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Secure database backup and recovery

  • US 9,929,861 B2
  • Filed: 04/26/2017
  • Issued: 03/27/2018
  • Est. Priority Date: 11/06/2014
  • Status: Active Grant
First Claim
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1. A method for secure database backup and recovery in a secure database network having N distributed data nodes, wherein N is an integer greater than 2, the method comprising:

  • receiving a database backup file from a database system;

    fragmenting the file into n fragments, wherein n is an integer greater than 2;

    associating each fragment with a data node of the N distributed data nodes that will not be used to store the fragment;

    encrypting each fragment of the n fragments using a first key;

    storing the n fragments on the N distributed data nodes whereby no fragment is stored on its associated data node;

    retrieving the n fragments a determined time later from the N distributed data nodes;

    decrypting each fragment of the n fragments using the first key;

    encrypting each fragment of the n fragments again with a different key;

    storing the n fragments again on the N distributed data nodes whereby no fragment is stored on its associated data node;

    wherein after retrieving each fragment from a respective data node, said fragment is stored again on a different data node from the data node it was retrieved from, andwherein determining fragment data node location is performed by a sensor in the data node;

    that monitors communications traffic between data nodes andthat listens for communications requests and sends back responses including stored fragments.

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