user: 这段汇编代码用C语言表示是什么样的:

```asm
<challenge11>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x28,%rsp
  mov    %rdi,%rbx
  mov    %rdi,0x8(%rsp)
  mov    %fs:0x28,%rax
  mov    %rax,0x18(%rsp)
  xor    %eax,%eax
  lea    D14(%rip),%rdi
  call   <puts@plt>
  mov    $0x0,%edi
  call   <time@plt>
  mov    %eax,%edi
  call   <srand@plt>
  mov    %rbx,%rdi
  call   <strlen@plt>
  mov    %eax,0x4(%rsp)
  mov    $0x64,%ebp
  mov    $0x0,%r12d
  mov    $0x0,%r13d
  mov    $0x0,%r14d
  lea    0x10(%rsp),%r15
  jmp    L22
L34:
  add    $0x1,%r13d
L29:
  cmp    %eax,%edx
  sete   %al
  movzbl %al,%eax
  add    %eax,%r12d
  mov    %rbx,%rdi
  call   <free@plt>
  sub    $0x1,%ebp
  je     L6
L22:
  lea    0x14(%rsp),%rdx
  mov    %r15,%rcx
  mov    0x4(%rsp),%esi
  mov    0x8(%rsp),%rdi
  call   <encryption_oracle@plt>
  mov    %rax,%rbx
  mov    0x10(%rsp),%esi
  mov    %rax,%rdi
  call   <detect_mode@plt>
  mov    0x14(%rsp),%edx
  test   %edx,%edx
  jne    L34
  add    $0x1,%r14d
  jmp    L29
L6:
  pxor   %xmm0,%xmm0
  cvtsi2ss %r14d,%xmm0
  mulss  D4(%rip),%xmm0
  divss  D4(%rip),%xmm0
  cvtss2sd %xmm0,%xmm0
  lea    D31(%rip),%rdi
  mov    $0x1,%eax
  call   <printf@plt>
  pxor   %xmm0,%xmm0
  cvtsi2ss %r13d,%xmm0
  mulss  D4(%rip),%xmm0
  divss  D4(%rip),%xmm0
  cvtss2sd %xmm0,%xmm0
  lea    D99(%rip),%rdi
  mov    $0x1,%eax
  call   <printf@plt>
  pxor   %xmm0,%xmm0
  cvtsi2ss %r12d,%xmm0
  mulss  D4(%rip),%xmm0
  divss  D4(%rip),%xmm0
  cvtss2sd %xmm0,%xmm0
  lea    D28(%rip),%rdi
  mov    $0x1,%eax
  call   <printf@plt>
  mov    0x18(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L14
  add    $0x28,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L14:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: retrieve_data
arguments: tag: D14
type_guessed: string
name: retrieve_data
arguments: tag: D4
type_guessed: byte[4]
name: retrieve_data
arguments: tag: D31
type_guessed: string
name: retrieve_data
arguments: tag: D99
type_guessed: string
name: retrieve_data
arguments: tag: D28
type_guessed: string

tool: D14: *** Challenge 11: An ECB/CBC detection oracle

tool: {"D4": [0x00,0x00,0xc8,0x42]}

tool: D31: ECB encryption rate: %.0f%%


tool: D99: CBC encryption rate: %.0f%%


tool: D28: Detection success rate: %.0f%%


assistant: ```c
void challenge11(char *str) {
  uint8_t *enc;
  int out_len;
  int real;
  int detected;
  int num_ecb;
  int num_cbc;
  int successes;
  int len;
  int i;
  float percentage;
  printf("*** Challenge 11: An ECB/CBC detection oracle\n");
  srand(time(NULL));
  len = strlen(str);
  successes = 0;
  num_ecb = 0;
  num_cbc = 0;
  for (i = 0; i < 100; i++) {
    enc = encryption_oracle((uint8_t *)str, len, &real, &out_len);
    detected = detect_mode(enc, out_len);
    if (real == 0)
      num_ecb++;
    else
      num_cbc++;
    if (real == detected)
      successes++;
    free(enc);
  }
  percentage = 100 * (float)num_ecb / 100;
  printf("ECB encryption rate: %.0f%%\n", percentage);
  percentage = 100 * (float)num_cbc / 100;
  printf("CBC encryption rate: %.0f%%\n", percentage);
  percentage = 100 * (float)successes / 100;
  printf("Detection success rate: %.0f%%\n", percentage);
}
```