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Management of cryptographic keys for securing stored data

  • US 20090034733A1
  • Filed: 07/31/2007
  • Published: 02/05/2009
  • Est. Priority Date: 07/31/2007
  • Status: Active Grant
First Claim
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1. A system for securing stored data, comprising:

  • at least one storage system adapted to receive storage and retrieval requests, each storage system further adapted to, in response to each storage request received at the storage system, obtain a current cryptographic key and an identifier of the current cryptographic key within a sequence of cryptographic keys for the storage system, encrypt data from the storage request into encrypted data using the current cryptographic key, and store the encrypted data and the identifier in a storage media, and each storage system further adapted to, in response to each retrieval request received at the storage system, retrieve encrypted data and an identifier from the storage media, obtain a cryptographic key corresponding to the identifier within the sequence for the storage system, and decrypt the encrypted data using the cryptographic key; and

    a management system coupled to the at least one storage system and adapted to generate the sequence of cryptographic keys for each storage system, the management system further adapted for each storage system to provide the current cryptographic key and the identifier of the current cryptographic key within the sequence for the storage system, and provide the cryptographic key corresponding to an identifier within the sequence for the storage system.

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