Cascaded data encryption dependent on attributes of physical memory
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United States of America Patent
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Oct 14, 2014
Grant Date -
Nov 1, 2012
app pub date -
Apr 29, 2011
filing date -
Apr 29, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
Apparatus and method for providing data security through cascaded encryption. In accordance with various embodiments, input data are encrypted in relation to a first auxiliary data value to provide first level ciphertext. The first level ciphertext are encrypted using a second auxiliary data value associated with a selected physical location in a memory to produce second level ciphertext, which are thereafter stored to the selected physical location. In some embodiments, migration of the stored data to a new target location comprises partial decryption and re-encryption of the data using a third auxiliary data value associated with a new target physical location to produce third level ciphertext, and the storage of the third level ciphertext to the new target physical location.
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