Signal processor with an encrypting or decrypting device in a memory system
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United States of America Patent
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Jun 16, 2015
Grant Date -
Aug 21, 2008
app pub date -
Jan 23, 2008
filing date -
Feb 20, 2007
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Abstract
Original data to be a source for an encryption key is read from a memory cell array and stored in a buffer region. An encryption key generation unit generates a plurality of encryption keys by variously modifying the original data read from the buffer region based on a predetermined generation rule. The encryption unit generates an encrypted command by encrypting commands individually with an encryption key different for each command, out of the plurality of encryption keys generated by the encryption key generation unit.
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