ENCRYPTION/DECRYPTION APPARATUS, CONTROLLER AND ENCRYPTION KEY PROTECTION METHOD
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United States of America Patent
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Issued Date -
Feb 9, 2017
app pub date -
Nov 11, 2015
filing date -
Aug 6, 2015
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Abstract
According to one embodiment, a first encryption key stored in a volatile first storage is input to a data input circuit, the first encryption key input in the data input circuit is encrypted with a second encryption key stored in a volatile second storage, and the access to the data input circuit is limited while the first encryption key is encrypted.
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