本文件规定了完整性等级的概念以及相应的完整性等级要求。它对定义和使用完整性级别及其相应的完整性级别要求提出了要求，并推荐了方法。它涵盖了系统、软件产品及其元素，以及相关的外部依赖关系。本文件未规定一组特定的完整性级别或其完整性级别要求。此外，它没有规定完整性级别使用与整个系统或软件工程生命周期过程集成的方式。

This document specifies the concept of integrity levels with the corresponding integrity level requirements for achieving the integrity levels. Requirements and recommended methods are provided for defining and using integrity levels and their corresponding integrity level requirements. This document covers systems, software products, and their elements, as well as relevant external dependences. This document is applicable to systems and software and is intended for use by: a) definers of integrity levels such as industry and professional organizations, standards organizations, and government agencies; b) users of integrity levels such as developers and maintainers, suppliers and acquirers, system or software users, assessors of systems or software and administrative and technical support staff of systems and/or software products. One important use of integrity levels is by suppliers and acquirers in agreements, for example, to aid in assuring safety, financial, or security characteristics of a delivered system or product. This document does not prescribe a specific set of integrity levels or their integrity level requirements. In addition, it does not prescribe the way in which integrity level use is integrated with the overall system or software engineering life cycle processes. It does, however, provide an example of use of this document in Annex A.