Comments on: Random numbers – a .Net function to return a random number http://cgaskell.wordpress.com/2006/12/05/random-numbers-a-function-to-return-a-random-number/ My notes on computer hardware, application development & the odd extra Wed, 09 Dec 2009 09:13:26 +0000 http://wordpress.com/ hourly 1 By: Terry Cornwell http://cgaskell.wordpress.com/2006/12/05/random-numbers-a-function-to-return-a-random-number/#comment-353 Terry Cornwell Wed, 07 Feb 2007 16:18:07 +0000 http://cgaskell.wordpress.com/2006/12/05/random-numbers-a-function-to-return-a-random-number/#comment-353 Add this to last post DUH..... // Now, this is real randomization. Random random = new Random(seed); Add this to last post DUH…..

// Now, this is real randomization.
Random random = new Random(seed);

]]> By: Terry Cornwell http://cgaskell.wordpress.com/2006/12/05/random-numbers-a-function-to-return-a-random-number/#comment-352 Terry Cornwell Wed, 07 Feb 2007 16:15:02 +0000 http://cgaskell.wordpress.com/2006/12/05/random-numbers-a-function-to-return-a-random-number/#comment-352 ^ see above, also, in a recent implementation I needed to generate a random string for a password (a dictionary would of been so much better). After a while I noticed just how non-random my random passwords were. So, I went with this // Create a random seed byte[] randomBytes = new byte[4]; RNGCryptoServiceProvider rng = new RNGCryptoServiceProvider(); rng.GetBytes(randomBytes); // Convert 4 bytes into a 32-bit integer value. seed = (randomBytes[0] & 0x7f) ^ see above, also, in a recent implementation I needed to generate a random string for a password (a dictionary would of been so much better). After a while I noticed just how non-random my random passwords were. So, I went with this

// Create a random seed
byte[] randomBytes = new byte[4];
RNGCryptoServiceProvider rng = new RNGCryptoServiceProvider();
rng.GetBytes(randomBytes);

// Convert 4 bytes into a 32-bit integer value.
seed = (randomBytes[0] & 0×7f)

]]> By: Phil Winstanley http://cgaskell.wordpress.com/2006/12/05/random-numbers-a-function-to-return-a-random-number/#comment-44 Phil Winstanley Tue, 05 Dec 2006 21:55:54 +0000 http://cgaskell.wordpress.com/2006/12/05/random-numbers-a-function-to-return-a-random-number/#comment-44 Check out this article, it covers why Random() isn't very Random() :-) http://www.codinghorror.com/blog/archives/000728.html Check out this article, it covers why Random() isn’t very Random() :-)

http://www.codinghorror.com/blog/archives/000728.html

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