Area efficient cryptographic method and apparatus
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Feb 20, 2018
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N/A
app pub date -
Aug 14, 2014
filing date -
Dec 24, 2013
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Abstract
A method of improving the efficiency of an encryption/decryption process implementing the NIST FIPS 197 standard which includes a substitution box (S-box) and an inverse substitution (inverse S-box), comprises concatenating the S-box and inverse S-box to form a combined lookup table, and folding the concatenated table to generate a folded lookup table. The folded lookup table may be indexed for an encryption operation and for a decryption operation using a signal indicative of whether encryption or decryption is used.
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