Re: Re: PRNG: Modules/Testing

I'll have to check those other 4 modules, but still I'm having problems with Math::TrulyRandom. I forced the install of the module, ignoreing make test not working, and when the truly_random_value() sub get's called, that's when it usually hangs, eats cpu, and does nothing.

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Re^3: PRNG: Modules/Testing by adrianh (Chancellor) on Jun 01, 2003 at 23:15 UTC
Works fine on my box (Mac OS X, perl 5.8). I'm afraid I don't have enough XS-fu to offer any advice on getting it running. Might be worth submitting a bug report. May not be what you're looking for anyway... from the C source: /* * WARNING: depending on the particular platform, truerand() output ma +y * be biased or correlated. In general, you can expect about 16 bits +of * "pseudo-entropy" out of each 32 bit word returned by truerand(), * but it may not be uniformly diffused. You should therefore run * the output through some post-whitening function (like MD5 or DES or * whatever) before using it to generate key material. (RSAREF's * random package does this for you when you feed truerand() bits to t +he * seed input function.) * * Test these assumptions on your own platform before fielding a syste +m * based on this software or these techniques. * * This software seems to work well (at 16 bits per truerand() call) o +n * a Sun Sparc-20 under SunOS 4.1.3 and on a P100 under BSDI 2.0. You +'re * on your own elsewhere. */ [download]	[reply] [d/l]

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Re^3: PRNG: Modules/Testing
by adrianh (Chancellor) on Jun 01, 2003 at 23:15 UTC

Works fine on my box (Mac OS X, perl 5.8). I'm afraid I don't have enough XS-fu to offer any advice on getting it running. Might be worth submitting a bug report.

May not be what you're looking for anyway... from the C source:

/*
 * WARNING: depending on the particular platform, truerand() output ma
+y
 * be biased or correlated.  In general, you can expect about 16 bits 
+of
 * "pseudo-entropy" out of each 32 bit word returned by truerand(),
 * but it may not be uniformly diffused.  You should therefore run
 * the output through some post-whitening function (like MD5 or DES or
 * whatever) before using it to generate key material.  (RSAREF's
 * random package does this for you when you feed truerand() bits to t
+he
 * seed input function.)
 *
 * Test these assumptions on your own platform before fielding a syste
+m
 * based on this software or these techniques.
 *
 * This software seems to work well (at 16 bits per truerand() call) o
+n
 * a Sun Sparc-20 under SunOS 4.1.3 and on a P100 under BSDI 2.0.  You
+'re
 * on your own elsewhere.
 */
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