user: 请从给定的汇编指令推导出C源代码：

```asm
<Decrypt>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x70,%rsp
  mov    %rdi,-0x68(%rbp)
  mov    %rsi,-0x70(%rbp)
  mov    %fs:0x28,%rax
  mov    %rax,-0x8(%rbp)
  xor    %eax,%eax
  movl   $0x0,-0x58(%rbp)
  jmp    L55
L11:
  mov    -0x58(%rbp),%eax
  and    $0x1,%eax
  test   %eax,%eax
  je     L94
  mov    -0x58(%rbp),%eax
  sar    %eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x68(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%edx
  mov    -0x58(%rbp),%eax
  lea    0x3(%rax),%ecx
  test   %eax,%eax
  cmovs  %ecx,%eax
  sar    $0x2,%eax
  mov    %eax,%esi
  mov    -0x58(%rbp),%eax
  mov    %eax,%ecx
  sar    $0x1f,%ecx
  shr    $0x1e,%ecx
  add    %ecx,%eax
  and    $0x3,%eax
  sub    %ecx,%eax
  and    $0xf,%edx
  movslq %eax,%rcx
  movslq %esi,%rax
  shl    $0x2,%rax
  add    %rcx,%rax
  mov    %edx,-0x50(%rbp,%rax,4)
  jmp    L8
L94:
  mov    -0x58(%rbp),%eax
  sar    %eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x68(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%eax
  sar    $0x4,%eax
  mov    %eax,%ecx
  mov    -0x58(%rbp),%eax
  lea    0x3(%rax),%edx
  test   %eax,%eax
  cmovs  %edx,%eax
  sar    $0x2,%eax
  mov    %eax,%esi
  mov    -0x58(%rbp),%eax
  cltd
  shr    $0x1e,%edx
  add    %edx,%eax
  and    $0x3,%eax
  sub    %edx,%eax
  and    $0xf,%ecx
  mov    %ecx,%edx
  movslq %eax,%rcx
  movslq %esi,%rax
  shl    $0x2,%rax
  add    %rcx,%rax
  mov    %edx,-0x50(%rbp,%rax,4)
L8:
  addl   $0x1,-0x58(%rbp)
L55:
  cmpl   $0xf,-0x58(%rbp)
  jle    L11
  movl   $0xb,-0x58(%rbp)
  jmp    L40
L35:
  mov    -0x58(%rbp),%eax
  lea    0x1(%rax),%edx
  mov    -0x70(%rbp),%rcx
  lea    -0x50(%rbp),%rax
  mov    %rcx,%rsi
  mov    %rax,%rdi
  call   <AddKey@plt>
  movl   $0x3,-0x54(%rbp)
  jmp    L25
L13:
  lea    -0x50(%rbp),%rax
  mov    %rax,%rdi
  call   <invSCShRMCS@plt>
  mov    -0x58(%rbp),%eax
  lea    0x0(,%rax,4),%edx
  mov    -0x54(%rbp),%eax
  add    %eax,%edx
  lea    -0x50(%rbp),%rax
  mov    %edx,%esi
  mov    %rax,%rdi
  call   <AddConstants@plt>
  subl   $0x1,-0x54(%rbp)
L25:
  cmpl   $0x0,-0x54(%rbp)
  jns    L13
  subl   $0x1,-0x58(%rbp)
L40:
  cmpl   $0x0,-0x58(%rbp)
  jns    L35
  mov    -0x70(%rbp),%rcx
  lea    -0x50(%rbp),%rax
  mov    $0x0,%edx
  mov    %rcx,%rsi
  mov    %rax,%rdi
  call   <AddKey@plt>
  movl   $0x0,-0x58(%rbp)
  jmp    L106
L72:
  mov    -0x58(%rbp),%eax
  mov    %eax,%edx
  shr    $0x1f,%edx
  add    %edx,%eax
  sar    %eax
  mov    %eax,%ecx
  mov    -0x58(%rbp),%eax
  add    %eax,%eax
  cltd
  shr    $0x1e,%edx
  add    %edx,%eax
  and    $0x3,%eax
  sub    %edx,%eax
  movslq %eax,%rdx
  movslq %ecx,%rax
  shl    $0x2,%rax
  add    %rdx,%rax
  mov    -0x50(%rbp,%rax,4),%eax
  shl    $0x4,%eax
  movzbl %al,%ecx
  mov    -0x58(%rbp),%eax
  add    %eax,%eax
  add    $0x1,%eax
  lea    0x3(%rax),%edx
  test   %eax,%eax
  cmovs  %edx,%eax
  sar    $0x2,%eax
  mov    %eax,%esi
  mov    -0x58(%rbp),%eax
  add    %eax,%eax
  add    $0x1,%eax
  cltd
  shr    $0x1e,%edx
  add    %edx,%eax
  and    $0x3,%eax
  sub    %edx,%eax
  movslq %eax,%rdx
  movslq %esi,%rax
  shl    $0x2,%rax
  add    %rdx,%rax
  mov    -0x50(%rbp,%rax,4),%eax
  and    $0xf,%eax
  mov    %eax,%edx
  mov    -0x58(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rsi
  mov    -0x68(%rbp),%rax
  add    %rsi,%rax
  or     %ecx,%edx
  mov    %edx,(%rax)
  addl   $0x1,-0x58(%rbp)
L106:
  cmpl   $0x7,-0x58(%rbp)
  jle    L72
  nop
  mov    -0x8(%rbp),%rax
  sub    %fs:0x28,%rax
  je     L77
  call   <__stack_chk_fail@plt>
L77:
  leave
  ret
```

assistant: ```c
void Decrypt(uint8_t *block, uint8_t *keyBytes) {
  int8_t i, j;
  uint8_t state[4][4];
  for (i = 0; i < 16; i++) {
    if (i % 2) {
      state[i / 4][i % 4] = block[i >> 1] & 0xF;
    } else {
      state[i / 4][i % 4] = (block[i >> 1] >> 4) & 0xF;
    }
  }
  for (i = (48 >> 2) - 1; i >= 0; i--) {
    AddKey(state, keyBytes, i + 1);
    for (j = 3; j >= 0; j--) {
      invSCShRMCS(state);
      AddConstants(state, i * 4 + j);
    }
  }
  AddKey(state, keyBytes, 0);
  for (i = 0; i < 8; i++) {
    block[i] = ((state[(2 * i) / 4][(2 * i) % 4] & 0xF) << 4) | (state[(2 * i + 1) / 4][(2 * i + 1) % 4] & 0xF);
  }
}
```