I want to create an online roulette game.
Is it OK if the PRNG is seeded only once, when the user starts the game?
Or is it recommended to re-seed sometimes during game?
Maybe just seeded once a day on the server and every players would get a next random number without re-seeding?
How would you do? How do they do it at online casinos?
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Hans Kesting
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Gergely Bertalan
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I'd say it depends on the quality of your seeds. Seeding every day with numbers from another PRNG doesn't make much sense imho, but TRNG seeds might make sense. On a different note, there is [the Crypto SE](http://crypto.stackexchange.com/), you might get quality answers there. – Janis F Dec 18 '13 at 12:00
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(Thanks for the link.) I can seed it with large numbers requested from a website, quite good quality, not TRNG, but better then the result of a normal rand() function. – Gergely Bertalan Dec 18 '13 at 12:50