Data encryption parameter dispersal

    公开(公告)号:US10097518B2

    公开(公告)日:2018-10-09

    申请号:US13919210

    申请日:2013-06-17

    Abstract: A method for securely distributing a profile within a dispersed storage network (DSN) that begins by encrypting a profile using a key. The method continues by encoding the encrypted profile in accordance with a dispersed storage error encoding function. The method continues by outputting the set of encoded profile slices to the DSN for storage therein. The method continues by encoding the key in accordance with an error encoding function and outputting the set of secure key portions to a set of devices of the DSN for storage therein. A device obtains the profile by retrieving secure key portions from the set of devices and recovering the key therefrom. The device then retrieves encoded profile slices from the DSN and decodes them to recover the encrypted profile. The device then decrypts the encrypted profile using the key to recover the profile.

    Changing dispersed storage error encoding parameters
    8.
    发明授权
    Changing dispersed storage error encoding parameters 有权
    改变分散的存储错误编码参数

    公开(公告)号:US09501349B2

    公开(公告)日:2016-11-22

    申请号:US14336195

    申请日:2014-07-21

    Abstract: A method begins with a processing module of a dispersed storage network (DSN) maintaining, over time, a continuum of time-to-repair information regarding a plurality of storage units of the DSN and maintaining, over time, a continuum of time-to-failure information regarding the plurality of storage units. When the continuum of time-to-repair information and the continuum of time-to-failure information are each below undesired levels, the method continues with the processing module changing dispersed storage error encoding parameters of a logical storage vault of the DSN by lowering a decode threshold number with respect to a current decode threshold number and increasing a pillar width number with respect to a current pillar width number. The method continues with the processing module re-encoding stored encoded data of the logical storage vault based on the increased pillar width number and the decreased decode threshold number.

    Abstract translation: 一种方法从分散存储网络(DSN)的处理模块开始,随着时间的推移,维持关于DSN的多个存储单元的修复时间信息的连续性,并且随着时间的推移维持连续的时间 - - 关于多个存储单元的失败信息。 当时间到修复信息的连续性和时间到故障信息的连续性都低于不期望的级别时,该方法继续处理模块通过降低DSN的逻辑存储库的分散的存储错误编码参数来改变 解码相对于当前解码阈值数的阈值数,并相对于当前柱宽数增加柱宽数。 该方法继续处理模块基于增加的柱宽数量和减小的解码阈值数量重新编码逻辑存储库的存储编码数据。

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