Method and apparatus for deleting data upon expiration

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Filing Information

  • Publication Number: US20060143443
  • Application Number: US11051952
  • Filing date: 02/04/2005
  • Publication date: 06/29/2006
  • Predicted expiration date: 02/04/2025
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12 Claims, 3 Drawings


Abstract

A method and apparatus for efficiently deleting data including backup or snapshots upon expiration are disclosed. The data can be deleted even without physical access to the data. A data generation unit generates a data. Each data has an expiration time and should be deleted upon expiration. An encryption unit encrypts the data, and the encrypted data is stored in data storage. A controller monitors whether there is an expired data, and if there is an expired data, the controller deletes a key necessary for decrypting the expired data.

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Independent Claims | See all claims (12)

  1. 1. A method for deleting data upon expiration comprising: generating data; encrypting the data; storing the encrypted data in a data storage; and deleting a key necessary for decrypting the encrypted data when the encrypted data expires.
  2. 6. An apparatus for deleting data upon expiration comprising: a data generation unit for generating data; an encryption unit for encrypting the data; and a controller for deleting a key necessary for decrypting the encrypted data when the encrypted data expires; and a storage for storing the encrypted data.