.8 Protocol WFS_PIN_PROTHSMLDI . 234
8.3.9 Protocol WFS_PIN_PROTGENAS . 235
8.3.10 Protocol WFS_PIN_PROTCHIPINCHG . 239
8.3.11 Protocol WFS_PIN_PROTPINCMP . 240
8.3.12 Protocol WFS_PIN_PROTISOPINCHG . 242
8.3.13 Command Sequence . 243
8.4 EMV Support . 250
8.4.1 Keys loading. 250
8.4.2 PIN Block Management . 252
8.4.3 SHA-1 Digest . 253
8.5 French Cartes Bancaires . 254
8.5.1 Data Structure for WFS_CMD_PIN_ENC_IO . 254
8.5.2 Command Sequence . 256
8.6 Secure Key Entry . 258
8.6.1 Keyboard Layout . 258
8.6.2 Command Usage - WFS_CMD_PIN_SECUREKEY_DETAIL and
WFS_CMD_PIN_IMPORT_KEY . 262
8.6.3 Command Usage - WFS_INF_PIN_GET_LAYOUT and WFS_CMD_PIN_IMPORT_KEY_340 263
8.7 WFS_PIN_USERESTRICTEDKEYENCKEY key usage . 264
8.7.1 Command Usage . 264
8.8 WFS_CMD_PIN_IMPORT_KEY_340 command Input/Output Parameters . 267
8.8.1 Importing a 3DES 16-byte terminal master key using signature-based remote key loading (SRKL):
268
8.8.2 Importing a 16-byte DES key for PIN encryption with a key check value in the input . 270
8.8.3 Importing a 16-byte DES key for MACing (MAC Algorithm 3) . 272
8.8.4 Importing a 2048-bit Host RSA public key . 274

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SIST CWA 16926-6:2023
CWA 16926-6:2022 (E)
8.8.5 Importing a 24-byte DES symmetric data encryption key via X9.143 keyblock . 276
8.9 Entering passwords using the WFS_CMD_PIN_PASSWORD_ENTRY command. . 277
8.9.1 Entering passwords individually to allow secure key parts to be loaded . 277
8.9.2 Entering and changing a password . 277
9. Appendix-B (Country Specific WFS_CMD_PIN_ENC_IO protocols) . 279
9.1 Luxemburg Protocol . 279
9.1.1 WFS_CMD_ENC_IO_LUX_LOAD_APPKEY . 281
9.1.2 WFS_CMD_ENC_IO_LUX_GENERATE_MAC . 283
9.1.3 WFS_CMD_ENC_IO_LUX_CHECK_MAC . 284
9.1.4 WFS_CMD_ENC_IO_LUX_BUILD_PINBLOCK . 285
9.1.5 WFS_CMD_ENC_IO_LUX_DECRYPT_TDES . 286
9.1.6 WFS_CMD_ENC_IO_LUX_ENCRYPT_TDES . 287
9.1.7 Luxemburg-specific Header File . 288
9.2 China Protocol . 290
9.2.1 WFS_CMD_ENC_IO_CHN_DIGEST . 293
9.2.2 WFS_CMD_ENC_IO_CHN_SET_SM2_PARAM . 294
9.2.3 WFS_CMD_ENC_IO_CHN_IMPORT_SM2_PUBLIC_KEY . 295
9.2.4 WFS_CMD_ENC_IO_CHN_SIGN . 297
9.2.5 WFS_CMD_ENC_IO_CHN_VERIFY . 299
9.2.6 WFS_CMD_ENC_IO_CHN_EXPORT_SM2_ISSUER_SIGNED_ITEM . 300
9.2.7 WFS_CMD_ENC_IO_CHN_GENERATE_SM2_KEY_PAIR . 302
9.2.8 WFS_CMD_ENC_IO_CHN_EXPORT_SM2_EPP_SIGNED_ITEM . 303
9.2.9 WFS_CMD_ENC_IO_CHN_IMPORT_SM2_SIGNED_SM4_KEY . 305
9.2.10 China-specific Header File . 308
10. Appendix–C (Standardized lpszExtra fields) . 313
10.1 WFS_INF_PIN_STATUS . 313
10.2 WFS_INF_PIN_CAPABILITIES . 314
11. Appendix–D (X9.143 Key Use) . 317
12. Appendix-E (DUKPT) . 320
12.1 Default Key Name. 320
13. Appendix-F Diagram Source . 321

