## Rainbow Table and srand (), i need help please.

Ok, I am playing a game and let say that i want to upgrade my gear by linking items in it. The items give you a 22% linking chance. I know that in order to link i need numbers lower than 22000/100000. I know that anything under 22000 can be linked. In order to know at what time i can get a number under 22000 i need to use a rainbow table to get a timeframe and put it in the srand(). This is a guy trying to explain me how to do it, but since i do not know anything about the Rainbow table i cannot manage to do it.

tell him this: srand(time) % 10000, you need the results of that mapped out into a rainbow table

for a timeframe

you used this

Code:
```#include <stdlib.h>
#include <stdio.h>
#include <time.h>

int main(void)
{
int i;
time_t t;

srand((unsigned) time(&t));

for(i=0; i<10; i++)
printf("%d\n", rand() % 100);
return 0;
}```
but you're thinking about it the wrong way
you will never be accurate enough trying it like that
You just want to output the results of srand()

Timestamp is just a really long number
and it's sequential

so, you can.... predict what... 12/2/2011 11:32:10 PM would be
exactly.
in a timestamp format

Now, if XXX game's RNG runs off the timestamp of the current time...
you can predict what it will generate
at 12/2/2011 11:32:10 PM
in the future.

So, a rainbow table just basically lists "all" the possible outcomes. I do 7 hours worth of times in my rainbow tables

Then I look for groups of time periods where linking % is high

because you just can't get accurate enough to know what exact server time is + the lag

So, you want to feed srand() with future times and map them out into a spreadsheet (excel or something)

Just small periods of time, then look at allllll the numbers under 22,000

because those are the ones that will link.
Or %%,000. whatever % it is

22,000 = 22%, etc.

and make a table with srand() outputs

then try to find a big group of low numbers

You want about... 2-3 seconds where 80% of the numbers are under your desired linking %. It's not hard to find if you have the output in front of you

Here are steps
1) pick day you want to link
2) find a 10-20 minute time period, predict their unix timestamps (just calculate, google it )
3) feed all those unix timestamps into srand() in order
4) save srand's output into CSV or some kind of output you can read
11:28pm
5) evaluate for 2-3 seconds of low numbers