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Method and system for securing data utilizing redundant secure key storage

  • US 7,653,202 B2
  • Filed: 04/05/2005
  • Issued: 01/26/2010
  • Est. Priority Date: 06/14/2004
  • Status: Active Grant
First Claim
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1. A method of securing data in a data processing device having an encryption device for encrypting and decrypting data using an encryption key-password pair, comprising the steps of:

  • a key generating device of the data processing device generating a first encryption key by providing a first password and a first key, seed, and deriving the first encryption key from the first password, the first key seed, and a current key;

    the key generating device storing the first encryption key in a first location in a memory;

    the key generating device generating at least one redundant encryption key corresponding to the first encryption key;

    the key generating device storing each of the at least one redundant encryption key in a memory in a distinct location; and

    storing, at a register in the data processing device, the memory location of each of the first encryption key and the at least one redundant encryption key,wherein to encrypt or decrypt a first set of data the first encryption key is retrieved by an encryption device comprised in the data_processing device but upon the occurrence of a particular event one of the at least one redundant encryption key is retrieved.

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