ISO/IEC 14543-5-104:2024
Information technology — Home electronic systems (HES) architecture — Part 5-104: Intelligent grouping and resource sharing for HES Class 2 and Class 3 – RA server-based smart lock application

Standard No.

ISO/IEC 14543-5-104:2024

Release Date

2024

Published By

International Organization for Standardization (ISO)  IX  /  ISO

Latest

ISO/IEC 14543-5-104:2024

Introduction

Analysis of the core framework of the standard

The ISO/IEC 14543-5-104:2024 standard builds a smart door lock management system based on the remote access server (RAS), and realizes the secure interaction between the Bluetooth smart door lock device (BSLD) and the cloud through the Bluetooth gateway (BGW). The standard adopts a layered security architecture:

Security level	Technical implementation	Protection goal
Transport layer	HTTPS/XMPP over TLS	Anti-eavesdropping/man-in-the-middle attack
Data layer	AES128 CBC encryption	Data confidentiality protection
Authentication layer	Three-level authentication (user/RAS/device)	Identity legitimacy verification

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Technical specifications of key components

1. Remote Access Server (RAS)

As the core management node, RAS needs to implement:

• User Data Management Service (UDMS): Stores two-factor authentication information for mobile phone numbers/email addresses
• Device Data Management Service (DDMS): Maintains globally unique device identifiers (12-character MAC addresses)
• Security Authentication Service (SCS): Uses SASL mechanism for session authentication

2. Bluetooth Gateway (BGW)

As a HES gateway implementation, it must support:

• Bidirectional conversion between Bluetooth 4.0+ and TCP/IP protocol stack
• Real-time message routing function (see standard Figure 5 process)
• Comply with the interoperability requirements of ISO/IEC 18012-3

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Device interaction process

Registration process

1. RAC discovers BSLD through Bluetooth broadcast (obtains device unique identifier)
2. RAS verifies device legitimacy (HTTP status code 0/1 mechanism)
3. Key negotiation uses two-stage AES128-CBC encryption (standard 8.a/b clauses)

Control flow

Typical operation command format:

 | Command ID(1B) | Type(1B) | Value(9B) | Check(1B) | Timestamp(4B) | |-----------|-----------|--------|-----------| | 0x03 | 0x01 | Operation code| XOR result| Unix time| 

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Implementation suggestions

Security enhancement measures

• It is recommended to add geo-fence detection function when deploying RAS
• BSLD should implement anti-replay attack mechanism (timestamp validity check)
• Access to the third-party service platform (TPSP) requires OAuth2.0 authorization

Interoperability test

Key points to verify:

1. Coexistence of BSLDs from different manufacturers under the same BGW
2. Data synchronization delay during RAS cluster deployment
3. Backward compatibility of Bluetooth 5.0 and 4.2 devices

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Technology evolution analysis

Major improvements of this standard compared to traditional door lock solutions:

• Architecture innovation: Use server centralized authentication mode instead of local storage key
• Protocol optimization: Define a 16-byte reduced instruction set to improve Bluetooth transmission efficiency
• Scalability: Support value-added services such as blockchain through TPSP interface (refer to ISO/IEC 14543-5-141)

ISO/IEC 14543-5-104:2024 Referenced Document

• ISO/IEC 14543-5-8 Information technology - Home electronic systems (HES) architecture - Part 5-8: Intelligent grouping and resource sharing for HES Class 2 and Class 3 - Remote access core protocol
• ISO/IEC 14543-5-9 Information technology — Home electronic systems (HES) architecture — Part 5-9: Intelligent grouping and resource sharing for HES class 2 and class 3 — Remote access service platform
• ISO/IEC 15045-1:2004 Information technology-Home electronic system (HES) gateway-Part 1:A residential gateway model for HES
• ISO/IEC 15045-2:2012 Information technology - Home Electronic System (HES) gateway - Part 2: Modularity and protocol
• ISO/IEC 18012-1:2004 Information technology - Home Electronic System - Guidelines for product interoperability - Part 1: Introduction
• ISO/IEC 18012-2:2012 Information technology - Home Electronic System - Guidelines for product interoperability - Part 2: Taxonomy and application interoperability model

ISO/IEC 14543-5-104:2024 history

• 2024 ISO/IEC 14543-5-104:2024 Information technology — Home electronic systems (HES) architecture — Part 5-104: Intelligent grouping and resource sharing for HES Class 2 and Class 3 – RA server-based smart lock application

Standard and Specification