hash(password)
for(i=0; i++; i < len(password)
  hash(password.deleteChar(i))

if(hashAndMatch(password)){
  login()
} else {
  for(i=0; i++; i < len(password){
    if(hashAndMatch(password.deleteChar(i))){
      giveFeedBack()
      break;
    }
   }
   error('Wrong password or username')
 }