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    • 4. 发明申请
    • METHOD AND SYSTEM FOR DETECTING MOVEMENT OF A SIGNED ELEMENT IN A STRUCTURED DOCUMENT
    • 用于检测结构化文档中的符号元素的运动的方法和系统
    • US20080005660A1
    • 2008-01-03
    • US11427408
    • 2006-06-29
    • Paula K. AustelMaryann HondoMichael MclntoshAnthony J. Nadalin
    • Paula K. AustelMaryann HondoMichael MclntoshAnthony J. Nadalin
    • G06F17/00
    • G06F17/30908G06F21/64
    • A system in which a sending entity creates a structured document and communicates that document to a receiving entity includes a transform to ensure that document elements are not moved during communication. The structured document is typically XML, and the document comprises a root element and a set of one or more child elements. At least one child element is protected, for example, by a digital signature, prior to being positioned within the XML document. This “signed” element includes a sending entity security policy, preferably in the form of a position dependent or absolute path expression. The receiving entity includes a transform that determines whether the signed element is in a given position within the received XML document. Typically, the given position is the position at which the signed element was placed within the structured document by the sending entity. The transform evaluates the data string against a set of one or more ancestor elements of the signed element to determine whether the signed element is in the given position within the received document. If so, the transform preferably outputs the signed element itself. If the transform determines that the signed element has been moved, however, preferably it outputs a given value other than the signed element. The transform is computationally-inefficient because it works by enforcing an intended path (as specified in the position dependent or absolute path expression) from the signed element back up to the XML document root. In effect, the algorithm requires visitation of only the referenced element's ancestors, and not the entire XML tree.
    • 发送实体创建结构化文档并将该文档传送到接收实体的系统包括转换以确保文档元素在通信期间不被移动。 结构化文档通常是XML,并且文档包括根元素和一组一个或多个子元素。 至少一个子元素在被定位在XML文档之前被保护,例如通过数字签名。 该“签名”元素包括发送实体安全策略,优选地以位置相关或绝对路径表达的形式。 接收实体包括一个变换,该变换确定有符号元素是否处于接收的XML文档内的给定位置。 通常,给定的位置是发送实体在签名元素放置在结构化文档内的位置。 变换根据有符号元素的一个或多个祖先元素的集合来评估数据串,以确定有符号元素是否处于接收到的文档内的给定位置。 如果是,变换优选地输出有符号元素本身。 然而,如果变换确定有符号元素已被移动,则优选地,它输出除了带符号元素之外的给定值。 该转换在计算上是低效的,因为它通过从signed元素备份到XML文档根来强制执行预定的路径(在位置相关或绝对路径表达式中指定)。 实际上,该算法只需要访问引用元素的祖先,而不是整个XML树。
    • 6. 发明授权
    • Method and system for detecting movement of a signed element in a structured document
    • 用于检测结构化文档中有符号元素的移动的方法和系统
    • US09292619B2
    • 2016-03-22
    • US11427408
    • 2006-06-29
    • Paula K. AustelMaryann HondoMichael McIntoshAnthony J. Nadalin
    • Paula K. AustelMaryann HondoMichael McIntoshAnthony J. Nadalin
    • G06F17/00G06F17/30G06F21/64
    • G06F17/30908G06F21/64
    • A sending entity creates a structured document and communicates it to a receiving entity includes a transform to ensure document elements are not moved during communication. The structured document comprises a root element and a set of child elements. A child element is protected by a digital signature, prior to being positioned within the document. This element includes a sending entity security policy. The receiving entity includes a transform that determines whether the signed element is in a given position within the received document. The transform evaluates the data string against a set of ancestor elements of the signed element to determine whether the signed element is in the given position. If so, the transform preferably outputs the signed element itself. If the transform determines that the signed element has been moved, however, preferably it outputs a given value other than the signed element.
    • 发送实体创建结构化文档并将其传送到接收实体包括转换以确保文档元素在通信期间不被移动。 结构化文档包括根元素和一组子元素。 子元素在被放置在文档中之前被数字签名保护。 该元素包括发送实体安全策略。 接收实体包括一个变换,该变换确定有符号元素是否在接收的文档内的给定位置。 该变换根据有符号元素的一组祖先元素来评估数据字符串,以确定有符号元素是否在给定的位置。 如果是,变换优选地输出有符号元素本身。 然而,如果变换确定有符号元素已被移动,则优选地,它输出除了带符号元素之外的给定值。