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SIST CWA 16926-6:2023
CWA 16926-6:2022 (E)
European Foreword
This CEN Workshop Agreement has been developed in accordance with the CEN-CENELEC Guide 29
“CEN/CENELEC Workshop Agreements – The way to rapid consensus” and with the relevant provisions of
CEN/CENELEC Internal Regulations – Part 2. It was approved by a Workshop of representatives of interested parties
on 2022-11-08, the constitution of which was supported by CEN following several public calls for participation, the
first of which was made on 1998-06-24. However, this CEN Workshop Agreement does not necessarily include all
relevant stakeholders.
The final text of this CEN Workshop Agreement was provided to CEN for publication on 2022-11-18.
The following organizations and individuals developed and approved this CEN Workshop Agreement:
• AURIGA SPA
• CIMA SPA
• DIEBOLD NIXDORF SYSTEMS GMBH
• FIS BANKING SOLUTIONS UK LTD (OTS)
• FUJITSU TECHNOLOGY SOLUTIONS
• GLORY LTD
• GRG BANKING EQUIPMENT HK CO LTD
• HITACHI CHANNEL SOLUTIONS CORP
• HYOSUNG TNS INC
• JIANGSU GUOGUANG ELECTRONIC INFORMATION TECHNOLOGY
• KAL
• KEBA HANDOVER AUTOMATION GMBH
• NCR FSG
• NEXUS SOFTWARE
• OBERTHUR CASH PROTECTION
• OKI ELECTRIC INDUSTRY SHENZHEN
• SALZBURGER BANKEN SOFTWARE
• SECURE INNOVATION
• SIGMA SPA
It is possible that some elements of this CEN/CWA may be subject to patent rights. The CEN-CENELEC policy on
patent rights is set out in CEN-CENELEC Guide 8 “Guidelines for Implementation of the Common IPR Policy on
Patents (and other statutory intellectual property rights based on inventions)”. CEN shall not be held responsible for
identifying any or all such patent rights.
The Workshop participants have made every effort to ensure the reliability and accuracy of the technical and non-
technical content of CWA 16926-6, but this does not guarantee, either explicitly or implicitly, its correctness. Users
of CWA 16926-6 should be aware that neither the Workshop participants, nor CEN can be held liable for damages

6

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SIST CWA 16926-6:2023
CWA 16926-6:2022 (E)
or losses of any kind whatsoever which may arise from its application. Users of CWA 16926-6 do so on their own
responsibility and at their own risk.
The CWA is published as a multi-part document, consisting of:
Part 1: Application Programming Interface (API) – Service Provider Interface (SPI) – Programmer’s Reference
Part 2: Service Classes Definition – Programmer’s Reference
Part 3: Printer and Scanning Device Class Interface – Programmer’s Reference
Part 4: Identification Card Device Class Interface – Programmer’s Reference
Part 5: Cash Dispenser Device Class Interface – Programmer’s Reference
Part 6: PIN Keypad Device Class Interface – Programmer’s Reference
Part 7: Check Reader/Scanner Device Class Interface – Programmer’s Reference
Part 8: Depository Device Class Interface – Programmer’s Reference
Part 9: Text Terminal Unit Device Class Interface – Programmer’s Reference
Part 10: Sensors and Indicators Unit Device Class Interface – Programmer’s Reference
Part 11: Vendor Dependent Mode Device Class Interface – Programmer’s Reference
Part 12: Camera Device Class Interface – Programmer’s Reference
Part 13: Alarm Device Class Interface – Programmer’s Reference
Part 14: Card Embossing Unit Device Class Interface – Programmer’s Reference
Part 15: Cash-In Module Device Class Interface – Programmer’s Reference
Part 16: Card Dispenser Device Class Interface – Programmer’s Reference
Part 17: Barcode Reader Device Class Interface – Programmer’s Reference
Part 18: Item Processing Module Device Class
...

