电能计量.支付系统.第41部分:标准传输规范（STS）.单向令牌载波系统的应用层协议

[中文适用范围]： 本部分IEC 62055规定了STS的应用层协议，用于在一个单向令牌载体系统中从销售点（POS）系统向符合STS的支付仪表传输信用单位和其他管理信息。它主要适用于采用基于能源的令牌的无费率电力支付仪表，但也可能适用于基于货币的令牌系统以及其他非电力服务。 它规定了： - 使用OSI模型作为参考的POS到令牌载体接口，包括应用层协议和物理层协议； - 应用层协议的令牌，用于从POS向支付仪表传输各种消息； - 应用层协议中的安全功能和过程，如标准传输算法和数据加密算法，包括相关加密密钥的生成和分发； - 支付仪表应用层协议中的安全功能和过程，如解密算法、令牌认证、验证和取消； - 仪表应用过程中响应接收到的令牌的具体要求； - 处理仪表应用过程中支付仪表功能的方案及相关配套规范； - 符合STS的密钥管理系统的通用要求； - 密钥管理系统的指南； - STS系统中使用的实体和标识符； - 在修订的基础日期集中处理TID滚动密钥变更的管理实践规范； - STS协会提供的管理实践和维护支持服务。 本部分适用于需要接受符合STS的令牌的支付仪表制造商，以及需要生成符合STS的令牌的POS系统制造商，应与IEC 62055-5x系列一起阅读。 符合STS的产品只需要遵守本文件的部分内容，具体内容由购买合同规定（参见条款C.12）。 注：虽然本文件是为电力支付系统开发的，但也为其他公用事业服务（如水和燃气）使用的令牌提供了规定。 [外文原描述]： IEC 62055-41:2018 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy way to compare all the changes between the official IEC Standard and its previous edition. IEC 62055-41:2018 specifies the application layer protocol of the standard transfer specification (STS) used for transferring units of credit and other management information from a point of sale (POS) system to an STS-compliant payment meter in a one-way token carrier system. It is primarily intended for application with electricity payment meters without a tariff employing energy-based tokens, but may also have application with currency-based token systems and for services other than electricity. It is intended for use by manufacturers of payment meters that have to accept tokens that comply with the STS and also by manufacturers of POS systems that have to produce STS-compliant tokens and is to be read in conjunction with IEC 62055-5x series. This third edition cancels and replaces the second edition of IEC 62055-41, issued in 2014. It constitutes a technical revision. The main technical changes with regard to the previous edition are as follows: - currency transfer tokens for electricity, water, gas and time metering; - finer resolution for gas and time credit transfer; - common code PAN for 2 and 4 digit manufacturer codes; - reserved MfrCode values for certification and testing purposes; - provision for DLMS/COSEM as a virtual token carrier type; - addition of DKGA04, an advanced key derivation function from 160-bit VendingKey; - withdrawal of DES for EA09 and TDES for DKGA03 cryptographic algorithms, but DES for DKGA02 remains in use; - addition of MISTY1 cryptographic algorithm using a 128-bit DecoderKey with supporting key change tokens; - transfer of SGC values to the meter via key change tokens; - revision of the test/display token requirements; - revision of the KMS to reflect current best practice; - revision of the TID roll over management guidelines; - definition of BaseDate is referenced to Coordinated Universal Time; - some clarifications and additional examples have been added.