Distributed Key Secret For Rewritable Blockchain

Abstract

A system includes circuitry for rewriting blockchains in a non-tamper-evident or tamper-evident operation using a key secret held in portions by multiple individually untrusted parties. The blockchains may include a series of blocks secured by integrity codes that may prevent non-tamper-evident rewrites by non-trusted parties that are not in possession of the key secret or individually-untrusted parties in possession of only a portion of the key secret. In some cases, multiple individually-untrusted parties may combine their portions into the key secret. As a group, the multiple individually-untrusted parties may perform non-tamper-evident operation with respect to at least one integrity code within the blockchain.


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Document History
  • Publication: Sep 26, 2017
  • Application: May 16, 2017
    US US 201715596899 A
  • Priority: Feb 17, 2017
    EP EP 17425018 A
  • Priority: Aug 11, 2016
    EP EP 16425086 A
  • Priority: May 23, 2016
    EP EP 16425044 A

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