SLOVENSKI STANDARD
SIST-TP CWA 16926-6:2023
01-marec-2023
Specifikacija vmesnika razširitev za finančne storitve (XFS), izdaja 3.50 - 6. del:
Vmesnik razreda naprave s tipkovnico PIN - Referenca za programerje
Extensions for Financial Services (XFS) interface specification Release 3.50 - Part 6:
PIN Keypad Device Class Interface - Programmer’s Reference
Ta slovenski standard je istoveten z: CWA 16926-6:2022
ICS:
35.200 Vmesniška in povezovalna Interface and interconnection
oprema equipment
35.240.15 Identifikacijske kartice. Čipne Identification cards. Chip
kartice. Biometrija cards. Biometrics
35.240.40 Uporabniške rešitve IT v IT applications in banking
bančništvu
SIST-TP CWA 16926-6:2023 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST-TP CWA 16926-6:2023

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SIST-TP CWA 16926-6:2023


CEN
CWA 16926-6

WORKSHOP
December 2022

AGREEMENT


ICS 35.200; 35.240.15; 35.240.40
English version


Extensions for Financial Services (XFS) interface
specification Release 3.50 - Part 6: PIN Keypad Device
Class Interface - Programmer's Reference
This CEN Workshop Agreement has been drafted and approved by a Workshop of representatives of interested parties, the
constitution of which is indicated in the foreword of this Workshop Agreement.

The formal process followed by the Workshop in the development of this Workshop Agreement has been endorsed by the
National Members of CEN but neither the National Members of CEN nor the CEN-CENELEC Management Centre can be held
accountable for the technical content of this CEN Workshop Agreement or possible conflicts with standards or legislation.

This CEN Workshop Agreement can in no way be held as being an official standard developed by CEN and its Members.

This CEN Workshop Agreement is publicly available as a reference document from the CEN Members National Standard Bodies.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of North
Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and United Kingdom.



EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members.


Ref. No.:CWA 16926-6:2022 E

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CWA 16926-6:2022 (E)
Table of Contents
European Foreword . 6
1. Introduction . 10
1.1 Background to Release 3.50 . 10
1.2 XFS Service-Specific Programming . 10
2. PIN Keypad . 12
2.1 Encrypting Touch Screen (ETS) . 14
3. References . 17
4. Info Commands . 19
4.1 WFS_INF_PIN_STATUS . 19
4.2 WFS_INF_PIN_CAPABILITIES . 23
4.3 WFS_INF_PIN_KEY_DETAIL . 44
4.4 WFS_INF_PIN_FUNCKEY_DETAIL . 46
4.5 WFS_INF_PIN_HSM_TDATA . 49
4.6 WFS_INF_PIN_KEY_DETAIL_EX . 50
4.7 WFS_INF_PIN_SECUREKEY_DETAIL . 53
4.8 WFS_INF_PIN_QUERY_LOGICAL_HSM_DETAIL . 57
4.9 WFS_INF_PIN_QUERY_PCIPTS_DEVICE_ID . 58
4.10 WFS_INF_PIN_GET_LAYOUT . 59
4.11 WFS_INF_PIN_KEY_DETAIL_340 . 63
5. Execute Commands . 65
5.1 Normal PIN Commands . 65
5.1.1 WFS_CMD_PIN_CRYPT . 65
5.1.2 WFS_CMD_PIN_IMPORT_KEY . 68
5.1.3 WFS_CMD_PIN_DERIVE_KEY . 71
5.1.4 WFS_CMD_PIN_GET_PIN . 73
5.1.5 WFS_CMD_PIN_LOCAL_DES . 76
5.1.6 WFS_CMD_PIN_CREATE_OFFSET . 78
5.1.7 WFS_CMD_PIN_LOCAL_EUROCHEQUE . 80
5.1.8 WFS_CMD_PIN_LOCAL_VISA . 82
5.1.9 WFS_CMD_PIN_PRESENT_IDC . 84
5.1.10 WFS_CMD_PIN_GET_PINBLOCK . 86
5.1.11 WFS_CMD_PIN_GET_DATA . 88
5.1.12 WFS_CMD_PIN_INITIALIZATION . 91
5.1.13 WFS_CMD_PIN_LOCAL_BANKSYS . 93
5.1.14 WFS_CMD_PIN_BANKSYS_IO . 94
5.1.15 WFS_CMD_PIN_RESET . 95
5.1.16 WFS_CMD_PIN_HSM_SET_TDATA . 96
5.1.17 WFS_CMD_PIN_SECURE_MSG_SEND . 98
5.1.18 WFS_CMD_PIN_SECURE_MSG_RECEIVE . 100
5.1.19 WFS_CMD_PIN_GET_JOURNAL . 102
5.1.20 WFS_CMD_PIN_IMPORT_KEY_EX . 103
5.1.21 WFS_CMD_PIN_ENC_IO . 106
5.1.22 WFS_CMD_PIN_HSM_INIT. 108
5.1.23 WFS_CMD_PIN_SECUREKEY_ENTRY . 109

