Instructions and logic to provide SIMD SM4 cryptographic block cipher

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United States of America Patent

PATENT NO 11849035
APP PUB NO 20220353070A1
SERIAL NO

17718237

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Abstract

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Instructions and logic provide for a Single Instruction Multiple Data (SIMD) SM4 round slice operation. Embodiments of an instruction specify a first and a second source data operand set, and substitution function indicators, e.g. in an immediate operand. Embodiments of a processor may include encryption units, responsive to the first instruction, to: perform a slice of SM4-round exchanges on a portion of the first source data operand set with a corresponding keys from the second source data operand set in response to a substitution function indicator that indicates a first substitution function, perform a slice of SM4 key generations using another portion of the first source data operand set with corresponding constants from the second source data operand set in response to a substitution function indicator that indicates a second substitution function, and store a set of result elements of the first instruction in a SIMD destination register.

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Patent Owner(s)

Patent OwnerAddress
INTEL CORPORATIONSANTA CLARA CA

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Feghali, Wajdi K Boston, US 156 1449
Gopal, Vinodh Westborough, US 365 2573
Gulley, Sean M Sudbury, US 48 499
Wolrich, Gilbert M Framingham, US 177 1941
Yap, Kirk S Westborough, US 109 924

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