Abstract: Objective The convenience of modification and duplication of electronic documents has made determining their origin and authenticity a significant challenge in judicial forensics. Utilizing the patterns of Revision Identifier (RSID) for document verification holds potential value. Therefore, it is crucial to explore the variation patterns of RSID in OOXML documents, expand the theoretical foundation, and address the limitations of existing verification methods. Methods By simulating various Chinese word processing environments, experiments were conducted to analyze the generation and variation patterns of RSID in OOXML documents across different software versions and application scenarios. General patterns of RSID generation and variation were summarized, and their forensic values were revealed. Results RSID exhibits certain patterns across different word processing software. Similarities and differences in RSID generation rules were observed across different software programs, and these patterns can assist in determining the origin and authenticity of documents to a certain extent. Conclusion RSID provides a new approach to authenticity verification for OOXML documents, offering significant theoretical and practical values. It serves as an important reference for researchers engaged in electronic document authentication.

Key words: revision identifier （RSID）, document authentication, OOXML

摘要： 目的 电子文档易篡改、易复制的特性导致其来源和真实性鉴定成为司法鉴定实践中的难题之一，而利用文档修订标识符（revision identifier，RSID）规律辅助鉴定有一定价值。因此，亟需探索Office Open XML（OOXML）文档的RSID变化规律，拓展相关理论基础，补充现有鉴定方法的不足。方法 通过模拟多种不同中文字处理环境，针对不同软件版本和应用场景，对OOXML文档的RSID生成和变化规律进行实验分析，总结RSID生成和变化的一般规律并揭示其鉴定价值。结果  RSID在不同字处理软件中展现出一定的规律性，且RSID的生成规律在不同软件中存在一致性与差异性，可在一定程度上辅助判断文档来源及真实性。结论   RSID为OOXML文档真实性鉴定增补了新的途径，具有重要的理论研究意义和实践应用价值，有助于为从事电子文档鉴定的研究人员提供重要参考。

关键词: 修订标识符, 文档鉴定, OOXML