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5.1.24 WFS_CMD_PIN_GENERATE_KCV . 112
5.1.25 WFS_CMD_PIN_SET_GUIDANCE_LIGHT . 113
5.1.26 WFS_CMD_PIN_MAINTAIN_PIN . 115
5.1.27 WFS_CMD_PIN_KEYPRESS_BEEP . 116
5.1.28 WFS_CMD_PIN_SET_PINBLOCK_DATA . 117
5.1.29 WFS_CMD_PIN_SET_LOGICAL_HSM . 118
5.1.30 WFS_CMD_PIN_IMPORT_KEYBLOCK . 119
5.1.31 WFS_CMD_PIN_POWER_SAVE_CONTROL . 120
5.1.32 WFS_CMD_PIN_DEFINE_LAYOUT . 121
5.1.33 WFS_CMD_PIN_START_AUTHENTICATE . 122
5.1.34 WFS_CMD_PIN_AUTHENTICATE . 124
5.1.35 WFS_CMD_PIN_GET_PINBLOCK_EX . 127
5.1.36 WFS_CMD_PIN_SYNCHRONIZE_COMMAND . 129
5.1.37 WFS_CMD_PIN_CRYPT_340 . 130
5.1.38 WFS_CMD_PIN_GET_PINBLOCK_340. 134
5.1.39 WFS_CMD_PIN_IMPORT_KEY_340 . 136
5.2 Common commands for Remote Key Loading Schemes . 139
5.2.1 WFS_CMD_PIN_START_KEY_EXCHANGE. 139
5.3 Remote Key Loading Using Signatures . 140
5.3.1 WFS_CMD_PIN_IMPORT_RSA_PUBLIC_KEY . 140
5.3.2 WFS_CMD_PIN_EXPORT_RSA_ISSUER_SIGNED_ITEM . 143
5.3.3 WFS_CMD_PIN_IMPORT_RSA_SIGNED_DES_KEY . 145
5.3.4 WFS_CMD_PIN_GENERATE_RSA_KEY_PAIR . 148
5.3.5 WFS_CMD_PIN_EXPORT_RSA_EPP_SIGNED_ITEM . 150
5.4 Remote Key Loading with Certificates . 152
5.4.1 WFS_CMD_PIN_LOAD_CERTIFICATE . 152
5.4.2 WFS_CMD_PIN_GET_CERTIFICATE . 153
5.4.3 WFS_CMD_PIN_REPLACE_CERTIFICATE . 154
5.4.4 WFS_CMD_PIN_IMPORT_RSA_ENCIPHERED_PKCS7_KEY . 155
5.4.5 WFS_CMD_PIN_LOAD_CERTIFICATE_EX . 157
5.4.6 WFS_CMD_PIN_IMPORT_RSA_ENCIPHERED_PKCS7_KEY_EX . 159
5.5 EMV . 162
5.5.1 WFS_CMD_PIN_EMV_IMPORT_PUBLIC_KEY . 162
5.5.2 WFS_CMD_PIN_DIGEST . 165
5.6 Entering and Changing a Password . 166
5.6.1 WFS_CMD_PIN_PASSWORD_ENTRY . 166
6. Events . 170
6.1 WFS_EXEE_PIN_KEY . 170
6.2 WFS_SRVE_PIN_INITIALIZED . 171
6.3 WFS_SRVE_PIN_ILLEGAL_KEY_ACCESS . 172
6.4 WFS_SRVE_PIN_OPT_REQUIRED . 173
6.5 WFS_SRVE_PIN_CERTIFICATE_CHANGE . 174
6.6 WFS_SRVE_PIN_HSM_TDATA_CHANGED . 175
6.7 WFS_SRVE_PIN_HSM_CHANGED . 176
6.8 WFS_EXEE_PIN_ENTERDATA . 177
6.9 WFS_SRVE_PIN_DEVICEPOSITION . 178
6.10 WFS_SRVE_PIN_POWER_SAVE_CHANGE . 179
6.11 WFS_EXEE_PIN_LAYOUT . 180
6.12 WFS_EXEE_PIN_DUKPT_KSN . 181
6.13 WFS_SRVE_PIN_PASSWORD_CLEARED . 182

