My Number Drivers License (MyNa-Menkyo) Specification

1. System Overview

The "My Number Drivers License" (MyNa-Menkyo) records driver's license information in the expansion area of the My Number Card (Individual Number Card). It acts as a valid driver's license for public identification.

AIDs (Application Identifiers)

Type	AID	PIX
ELF-AID	A0 00 00 02 31 04 00 00 00 00 00 00 00 00 00 00	Starts with 04
Executable Module AID	A0 00 00 02 31 05 00 00 00 00 00 00 00 00 00 00	Starts with 05
Instance AID	A0 00 00 02 31 06 00 00 00 00 00 00 00 00 00 00	Starts with 06

Standards: JIS X 6308 (ISO/IEC 7816-5).

2. File Structure (EFs)

File Name	EF-ID	Type	Content	Max Size	Access (Read/Write)
IEF01	00 06	IEF	PIN (4 digits)	4	- / -
WEF01	00 1A	WEF	PIN Setting	3	FREE / -
WEF02	00 1B	WEF	License Information	5845	PIN / Forbidden
WEF03	00 1C	WEF	Electronic Signature	584	PIN / -

Access Control Notes

• PIN: 4 digits (numeric).
• Retry Limit: 10 times.
• Lockout: Requires resetting by Prefectural Public Safety Commission.

3. Data Content (WEF01: PIN Setting)

SFI: 00 1AEncoding: BER-TLV

Data Elements

Tag	Length	Format	Description
C1	1	HEX	PIN Setting Status

Value:

• 01 (Binary 00000001): PIN is set.
• 00 (Binary 00000000): PIN is not set (No Verification required / treated as verified). Note: Bits 8-2 are always 0.

4. Data Content (WEF02: License and Driver History Information)

SFI: 00 1BEncoding: BER-TLV Hash Scope: All data in this file is covered by the Electronic Signature in WEF03.

Data Elements

Tag	Length	Format	Group	Description
C2	7	0201	History	Driver History Info Record Date (EraYYMMDD)
C3	1	HEX	History	Driver Category (Excellent/General/Violation)
C4	6	0208	License	License Color (Gold/Blue/Green etc.)
C5	7	0201	License	License Info Expiration Date (EraYYMMDD)
C6	80	0208	License	License Condition 1
C7	80	0208	License	License Condition 2
C8	80	0208	License	License Condition 3
C9	80	0208	License	License Condition 4
CA	256	-	License	Missing Characters (Gaiji/Ketsuji) 1
CB	256	-	License	Missing Characters (Gaiji/Ketsuji) 2
CC	80	0208	License	License Condition 5
CD	80	0208	License	License Condition 6
CE	80	0208	License	License Condition 7
CF	80	0208	License	License Condition 8
D0	80	0208	License	License Condition 9
D1	80	0208	License	License Condition 10
D2	80	0208	License	License Condition 11
D3	80	0208	License	License Condition 12
D4	256	-	License	Missing Characters 3
D5	256	-	License	Missing Characters 4
D6	256	-	License	Missing Characters 5
D7	80	0208	Common	Remarks 1
D8	80	0208	Common	Remarks 2
D9	80	0208	Common	Remarks 3
DA	80	0208	Common	Remarks 4
DB	80	0208	Common	Remarks 5
DC	80	0208	Common	Remarks 6
DD	80	0208	Common	Remarks 7
DE	80	0208	Common	Remarks 8
DF	80	0208	License	Spare 1
E0	80	0208	License	Spare 2
E1	80	0208	License	Spare 3
E2	80	0208	License	Spare 4
E3	80	0208	License	Spare 5
E4	80	0208	License	Spare 6
E5	80	0208	License	Spare 7
E6	80	0208	License	Spare 8
E7	12	0201	License	License Information Record Number
E8	12	0201	History	Driver History Information Record Number
E9	7	0201	Common	License Date: Motorcycle / Small Special / Moped
EA	7	0201	Common	License Date: Others
EB	7	0201	Common	License Date: Class 2 (Commercial)
EC	1	HEX	Common	License Type: Large (大型)
ED	1	HEX	Common	License Type: Ordinary (普通)
EE	1	HEX	Common	License Type: Large Special (大特)
EF	1	HEX	Common	License Type: Large Motorcycle (大自二)
F0	1	HEX	Common	License Type: Ordinary Motorcycle (普自二)
F1	1	HEX	Common	License Type: Small Special (小特)
F2	1	HEX	Common	License Type: Moped (原付)
F3	1	HEX	Common	License Type: Towing (け引)
F4	1	HEX	Common	License Type: Large Class 2 (大二)
F5	1	HEX	Common	License Type: Ordinary Class 2 (普二)
F6	1	HEX	Common	License Type: Large Special Class 2 (大特二)
F7	1	HEX	Common	License Type: Towing Class 2 (け引二)
F8	1	HEX	Common	License Type: Medium (中型)
F9	1	HEX	Common	License Type: Medium Class 2 (中二)
FA	1	HEX	Common	License Type: Semi-Medium (準中型)
FB	7	-	Common	RFU 1
FC	7	-	Common	RFU 2
FD	7	-	Common	RFU 3
FE	7	-	Common	RFU 4
FF	7	-	Common	RFU 5
100	7	-	Common	RFU 6
101	7	-	Common	RFU 7
102	7	-	Common	RFU 8
103	7	-	Common	RFU 9
104	7	-	Common	RFU 10
105	7	-	Common	RFU 11
106	7	-	Common	RFU 12
107	2000	JPEG2000	Common	Face Photo (Monochrome)

Note: All Date formats are "Era (1 byte) + YYMMDD (6 bytes)". Era: 1=Meiji, 2=Taisho, 3=Showa, 4=Heisei, 5=Reiwa.

4. Electronic Signature (WEF03: Signature)

SFI: 00 1C
Encoding: BER-TLV

Contains the digital signature generated over the entire content of WEF02.

Data Elements

Tag	Length	Format	Description
108	256	BINARY	Signature Value
109	16	0201	Serial Number
10A	48	0201	RFU
10B	80	0201	Issuer Name
10C	130	0201	Subject Name
10D	32	BINARY	Subject Key Identifier

Algorithm

• Hash: SHA-256 (over all data in WEF02, in stored order).
• Signature: RSA-2048.
• Padding: PKCS #1 Version 1.5.

5. Command Reference

SELECT FILE

• CLA: 00
• INS: A4
• P1: 04 (Select by AID)
• P2: 0C
• Data: A0 00 00 02 31 06 00 00 00 00 00 00 00 00 00 00 (Instance AID)

VERIFY (PIN)

• CLA: 00
• INS: 20
• P1: 00
• P2: 82 (Specific to this AP)
• Data: 4-digit PIN (ASCII)

READ BINARY

• CLA: 00
• INS: B0
• P1: 8x (EF-ID MSB or 00)
• P2: xx (EF-ID LSB or Offset)

6. Reference

• 運転免許証及び運転免許証作成システム等仕様書 (仕様書バージョン番号: 010)