Encryption processor of memory card and method for writing...

Cryptography – Communication system using cryptography

Reexamination Certificate

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Details

C380S259000, C380S260000, C380S265000, C713S190000

Reexamination Certificate

active

08054972

ABSTRACT:
An encryption processor, for storing encrypted data in a memory chip of a memory card, includes a FIFO memory for sequentially outputting m-bit data in response to a first signal, and an encryption key generator for generating m-bit encrypted keys (m being a positive integer) in response to a second signal and for sequentially outputting the keys in response to a third signal. A logic operator performs a logic operation on the data from the FIFO memory with the keys from the encryption key generator during a data write operation to sequentially encrypt the data. The logic operator performs a logic operation on the encrypted data received from a memory interface with the keys output from the encryption key generator during a data read operation in order to sequentially decode the encrypted data. The second signal is simultaneously generated with one of the write command or the read command.

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patent: 2005-045760 (2005-02-01), None
patent: 1020050115151 (2005-12-01), None
patent: 2005/004382 (2005-01-01), None

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