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7. C - Header File . 183
8. Appendix-A . 206
8.1 Remote Key Loading Using Signatures . 207
8.1.1 RSA Data Authentication and Digital Signatures . 207
8.1.2 RSA Secure Key Exchange using Digital Signatures . 208
8.1.3 Initialization Phase – Signature Issuer and ATM PIN . 210
8.1.4 Initialization Phase – Signature Issuer and Host . 211
8.1.5 Key Exchange – Host and ATM PIN . 212
8.1.6 Key Exchange (with random number) – Host and ATM PIN . 213
8.1.7 Enhanced RKL, Key Exchange (with random number) – Host and ATM PIN . 214
8.1.8 Default Keys and Security Item loaded during manufacture . 215
8.2 Remote Key Loading Using Certificates . 216
8.2.1 Certificate Exchange and Authentication . 216
8.2.2 Remote Key Exchange . 217
8.2.3 Replace Certificate . 218
8.2.4 Primary and Secondary Certificates . 219
8.2.5 TR34 BIND To Host . 220
8.2.6 TR34 Key Transport. 221
8.2.7 TR34 REBIND To New Host . 223
8.2.8 TR34 Force REBIND To New Host . 224
8.2.9 TR34 UNBIND From Host . 225
8.2.10 TR34 Force UNBIND From Host . 226
8.3 German ZKA GeldKarte (Deutsche Kreditwirtschaft). 227
8.3.1 How to use the SECURE_MSG commands . 227
8.3.2 Protocol WFS_PIN_PROTISOAS . 228
8.3.3 Protocol WFS_PIN_PROTISOLZ . 229
8.3.4 Protocol WFS_PIN_PROTISOPS . 230
8.3.5 Protocol WFS_PIN_PROTCHIPZKA . 231
8.3.6 Protocol WFS_PIN_PROTRAWDATA . 232
8.3.7 Protocol WFS_PIN_PROTPBM . 233
8.3.8 Protocol WFS_PIN_PROTHSMLDI . 234
8.3.9 Protocol WFS_PIN_PROTGENAS . 235
8.3.10 Protocol WFS_PIN_PROTCHIPINCHG . 239
8.3.11 Protocol WFS_PIN_PROTPINCMP . 240
8.3.12 Protocol WFS_PIN_PROTISOPINCHG . 242
8.3.13 Command Sequence . 243
8.4 EMV Support . 250
8.4.1 Keys loading. 250
8.4.2 PIN Block Management . 252
8.4.3 SHA-1 Digest . 253
8.5 French Cartes Bancaires . 254
8.5.1 Data Structure for WFS_CMD_PIN_ENC_IO . 254
8.5.2 Command Sequence . 256
8.6 Secure Key Entry . 258
8.6.1 Keyboard Layout . 258
8.6.2 Command Usage - WFS_CMD_PIN_SECUREKEY_DETAIL and
WFS_CMD_PIN_IMPORT_KEY . 262
8.6.3 Command Usage - WFS_INF_PIN_GET_LAYOUT and WFS_CMD_PIN_IMPORT_KEY_340 263
8.7 WFS_PIN_USERESTRICTEDKEYENCKEY key usage . 264
8.7.1 Command Usage . 264
8.8 WFS_CMD_PIN_IMPORT_KEY_340 command Input/Output Parameters . 267
8.8.1 Importing a 3DES 16-byte terminal master key using signature-based remote key loading (SRKL):
268
8.8.2 Importing a 16-byte DES key for PIN encryption with a key check value in the input . 270
8.8.3 Importing a 16-byte DES key for MACing (MAC Algorithm 3) . 272
8.8.4 Importing a 2048-bit Host RSA public key . 274

