简介：ISOTS 320012022 Document management – Portable Document Format – Extensions to Hash Algorithm Support in ISO 32000-2 文档管理-便携式文档格式-IS032000-2中哈希算法支持的扩展(PDF2.0)
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ISOTS 320012022 Document management – Portable Document Format – Extensions to Hash Algorithm Support in ISO 32000-2 文档管理-便携式文档格式-IS032000-2中哈希算法支持的扩展(PDF2.0)