Function check_scramble_323

sql/password.c:205–238

*/

my_bool
check_scramble_323(const unsigned char *scrambled, const char *message,
                   ulong *hash_pass)
{
  struct rand_struct rand_st;
  ulong hash_message[2];
  /* Big enough for checks. */
  uchar buff[16], scrambled_buff[SCRAMBLE_LENGTH_323 + 1];
  uchar *to, extra;
  const uchar *pos;

  /* Ensure that the scrambled message is null-terminated. */
  memcpy(scrambled_buff, scrambled, SCRAMBLE_LENGTH_323);
  scrambled_buff[SCRAMBLE_LENGTH_323]= '\0';
  scrambled= scrambled_buff;

  hash_password(hash_message, message, SCRAMBLE_LENGTH_323);
  randominit(&rand_st,hash_pass[0] ^ hash_message[0],
             hash_pass[1] ^ hash_message[1]);
  to=buff;
  DBUG_ASSERT(sizeof(buff) > SCRAMBLE_LENGTH_323);
  for (pos=scrambled ; *pos && to < buff+sizeof(buff) ; pos++)
    *to++=(char) (floor(my_rnd(&rand_st)*31)+64);
  if (pos-scrambled != SCRAMBLE_LENGTH_323)
    return 1;
  extra=(char) (floor(my_rnd(&rand_st)*31));
  to=buff;
  while (*scrambled)
  {
    if (*scrambled++ != (uchar) (*to++ ^ extra))
      return 1;                                 /* Wrong password */
  }
  return 0;
}

static inline uint8 char_val(uint8 X)
{