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DIGITAL DATA RETENTION MANAGEMENT

  • US 20150134619A1
  • Filed: 08/21/2014
  • Published: 05/14/2015
  • Est. Priority Date: 11/08/2013
  • Status: Active Grant
First Claim
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1. A method for operating a storage system, a retention management system and a trusted component, said storage system being configured for storing data objects and metadata associated thereto, said retention management system being operable for data processing, said trusted component being operable for providing access to a secure date or time basis and for performing cryptographic operations by using internally stored secret data, said method comprising:

  • calculating a retention date associated with a data object in said storage system;

    generating a cryptographic checksum for metadata relating to said data object in said trusted component, the metadata comprising the retention date;

    storing said metadata and said cryptographic checksum; and

    based on receiving a request to perform a deletion transaction on said data object for deleting said data object from the storage system;

    verifying metadata validity by checking the cryptographic checksum for the metadata associated with said data object to detect possible tampering of the metadata;

    verifying retention expiration by determining that a current date is past the retention date comprised in said metadata; and

    based on successful verification of metadata validity and retention expiration, authorizing deletion of said data object by the storage system.

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