ARM汇编提供了一些加密扩展指令，可以实现高效的加解密运算。以下是一个使用AES加密扩展指令的汇编代码示例：

.section .data
input:
  .byte 0x32, 0x43, 0xf6, 0xa8, 0x88, 0x5a, 0x30, 0x8d, 0x31, 0x31, 0x98, 0xa2, 0xe0, 0x37, 0x07, 0x34

.section .text
.syntax unified

.global main

main:
  push {r4, lr}

  ldr r0, =input
  ldr r1, [r0]          // load input data
  ldr r2, [r0, #4]
  ldr r3, [r0, #8]
  ldr r4, [r0, #12]

  mov r0, #0            // crypto direction - 0 for encryption, 1 for decryption
  mov r5, #0            // AES key size - 0 for 128-bit key
  mov r6, #0            // byte swap - 0 for no byte swap

  vpush {q4-q7}         // save the callee-save registers
  vld1.8 {d0-d1}, [r1]! // load data into v0 (load 16 bytes into d0 and d1)
  vld1.8 {d2-d3}, [r1]! // load data into v1 (load 16 bytes into d2 and d3)
  vld1.8 {d4-d5}, [r1]! // load data into v2 (load 16 bytes into d4 and d5)
  vld1.8 {d6-d7}, [r1]  // load data into v3 (load 16 bytes into d6 and d7)

  aesdpaes v4.16b, v5.16b // perform AES encryption
  vst1.8 {d8-d9