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8.8.5 Importing a 24-byte DES symmetric data encryption key via X9.143 keyblock . 276
8.9 Entering passwords using the WFS_CMD_PIN_PASSWORD_ENTRY command. . 277
8.9.1 Entering passwords individually to allow secure key parts to be loaded . 277
8.9.2 Entering and changing a password . 277
9. Appendix-B (Country Specific WFS_CMD_PIN_ENC_IO protocols) . 279
9.1 Luxemburg Protocol . 279
9.1.1 WFS_CMD_ENC_IO_LUX_LOAD_APPKEY . 281
9.1.2 WFS_CMD_ENC_IO_LUX_GENERATE_MAC . 283
9.1.3 WFS_CMD_ENC_IO_LUX_CHECK_MAC . 284
9.1.4 WFS_CMD_ENC_IO_LUX_BUILD_PINBLOCK . 285
9.1.5 WFS_CMD_ENC_IO_LUX_DECRYPT_TDES . 286
9.1.6 WFS_CMD_ENC_IO_LUX_ENCRYPT_TDES . 287
9.1.7 Luxemburg-specific Header File . 288
9.2 China Protocol . 290
9.2.1 WFS_CMD_ENC_IO_CHN_DIGEST . 293
9.2.2 WFS_CMD_ENC_IO_CHN_SET_SM2_PARAM . 294
9.2.3 WFS_CMD_ENC_IO_CHN_IMPORT_SM2_PUBLIC_KEY . 295
9.2.4 WFS_CMD_ENC_IO_CHN_SIGN . 297
9.2.5 WFS_CMD_ENC_IO_CHN_VERIFY . 299
9.2.6 WFS_CMD_ENC_IO_CHN_EXPORT_SM2_ISSUER_SIGNED_ITEM . 300
9.2.7 WFS_CMD_ENC_IO_CHN_GENERATE_SM2_KEY_PAIR . 302
9.2.8 WFS_CMD_ENC_IO_CHN_EXPORT_SM2_EPP_SIGNED_ITEM . 303
9.2.9 WFS_CMD_ENC_IO_CHN_IMPORT_SM2_SIGNED_SM4_KEY . 305
9.2.10 China-specific Header File . 308
10. Appendix–C (Standardized lpszExtra fields) . 313
10.1 WFS_INF_PIN_STATUS . 313
10.2 WFS_INF_PIN_CAPABILITIES . 314
11. Appendix–D (X9.143 Key Use) . 317
12. Appendix-E (DUKPT) . 320
12.1 Default Key Name. 320
13. Appendix-F Diagram Source . 321

