user: What is the c source code of the assembly code below:

```asm
<crypto_aead_decrypt>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x130,%rsp
  mov    %rdi,-0xf8(%rbp)
  mov    %rsi,-0x100(%rbp)
  mov    %rdx,-0x108(%rbp)
  mov    %rcx,-0x110(%rbp)
  mov    %r8,-0x118(%rbp)
  mov    %r9,-0x120(%rbp)
  mov    0x18(%rbp),%rax
  mov    %rax,-0x128(%rbp)
  mov    0x20(%rbp),%rax
  mov    %rax,-0x130(%rbp)
  mov    %fs:0x28,%rax
  mov    %rax,-0x8(%rbp)
  xor    %eax,%eax
  movl   $0x0,-0xec(%rbp)
  lea    -0xe0(%rbp),%rdx
  mov    -0x128(%rbp),%rcx
  mov    -0x130(%rbp),%rax
  mov    %rcx,%rsi
  mov    %rax,%rdi
  call   <morus_initialization@plt>
  movq   $0x0,-0xe8(%rbp)
  jmp    L11
L33:
  mov    -0x120(%rbp),%rdx
  mov    -0xe8(%rbp),%rax
  lea    (%rdx,%rax,1),%rcx
  lea    -0xe0(%rbp),%rdx
  lea    -0x90(%rbp),%rax
  mov    %rax,%rsi
  mov    %rcx,%rdi
  call   <morus_enc_aut_step@plt>
  addq   $0x20,-0xe8(%rbp)
L11:
  mov    -0xe8(%rbp),%rax
  add    $0x20,%rax
  cmp    %rax,0x10(%rbp)
  jae    L33
  mov    0x10(%rbp),%rax
  and    $0x1f,%eax
  test   %rax,%rax
  je     L52
  mov    0x10(%rbp),%rax
  and    $0x1f,%eax
  mov    %rax,%rsi
  mov    -0x120(%rbp),%rdx
  mov    -0xe8(%rbp),%rax
  lea    (%rdx,%rax,1),%rdi
  lea    -0xe0(%rbp),%rdx
  lea    -0x90(%rbp),%rax
  mov    %rdx,%rcx
  mov    %rsi,%rdx
  mov    %rax,%rsi
  call   <morus_enc_aut_partialblock@plt>
L52:
  mov    -0x118(%rbp),%rax
  lea    -0x10(%rax),%rdx
  mov    -0x100(%rbp),%rax
  mov    %rdx,(%rax)
  movq   $0x0,-0xe8(%rbp)
  jmp    L0
L14:
  mov    -0x110(%rbp),%rdx
  mov    -0xe8(%rbp),%rax
  lea    (%rdx,%rax,1),%rsi
  mov    -0xf8(%rbp),%rdx
  mov    -0xe8(%rbp),%rax
  lea    (%rdx,%rax,1),%rcx
  lea    -0xe0(%rbp),%rax
  mov    %rax,%rdx
  mov    %rcx,%rdi
  call   <morus_dec_aut_step@plt>
  addq   $0x20,-0xe8(%rbp)
L0:
  mov    -0xe8(%rbp),%rax
  lea    0x20(%rax),%rdx
  mov    -0x100(%rbp),%rax
  mov    (%rax),%rax
  cmp    %rax,%rdx
  jbe    L14
  mov    -0x100(%rbp),%rax
  mov    (%rax),%rax
  and    $0x1f,%eax
  test   %rax,%rax
  je     L20
  mov    -0x100(%rbp),%rax
  mov    (%rax),%rax
  and    $0x1f,%eax
  mov    %rax,%rdx
  mov    -0x110(%rbp),%rcx
  mov    -0xe8(%rbp),%rax
  lea    (%rcx,%rax,1),%rsi
  mov    -0xf8(%rbp),%rcx
  mov    -0xe8(%rbp),%rax
  lea    (%rcx,%rax,1),%rdi
  lea    -0xe0(%rbp),%rax
  mov    %rax,%rcx
  call   <morus_dec_aut_partialblock@plt>
L20:
  mov    -0x100(%rbp),%rax
  mov    (%rax),%rax
  lea    -0xe0(%rbp),%rcx
  mov    -0x110(%rbp),%rdx
  mov    0x10(%rbp),%rsi
  mov    %rax,%rdi
  call   <morus_tag_verification@plt>
  mov    -0x8(%rbp),%rdx
  sub    %fs:0x28,%rdx
  je     L6
  call   <__stack_chk_fail@plt>
L6:
  leave
  ret
```

assistant: ```c
int crypto_aead_decrypt(unsigned char *m, unsigned long long *mlen, unsigned char *nsec, const unsigned char *c, unsigned long long clen, const unsigned char *ad, unsigned long long adlen, const unsigned char *npub, const unsigned char *k) {
  unsigned long i, j;
  uint8_t plaintextblock[32], ciphertextblock[32];
  uint8_t tag[16];
  uint8_t check = 0;
  uint64_t morus_state[5][4];
  morus_initialization(k, npub, morus_state);
  for (i = 0; (i + 32) <= adlen; i += 32) {
    morus_enc_aut_step(ad + i, ciphertextblock, morus_state);
  }
  if ((adlen & 0x1f) != 0) {
    morus_enc_aut_partialblock(ad + i, ciphertextblock, adlen & 0x1f, morus_state);
  }
  *mlen = clen - 16;
  for (i = 0; (i + 32) <= *mlen; i += 32) {
    morus_dec_aut_step(m + i, c + i, morus_state);
  }
  if ((*mlen & 0x1f) != 0) {
    morus_dec_aut_partialblock(m + i, c + i, *mlen & 0x1f, morus_state);
  }
  return morus_tag_verification(*mlen, adlen, c, morus_state);
}
```