user: 请显示与下面列出的汇编代码相匹配的C语言实现:

```asm
<beta_RSA_padding_check_PKCS1_OAEP_mgf1>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbx
  sub    $0x68,%rsp
  mov    %rdi,-0x80(%rbp)
  mov    %esi,-0x74(%rbp)
  mov    %rdx,-0x68(%rbp)
  mov    %ecx,-0x58(%rbp)
  mov    %r8d,%r12d
  mov    %r9,-0x70(%rbp)
  mov    0x18(%rbp),%rax
  mov    %rax,-0x60(%rbp)
  mov    0x20(%rbp),%rax
  mov    %rax,-0x48(%rbp)
  mov    %fs:0x28,%rax
  mov    %rax,-0x38(%rbp)
  xor    %eax,%eax
  mov    D8(%rip),%rax
  movslq (%rax),%rdx
  lea    0xf(%rdx),%rax
  mov    %rax,%rsi
  and    $0xfffffffffffffff0,%rsi
  and    $0xfffffffffffff000,%rax
  mov    %rsp,%rcx
  sub    %rax,%rcx
L152:
  cmp    %rcx,%rsp
  je     L228
  sub    $0x1000,%rsp
  orq    $0x0,0xff8(%rsp)
  jmp    L152
L228:
  mov    %rsi,%rax
  and    $0xfff,%eax
  sub    %rax,%rsp
  test   %rax,%rax
  je     L25
  orq    $0x0,-0x8(%rsp,%rax,1)
L25:
  mov    %rsp,%r13
  add    $0xf,%rdx
  mov    %rdx,%rcx
  and    $0xfffffffffffffff0,%rcx
  and    $0xfffffffffffff000,%rdx
  mov    %rsp,%rax
  sub    %rdx,%rax
L125:
  cmp    %rax,%rsp
  je     L19
  sub    $0x1000,%rsp
  orq    $0x0,0xff8(%rsp)
  jmp    L125
L19:
  mov    %rcx,%rax
  and    $0xfff,%eax
  sub    %rax,%rsp
  test   %rax,%rax
  je     L237
  orq    $0x0,-0x8(%rsp,%rax,1)
L237:
  mov    %rsp,-0x88(%rbp)
  cmpq   $0x0,-0x60(%rbp)
  jne    L35
  mov    $0x0,%eax
  call   <EVP_sha1@plt>
  mov    %rax,-0x60(%rbp)
L35:
  mov    -0x48(%rbp),%rax
  test   %rax,%rax
  mov    -0x60(%rbp),%rdi
  cmove  %rdi,%rax
  mov    %rax,-0x48(%rbp)
  call   <EVP_MD_size@plt>
  mov    %eax,%ebx
  sub    $0x1,%r12d
  lea    (%rax,%rax,1),%eax
  cmp    %r12d,%eax
  jge    L69
  movl   $0x0,-0x50(%rbp)
  mov    %r12d,%r15d
  sub    -0x58(%rbp),%r15d
  js     L324
L217:
  mov    %r12d,%r14d
  sub    %ebx,%r14d
  lea    (%r12,%r14,1),%edi
  call   <OPENSSL_malloc@plt>
  mov    %rax,%r12
  test   %rax,%rax
  je     L333
  mov    %r14d,-0x4c(%rbp)
  movslq %r14d,%r14
  add    %rax,%r14
  mov    %r15d,%edx
  mov    $0x0,%esi
  mov    %r14,%rdi
  call   <memset@plt>
  movslq %r15d,%rdi
  add    %r14,%rdi
  mov    -0x58(%rbp),%edx
  mov    -0x68(%rbp),%rsi
  call   <memcpy@plt>
  movslq %ebx,%rax
  mov    %rax,-0x58(%rbp)
  lea    (%r14,%rax,1),%r15
  mov    -0x48(%rbp),%r8
  mov    -0x4c(%rbp),%ecx
  mov    %r15,%rdx
  mov    %ebx,%esi
  mov    %r13,%rdi
  call   <beta_PKCS1_MGF1@plt>
  test   %rax,%rax
  jne    L320
  test   %ebx,%ebx
  jle    L252
  mov    %ebx,%ecx
L105:
  movzbl (%r14,%rax,1),%edx
  xor    %dl,0x0(%r13,%rax,1)
  add    $0x1,%rax
  cmp    %rcx,%rax
  jne    L105
L252:
  mov    -0x48(%rbp),%r8
  mov    %ebx,%ecx
  mov    %r13,%rdx
  mov    -0x4c(%rbp),%r14d
  mov    %r14d,%esi
  mov    %r12,%rdi
  call   <beta_PKCS1_MGF1@plt>
  test   %rax,%rax
  jne    L298
  test   %r14d,%r14d
  jle    L272
  mov    %r14d,%ecx
  mov    $0x0,%eax
L286:
  movzbl (%r15,%rax,1),%edx
  xor    %dl,(%r12,%rax,1)
  add    $0x1,%rax
  cmp    %rcx,%rax
  jne    L286
L272:
  mov    $0x0,%r9d
  mov    -0x60(%rbp),%r8
  mov    $0x0,%ecx
  mov    -0x88(%rbp),%r15
  mov    %r15,%rdx
  mov    0x10(%rbp),%esi
  mov    -0x70(%rbp),%rdi
  call   <EVP_Digest@plt>
  test   %eax,%eax
