SIMD SM4 INSTRUCTIONS AND LOGIC TO PROVIDE SIMD SM4 CRYPTOGRAPHIC BLOCK CIPHER FUNCTIONALITY

摘要

The instructions and logic provide Single Instruction Multiple Data (SIMD) SM4 round slice operations. Embodiments of the instructions specify a set of first and second source data operands and, for example, a substitution function indicator in an immediate operand. A processor in accordance with an embodiment is configured to, in response to a first instruction, generate a first set of data operand sets for a portion of a first set of source data operands using a corresponding key from a second set of source data operands, Performs a slice of the SM4 key exchange using the other part of the first source data operand set together with the corresponding constant from the second source data operand set if the replacement function indicator indicates a second permutation function, And an encryption unit to store the set of result elements of the first instruction in the SIMD destination register.;