Real random number generator

[tepez]

I need to use randomness in my application in I'm not use that the pseudo-random rand() function will be random enough.

Where can I find a real random generator?

[laitinen]

CTrueRandom - Getting True Random Numbers

Laitinen

[kandukondein]

Please refer X9.31 PRNG which is a true Pseudo Random Number Generator which takes into consideration all entropies. One possible place to refer it would be the Openssl implementation.

Thanks.

[MikeAThon]

If all you need is a better pseudo-random number generator (you're correct that the built-in rand() function is not that good), then Google for Mersenne Twister and you will get literally thousands of hits. Here's one: "Mersenne Twister Random Number Generator" at http://www-personal.engin.umich.edu/...neTwister.html

Here's another: "Pseudo random number generators" at http://www.agner.org/random/

Both include source code and a discussion of results/performance.

If you need a "true" random number generator, then this implies that there is a source of true entropy. See the "True Random Number Generator" section in this Wikipedia article: "List of random number generators" at http://en.wikipedia.org/wiki/List_of...ber_generators

Mike

[cilu]

Point is, only with software, you can only get pseudo-number generators. Computers are deterministic and so is the software. If you want true random numbers you must use a hardware device to generate them.

My question is: what kind of application do you have that requires random numbers?