AES64KS2

AES-64 Key Schedule Instruction 2

AES64KS2 rd, rs1, rs2

Performs the second part of the AES-192/256 key schedule generation (RV64).

Encoding

Binary Layout

0111111

31:25

rs2

24:20

rs1

19:15

000

14:12

rd

11:7

0110011

6:0

 

Format R-Type

Opcode 0x7E000033

Extension Zkne

Operands

• rd
  Destination register (integer)
• rs1
  Source register 1 (integer)
• rs2
  Source register 2 (integer)

Example

AES64KS2 t0, a0, a1

Related

More in Zkne

Reference

View in RISC-V Unprivileged ISA Specification ↗ RISC-V ISA Manual

Description

AES64KS2 performs the second step of the AES-256 key schedule, XORing rs1 with the appropriate bytes of rs2.

Operation

rd = aes_key_schedule_2(rs1, rs2);