user: What would the C source look like for the assembly code provided here:

```asm
<string_to_key>:
  endbr64
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x10,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x8(%rsp)
  xor    %eax,%eax
  call   <Getc@plt>
  mov    %rax,%rbx
  mov    %eax,%r12d
  mov    $0x0,%eax
  call   <Getc@plt>
  cmp    $0x2,%ebx
  je     L149
  mov    %eax,%ebp
  jle    L82
  cmp    $0x3,%ebx
  je     L66
  cmp    $0x65,%ebx
  jne    L89
  lea    0x4(%rsp),%rbx
  lea    0x8(%rsp),%rbp
L187:
  mov    $0x0,%eax
  call   <Getc@plt>
  mov    %al,(%rbx)
  add    $0x1,%rbx
  cmp    %rbp,%rbx
  jne    L187
  lea    0x4(%rsp),%rdi
  mov    $0x3,%edx
  lea    D103(%rip),%rsi
  call   <memcmp@plt>
  test   %eax,%eax
  jne    L24
  movsbl 0x7(%rsp),%eax
  lea    0x3e8(%rax),%esi
  cmp    $0x1,%eax
  je     L62
  cmp    $0x3ea,%esi
  je     L131
  lea    D88(%rip),%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  jmp    L148
L82:
  test   %ebx,%ebx
  je     L91
  cmp    $0x1,%ebx
  jne    L89
  mov    $0x1,%esi
  lea    D50(%rip),%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    $0x9,%edi
  call   <putchar@plt>
  mov    %ebp,%edi
  call   <hash_algs@plt>
  lea    D126(%rip),%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    $0x8,%edi
  call   <dump@plt>
  mov    $0xa,%edi
  call   <putchar@plt>
  jmp    L159
L91:
  mov    $0x0,%esi
  lea    D41(%rip),%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    $0x9,%edi
  call   <putchar@plt>
  mov    %ebp,%edi
  call   <hash_algs@plt>
  mov    $0x1,%r12d
  jmp    L159
L149:
  mov    $0x2,%esi
  lea    D4(%rip),%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    $0x1,%r12d
  jmp    L159
L66:
  mov    $0x3,%esi
  lea    D84(%rip),%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    $0x9,%edi
  call   <putchar@plt>
  mov    %ebp,%edi
  call   <hash_algs@plt>
  lea    D126(%rip),%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    $0x8,%edi
  call   <dump@plt>
  mov    $0xa,%edi
  call   <putchar@plt>
  mov    $0x0,%eax
  call   <Getc@plt>
  mov    %eax,%edx
  mov    %eax,%esi
  and    $0xf,%esi
  add    $0x10,%esi
  sar    $0x4,%eax
  lea    0x6(%rax),%ecx
  shl    %cl,%esi
  lea    D89(%rip),%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    $0x1,%r12d
  jmp    L159
L62:
  mov    $0x3e9,%esi
  lea    D75(%rip),%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  jmp    L148
L131:
  mov    $0x0,%eax
  call   <Getc@plt>
  mov    %rax,%rbx
  mov    $0x3ea,%esi
  lea    D74(%rip),%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    %ebx,%edi
  call   <dump@plt>
  lea    D23(%rip),%rdi
  call   <puts@plt>
  jmp    L148
L24:
  mov    $0x65,%esi
  lea    D124(%rip),%rdi
  mov    $0x0,%eax
  call   <printf@plt>
L148:
  mov    $0x0,%r12d
L159:
  mov    0x8(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L50
  mov    %r12d,%eax
  add    $0x10,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  ret
L89:
  mov    %r12d,%esi
  lea    D14(%rip),%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    $0x1,%r12d
  jmp    L159
L50:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: unpack_data
arguments: data_tag: D103
datatype: string
name: unpack_data
arguments: data_tag: D88
datatype: string
name: unpack_data
arguments: data_tag: D50
datatype: string
name: unpack_data
arguments: data_tag: D126
datatype: string
name: unpack_data
arguments: data_tag: D41
datatype: string
name: unpack_data
arguments: data_tag: D4
datatype: string
name: unpack_data
arguments: data_tag: D84
datatype: string
name: unpack_data
arguments: data_tag: D89
datatype: string
name: unpack_data
arguments: data_tag: D75
datatype: string
name: unpack_data
arguments: data_tag: D74
datatype: string
name: unpack_data
arguments: data_tag: D23
datatype: string
name: unpack_data
arguments: data_tag: D124
datatype: string
name: unpack_data
arguments: data_tag: D14
datatype: string

tool: D103: GNU

tool: D88: 	GnuPG unknown extension (s2k %d)


tool: D50: 	Salted string-to-key(s2k %d):


tool: D126: 		Salt - 

tool: D41: 	Simple string-to-key(s2k %d):


tool: D4: 	Reserved string-to-key(s2k %d)


tool: D84: 	Iterated and salted string-to-key(s2k %d):


tool: D89: 		Count - %d(coded count %d)


tool: D75: 	GnuPG gnu-dummy (s2k %d)


tool: D74: 	GnuPG gnu-divert-to-card (s2k %d)
	Serial Number: 

tool: 

tool: D124: 	Private/experimental string-to-key(s2k %d)


tool: D14: 	Unknown string-to-key(s2k %d)


assistant: ```c
extern int string_to_key(void) {
  int has_iv = 1;
  int type = Getc();
  int hash = Getc();
  switch (type) {
  case 0:
    printf("\tSimple string-to-key(s2k %d):\n", type);
    printf("\t");
    hash_algs(hash);
    break;
  case 1:
    printf("\tSalted string-to-key(s2k %d):\n", type);
    printf("\t");
    hash_algs(hash);
    printf("\t\tSalt - ");
    dump(8);
    printf("\n");
    break;
  case 2:
    printf("\tReserved string-to-key(s2k %d)\n", type);
    break;
  case 3:
    printf("\tIterated and salted string-to-key(s2k %d):\n", type);
    printf("\t");
    hash_algs(hash);
    printf("\t\tSalt - ");
    dump(8);
    printf("\n");
    {
      int count, c = Getc();
      count = (16 + (c & 15)) << ((c >> 4) + 6);
      printf("\t\tCount - %d(coded count %d)\n", count, c);
    }
    break;
  case 101:
    has_iv = 0;
    {
      char temp[4];
      int j, snlen;
      for (j = 0; j < 4; j++)
        temp[j] = Getc();
      if (!memcmp(temp, "GNU", 3)) {
        type = 1000 + temp[3];
        switch (type) {
        case 1001:
          printf("\tGnuPG gnu-dummy (s2k %d)\n", type);
          break;
        case 1002:
          snlen = Getc();
          printf("\tGnuPG gnu-divert-to-card (s2k %d)\n\tSerial Number: ", type);
          dump(snlen);
          puts("");
          break;
        default:
          printf("\tGnuPG unknown extension (s2k %d)\n", type);
          break;
        }
      } else {
        printf("\tPrivate/experimental string-to-key(s2k %d)\n", type);
      }
    }
    break;
  default:
    printf("\tUnknown string-to-key(s2k %d)\n", type);
  }
  return has_iv;
}
```