US Patent No. 10,169,606

VERIFIABLE DATA DESTRUCTION IN A DATABASE


Patent No. 10,169,606
Issue Date January 01, 2019
Title Verifiable Data Destruction In A Database
Inventorship John W. Bell, Lees Summit, MO (US)
Robert Haas, Adliswil (CH)
James S. Luke, Cowes (GB)
John A. Ricketts, Lakeville, MN (US)
Assignee International Business Machines Corporation, Armonk, NY (US)

Claim of US Patent No. 10,169,606

1. A computer-implemented method for verifying data destruction in a database, the method comprising:determining, by a computing device, that a policy event to initiate data destruction for a first set of data has been triggered, the first set of data located on a first file;
identifying, by the computing device, a second set of data on the first file that does not need to be destroyed;
copying, in response to the identifying and prior to the deleting of a first security key, the second set of data to a second file;
generating, in response to the copying and prior to the deleting of the first security key, a second security key for the second file;
encrypting, in response to the generating, the second set of data with the second security key;
deleting, by the computing device and in response to the determining, the first security key used for decrypting the first set of data; and
deleting, by the computing device and in response to the determining, one or more transaction log entries associated with the first set of data, wherein the one or more transaction log entries include a copy of the first set of data, and wherein the one or more transaction log entries are a part of a transaction log, the transaction log being a second file that stores a history of each data change within the database.