This document establishes the technical system of the IoT device identification and authentication system (BIAS) based on blockchain. Its core architecture consists of the identity resolution agent (IDR agent), the identity object storage agent (IOS agent) and three groups of functional components:
| Functional modules | Core capabilities | Technical features |
|---|---|---|
| IR-FC | Identity lifecycle management | Support for cross-solution identity exchange |
| AM-FC | Authentication policy execution | Multi-solution authentication module compatibility |
| PM-FC | Storage policy control | Support distributed/cloud hybrid storage |
The system supports the composite identity structure of primary identity + alias. The identity object is encapsulated in JSON format, including:
Adopt the identity-object separation storage mode:
| Storage location | Data type | Security requirements |
|---|---|---|
| Blockchain system | Identification package | Tamper-proof storage |
| Cloud storage | Identification object | Customer-defined encryption |
The standard explicitly requires support for the SM2/SM3/SM4 series of cryptographic algorithms to achieve security protection in the following links:
Through the identification and naming mechanism:
For example, in the Intelligent Transportation System (ITS), vehicle equipment is implemented through BIAS:
| Business process | Traditional solution | BIAS solution |
|---|---|---|
| Cross-domain authentication | Centralized PKI interaction required | End-to-end direct verification |
| Identity update | Full-link synchronization | Blockchain single-point write |
Compared with traditional identification solutions, BIAS is innovative in the following aspects:
This standard forms technical synergy with YD/T 3905-2021 to jointly build a decentralized IoT infrastructure.

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Update:
Fri, 12 Jun 2026 05:48:38 +0000