Precalculated encryption key
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United States of America Patent
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-
Dec 8, 2015
Grant Date -
Feb 4, 2010
app pub date -
Mar 12, 2007
filing date -
Mar 12, 2007
priority date (Note) -
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status (Latency Note)
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Abstract
An authenticated encryption method includes receiving, by an Advanced Encryption Standard (AES) engine, a cipher key and computing a hash key using the received cipher key. The computed hash key is stored in a storage memory. The AES engine then receives a packet of data and encrypts the packet of data using the received cipher key. The hash key from the storage memory is sent to a GHASH engine which is used to authenticate the packet of data. Encrypting the packet of data is performed after the hash key is stored in the storage memory. Input flow of the packet of data is enabled after the hash key is stored in the storage memory.
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