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SIST-TP CWA 16926-6:2023
CWA 16926-6:2022 (E)
European Foreword
This CEN Workshop Agreement has been developed in accordance with the CEN-CENELEC Guide 29
“CEN/CENELEC Workshop Agreements – The way to rapid consensus” and with the relevant provisions of
CEN/CENELEC Internal Regulations – Part 2. It was approved by a Workshop of representatives of interested parties
on 2022-11-08, the constitution of which was supported by CEN following several public calls for participation, the
first of which was made on 1998-06-24. However, this CEN Workshop Agreement does not necessarily include all
relevant stakeholders.
The final text of this CEN Workshop Agreement was provided to CEN for publication on 2022-11-18.
The following organizations and individuals developed and approved this CEN Workshop Agreement:
• AURIGA SPA
• CIMA SPA
• DIEBOLD NIXDORF SYSTEMS GMBH
• FIS BANKING SOLUTIONS UK LTD (OTS)
• FUJITSU TECHNOLOGY SOLUTIONS
• GLORY LTD
• GRG BANKING EQUIPMENT HK CO LTD
• HITACHI CHANNEL SOLUTIONS CORP
• HYOSUNG TNS INC
• JIANGSU GUOGUANG ELECTRONIC INFORMATION TECHNOLOGY
• KAL
• KEBA HANDOVER AUTOMATION GMBH
• NCR FSG
• NEXUS SOFTWARE
• OBERTHUR CASH PROTECTION
• OKI ELECTRIC INDUSTRY SHENZHEN
• SALZBURGER BANKEN SOFTWARE
• SECURE INNOVATION
• SIGMA SPA
It is possible that some elements of this CEN/CWA may be subject to patent rights. The CEN-CENELEC policy on
patent rights is set out in CEN-CENELEC Guide 8 “Guidelines for Implementation of the Common IPR Policy on
Patents (and other statutory intellectual property rights based on inventions)”. CEN shall not be held responsible for
identifying any or all such patent rights.
The Workshop participants have made every effort to ensure the reliability and accuracy of the technical and non-
technical content of CWA 16926-6, but this does not guarantee, either explicitly or implicitly, its correctness. Users
of CWA 16926-6 should be aware that neither the Workshop participants, nor CEN can be held liable for damages

6

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SIST-TP CWA 16926-6:2023
CWA 16926-6:2022 (E)
or losses of any kind whatsoever which may arise from its application. Users of CWA 16926-6 do so on their own
responsibility and at their own risk.
The CWA is published as a multi-part document, consisting of:
Part 1: Application Programming Interface (API) – Service Provider Interface (SPI) – Programmer’s Reference
Part 2: Service Classes Definition – Programmer’s Reference
Part 3: Printer and Scanning Device Class Interface – Programmer’s Reference
Part 4: Identification Card Device Class Interface – Programmer’s Reference
Part 5: Cash Dispenser Device Class Interface – Programmer’s Reference
Part 6: PIN Keypad Device Class Interface – Programmer’s Reference
Part 7: Check Reader/Scanner Device Class Interface – Programmer’s Reference
Part 8: Depository Device Class Interface – Programmer’s Reference
Part 9: Text Terminal Unit Device Class Interface – Programmer’s Reference
Part 10: Sensors and Indicators Unit Device Class Interface – Programmer’s Reference
Part 11: Vendor Dependent Mode Device Class Interface – Programmer’s Reference
Part 12: Camera Device Class Interface – Programmer’s Reference
Part 13: Alarm Device Class Interface – Programmer’s Reference
Part 14: Card Embossing Unit Device Class Interface – Programmer’s Reference
Part 15: Cash-In Module Device Class Interface – Programmer’s Reference
Part 16: Card Dispenser Device Class Interface – Programmer’s Reference
Part 17: Barcode Reader Device Class Interface – Programmer’s Reference
Part 18: Item P
...

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