  je     L194
  mov    %ebx,%edx
  mov    %r15,%rsi
  mov    %r12,%rdi
  call   <CRYPTO_memcmp@plt>
  cmpl   $0x0,-0x50(%rbp)
  jne    L156
  test   %rax,%rax
  jne    L156
  mov    -0x4c(%rbp),%edx
  cmp    %edx,%ebx
  jge    L176
  mov    -0x58(%rbp),%rax
  add    %r12,%rax
L268:
  cmpb   $0x0,(%rax)
  jne    L176
  add    $0x1,%ebx
  add    $0x1,%rax
  cmp    %ebx,%edx
  jne    L268
L156:
  mov    %r12,%rdi
  call   <OPENSSL_free@plt>
  mov    $0xffffffff,%r13d
  jmp    L32
L324:
  mov    %r12d,-0x58(%rbp)
  movl   $0x1,-0x50(%rbp)
  mov    $0x0,%r15d
  jmp    L217
L176:
  mov    -0x4c(%rbp),%esi
  cmp    %ebx,%esi
  je     L156
  movslq %ebx,%rax
  cmpb   $0x1,(%r12,%rax,1)
  jne    L156
  add    $0x1,%ebx
  sub    %ebx,%esi
  mov    %esi,%r13d
  cmp    -0x74(%rbp),%esi
  jle    L335
  mov    $0xffffffff,%r13d
L325:
  mov    %r12,%rdi
  call   <OPENSSL_free@plt>
L32:
  mov    -0x38(%rbp),%rax
  sub    %fs:0x28,%rax
  jne    L248
  mov    %r13d,%eax
  lea    -0x28(%rbp),%rsp
  pop    %rbx
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  pop    %rbp
  ret
L335:
  movslq %ebx,%rbx
  lea    (%r12,%rbx,1),%rsi
  mov    %r13d,%edx
  mov    -0x80(%rbp),%rdi
  call   <memcpy@plt>
  jmp    L325
L69:
  mov    $0xffffffff,%r13d
  jmp    L32
L333:
  mov    $0xffffffff,%r13d
  jmp    L32
L320:
  mov    $0xffffffff,%r13d
  jmp    L32
L298:
  mov    $0xffffffff,%r13d
  jmp    L32
L194:
  mov    $0xffffffff,%r13d
  jmp    L32
L248:
  call   <__stack_chk_fail@plt>
```

assistant: ```c
int beta_RSA_padding_check_PKCS1_OAEP_mgf1(unsigned char *to, int tlen, const unsigned char *from, int flen, int num, const unsigned char *param, int plen, const EVP_MD *md, const EVP_MD *mgf1md) {
  int i, dblen, mlen = -1;
  const unsigned char *maskeddb;
  int lzero;
  unsigned char *db = NULL, seed[EVP_MAX_MD_SIZE], phash[EVP_MAX_MD_SIZE];
  unsigned char *padded_from;
  int bad = 0;
  int mdlen;
  if (md == NULL)
    md = EVP_sha1();
  if (mgf1md == NULL)
    mgf1md = md;
  mdlen = EVP_MD_size(md);
  if (--num < 2 * mdlen + 1)
    goto decoding_err;
  lzero = num - flen;
  if (lzero < 0) {
    bad = 1;
    lzero = 0;
    flen = num;
  }
  dblen = num - mdlen;
  db = OPENSSL_malloc(dblen + num);
  if (db == NULL) {
    return -1;
  }
  padded_from = db + dblen;
  memset(padded_from, 0, lzero);
  memcpy(padded_from + lzero, from, flen);
  maskeddb = padded_from + mdlen;
  if (beta_PKCS1_MGF1(seed, mdlen, maskeddb, dblen, mgf1md))
    return -1;
  for (i = 0; i < mdlen; i++)
    seed[i] ^= padded_from[i];
  if (beta_PKCS1_MGF1(db, dblen, seed, mdlen, mgf1md))
    return -1;
  for (i = 0; i < dblen; i++)
    db[i] ^= maskeddb[i];
  if (!EVP_Digest((void *)param, plen, phash, NULL, md, NULL))
    return -1;
  if (CRYPTO_memcmp(db, phash, mdlen) != 0 || bad)
    goto decoding_err;
  else {
    for (i = mdlen; i < dblen; i++)
      if (db[i] != 0x00)
        break;
    if (i == dblen || db[i] != 0x01)
      goto decoding_err;
    else {
      mlen = dblen - ++i;
      if (tlen < mlen) {
        mlen = -1;
      } else
        memcpy(to, db + i, mlen);
    }
  }
  OPENSSL_free(db);
  return mlen;
decoding_err:
  if (db != NULL)
    OPENSSL_free(db);
  return -1;
}
```