Java: MATH.random exploit

[Nemo_Sum]

I'm new to Java and object oriented programming in general, so I may have bitten off a bit more than I can chew with my current project. I was wondering what you all knew about the MATH.random method. I'm assuming it uses a seed, but I can't find the approximate length of the seeds, or any other details that might be vaguely helpful really. Basically, the program I'm working on simulates a dice roll using MATH.random, but I'd like to hack my program and see if I'm able to predict the outcome of the dice roll before it happens. Ultimately, I'm wondering what security flaws are presented specifically by using MATH.random to generate my rolls. If you have any insights or can direct me to any information that might be useful, I'd really appreciate the help.

[centip3de]

I'm new to Java and object oriented programming in general, so I may have bitten off a bit more than I can chew with my current project. I was wondering what you all knew about the MATH.random method. I'm assuming it uses a seed, but I can't find the approximate length of the seeds, or any other details that might be vaguely helpful really. Basically, the program I'm working on simulates a dice roll using MATH.random, but I'd like to hack my program and see if I'm able to predict the outcome of the dice roll before it happens. Ultimately, I'm wondering what security flaws are presented specifically by using MATH.random to generate my rolls. If you have any insights or can direct me to any information that might be useful, I'd really appreciate the help.

Here's the API documentation, goes pretty in depth. Also, the seed that random functions usually use is either the system time, or the number of current cycles of the CPU since a certain date (similar to the system time), but generally they use a seed that is constantly changing, or else you'd never have random... But anyway, I suppose if you were able to edit the system time (or, find out the future cycles), you could feasibly figure this out, but it seems to be a bit too much trouble than it's worth. Seems like a cool project though.

[Nemo_Sum]

Thanks! That's great information. And sounds like a lot of fun. I think I'll play around with that idea and see what I can do. Like you said, it's probably more trouble than it's worth for anyone from the outside trying to exploit the system, but this sounds like a great personal project.