GA/T 467-2019 in English
VALIDTechnical specifications for interfaces of secure access modules for Resident Identity Card authentication
- Issued on:2019-12-24
- Implemented on:-
- File Format:PDF
- Delivery:Via email within 5 business days
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本标准规定了居民身份证验证安全控制模块的射频模块接口和业务终端接口的技术要求。
本标准适用于使用居民身份证验证安全控制模块的相关产品的设计、生产、使用和检测等。
Introduction
Interpretation of the core content of the standard
GA/T 467-2019 is a recommended standard for the public security industry, replacing the 2013 version and adding a number of technical requirements:
| Improvement dimensions | 2013 version | 2019 version |
|---|---|---|
| Nature of the standard | Mandatory | Recommended |
| Module classification | Undifferentiated | Clearly define the three categories of SAM_A_I/II/III |
| Transmission rate | Up to 300kbps | Added support for 1Mbps |
| Security algorithm | Unspecified | Integrated SM2/SM3/SM4 national secret algorithm |
Key interface technical requirements
RF module interface
Three types of modules use different physical interfaces:
- SAM_A_I: 34-pin IDC socket
- SAM_A_II: 22-pin SATA connector
- SAM_A_III: LGA28 package
Data transmission timing parameters are strictly specified, such as in serial transmission mode:
| Rate | Clock cycle | Setup time |
|---|---|---|
| 1Mbps | 0.45-0.55μs | ≥50ns |
| 300kbps | 1.5-1.8μs | ≥50ns |
Typical Application Cases
ID Card Verification Process
- Send 0x20 0x01 to find an ID card
- After receiving a 4-byte UID, send 0x20 0x02 to select a card
- Use the 0x30 series of commands to obtain text/photo/fingerprint information
- Use the SM3 algorithm to verify information integrity
New class=instrument>SAM_A_III supports identification code comparison function and can verify 20 sets of identity information at the same time.
Implementation suggestions
- Consider the interface compatibility of the terminal device when selecting the module type
- For high-frequency scenarios, it is recommended to use SAM_A_III that supports 1Mbps
- SM2 digital signature verification should be enabled for security-sensitive applications
- Pay attention to the RESET signal timing requirements (low level is maintained for 0.8-1ms)
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