Accelerating four-way parallel KECCAK execution on 256-bit vector processor

A method comprises fetching, by fetch circuitry, an encoded XOR3P instruction comprising at least one opcode, a first source identifier to identify a first register, a second source identifier to identify a second register, a third source identifier to identifier a third register, and a fourth source identifier to identify a fourth operand, wherein the first register is to store a first value, the second register is to store a second value, and the third register is to store a third value, decoding, by decode circuitry, the encoded XOR3P instruction to generate a decoded XOR3P instruction, and executing, by execution circuitry, to execute the decoded XOR3P instruction to perform a rotate operation on the third value based on the fourth operand to generate a rotated third value, perform an XOR operation on the first value, the second value, and the rotated third value to generate an XOR result, perform a rotate operation on the XOR result based on the fourth operand to generate a rotated XOR, and store the rotated XOR result.