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    Strengthened entity identity for digital record signature infrastructure
    2.
    发明授权
    Strengthened entity identity for digital record signature infrastructure 有权

    公开(公告)号：US10200199B2

    公开(公告)日：2019-02-05

    申请号：US15854418

    申请日：2017-12-26

    申请人： Guardtime IP Holdings Limited

    发明人： Ahto Truu ,  Andres Kroonmaa

    IPC分类号： H04L9/32 ,  H04L9/14 ,  H04L9/06 ,  H04L9/30

    摘要： At least one node in a distributed hash tree verification infrastructure is augmented with either a function of a signature of a child computational node, or of a child entity attestation value derived from an HMAC value of the child entity, or both. A data signature, which includes parameters for recomputation of a verifying value, and which is associated with a digital input record, will therefore also include data that identifies at least one child entity in the hash tree path used for its initial registration in the infrastructure.

    Document verification with ID augmentation
    4.
    发明授权
    Document verification with ID augmentation 有权
    文件验证与ID增加

    公开(公告)号：US09473306B2

    公开(公告)日：2016-10-18

    申请号：US13959734

    申请日：2013-08-05

    申请人： GUARDTIME IP HOLDINGS LIMITED

    发明人： Ahto Buldas ,  Ahto Truu ,  Andres Kroonmaa

    IPC分类号： H04L9/32

    CPC分类号： H04L9/3247 ,  H04L9/3239

    摘要： At least one node in a distributed hash tree document verification infrastructure is augmented with an identifier of an entity in a registration path. A data signature, which includes parameters for recomputation of a verifying value, and which is associated with a digital input record, will therefore also include data that identifies at least one entity in the hash tree path used for its initial registration in the infrastructure.

    摘要翻译： 分布式散列树文档验证基础结构中的至少一个节点用注册路径中的实体的标识符进行扩充。 因此，包括用于重新计算验证值的参数并且与数字输入记录相关联的数据签名将包括标识用于其在基础设施中初始注册的散列树路径中的至少一个实体的数据。

    Non-deterministic time systems and methods
    5.
    发明授权
    Non-deterministic time systems and methods 有权
    非确定性时间系统和方法

    公开(公告)号：US09178708B2

    公开(公告)日：2015-11-03

    申请号：US14094252

    申请日：2013-12-02

    申请人： GUARDTIME IP HOLDINGS LIMITED

    发明人： Michael Gault ,  Ahto Truu ,  Ahto Buldas ,  Martin Ruubel ,  Jeffrey Pearce

    IPC分类号： H04L29/06 ,  G06F21/00 ,  H04L9/32 ,  G06Q20/00

    CPC分类号： H04L9/3297 ,  G06F2221/0733 ,  G06F2221/0737 ,  H04L9/3247 ,  H04L9/3265 ,  H04L2463/121

    摘要： A capture device such as a camera and/or sound recorder records an event, which includes a visual and/or audible presentation of a time value that is non-deterministic, yet a function of physical time. The non-deterministic time value (NDT) may be generated as a function of a calendar value created at time intervals as a root hash value of a distributed, hash-tree document authentication infrastructure. If the NDT value included in the recording of the event does not match the NDT value corresponding to the calendar value from which it was generated, the recording may be assumed to be altered. Digital time-stamping may be included for the recording of the event to reduce the opportunity for back-dating of the recording. NDT may also be generated simply for display by a clock, for example as an NDT time zone.

    摘要翻译： 诸如相机和/或声音记录器的捕获装置记录事件，其包括非确定性的时间值的视觉和/或听觉显示，但是物理时间的功能。 可以根据分布式散列树文档认证基础设施的根散列值以时间间隔创建的日历值的函数来生成非确定性时间值（NDT）。 如果包括在事件记录中的NDT值与其生成的日历值对应的NDT值不匹配，则可以假设记录被改变。 可以包括数字时间戳记用于记录事件以减少记录回溯的机会。 NDT也可以简单地由时钟产生，例如作为NDT时区。