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AESE

AES single round encryption.

The AESE instruction reads a 16-byte state array from each 128-bit segment of the first source vector together with a round key from the corresponding 128-bit segment of the second source vector. Each state array undergoes a single round of the AddRoundKey(), SubBytes() and ShiftRows() transformations in accordance with the AES standard. Each updated state array is destructively placed in the corresponding segment of the first source vector. This instruction is unpredicated.

313029282726252423222120191817161514131211109876543210
0100010100100010111000ZmZdn

SVE2

AESE <Zdn>.B, <Zdn>.B, <Zm>.B

if !HaveSVE2AES() then UNDEFINED;
integer m = UInt(Zm);
integer dn = UInt(Zdn);

Assembler Symbols

<Zdn>

Is the name of the first source and destination scalable vector register, encoded in the "Zdn" field.

<Zm>

Is the name of the second source scalable vector register, encoded in the "Zm" field.

Operation

CheckSVEEnabled();
integer segments = VL DIV 128;
bits(VL) operand1 = Z[dn];
bits(VL) operand2 = Z[m];
bits(VL) result;

result = operand1 EOR operand2;
for s = 0 to segments-1
    Elem[result, s, 128] = AESSubBytes(AESShiftRows(Elem[result, s, 128]));

Z[dn] = result;