电能计量.支付系统.第42部分:交易参考号（TRN）

[中文适用范围]： 本文档规定了一种令牌生成机制和令牌结构，用于智能预付功能市场，其中未使用符合IEC 62055-41的系统，且项目特定或国家要求需要不同的安全机制。本文档规定了令牌结构、认证、防重放机制、令牌运行模型和协议。本文档参考了STS协会密钥管理服务以及IEC 62056-6-2中DLMS/COSEM安全模型内使用的密钥管理机制。参考了国际STS令牌标准（IEC 62055-41、IEC 62055-51和IEC 62055-52），并在十进制域中的令牌载体范围方面考虑了互操作性。IEC 62055-41令牌和本文件中描述的令牌不互通，但它们的域设计为互斥，以确保两种令牌不会相互干扰。计量应用处理和功能、HAN接口命令和属性、WAN接口命令和属性不在本文档的范围内；不过，在这方面参考了其他标准。从计量中审核和检索与费率、计量读数、档案数据和其他法定计量信息相关数据的机制不在本文档的范围内；不过，这是任何整体计量解决方案的一部分。此类从计量检索数据的接口可以使用IEC 62056系列中定义的适当协议（如DLMS/COSEM）来定义。 [外文原描述]： IEC 62055-42:2022, specifies a token generation mechanism and token structure for smart prepayment functionality in markets where IEC 62055-41 compliant systems are not used, and where a different security mechanism is required by project-specific or national requirements. This document specifies token structure, authentication and an anti-replay mechanism, token operating model, and protocol. This document is informed by the STS Association key management services, and by the key management mechanisms used within the DLMS/COSEM security model within IEC 62056‑6‑2. Reference is made to the international STS token standards (IEC 62055-41, IEC 62055-51 and IEC 62055-52) for payment metering systems, and interworking has been considered where appropriate in terms of token carrier ranges in the decimal domain. IEC 62055-41 tokens and those described in this document are not interoperable, however their domains are designed to be mutually exclusive to ensure the two kinds of tokens do not interfere with each other. Metering application processing and functionality, HAN interface commands and attributes, WAN interface commands and attributes are outside the scope of this document; however, reference is made to other standards in this regard. The mechanism for auditing and retrieving data from the meter relating to tariffication, meter readings, profile data and other legal metrology information is outside the scope of this document; however, this is defined as part of any overall metering solution. Such interfaces for retrieving data from a meter may be defined using suitable protocols such as DLMS/COSEM as defined in the IEC 62056 series.