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System and method for providing different levels of key security for controlling access to secured items

  • US 8,341,406 B2
  • Filed: 04/04/2011
  • Issued: 12/25/2012
  • Est. Priority Date: 12/12/2001
  • Status: Expired due to Term
First Claim
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1. A method comprising:

  • receiving, by at least one processing device, a request to access a header of a secured file, wherein the header comprises a file key, at least the header of the secured file is configured to be decrypted by a user key, and a data portion of the secured file is configured to be decrypted by the file key;

    obtaining, by the at least one processing device, the user key from a particular storage location that indicates a level of security of the user key, wherein the level of security is defined in a policy based on a degree of access privileges provided by the user key and a requirement that the user key be obtained from the particular storage location based on the level of security of the user key; and

    decrypting, by at the least one processing device, the header using the user key to produce the file key.

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