In message <20180430.152609.587396153749337701.levi...@openssl.org> on Mon, 30
Apr 2018 15:26:09 +0200 (CEST), Richard Levitte <levi...@openssl.org> said:
levitte> In message <20180430131000.ga25...@roeckx.be> on Mon, 30 Apr 2018
15:10:01 +0200, Kurt Roeckx <k...@roeckx.be> said:
levitte>
levitte> kurt> The comment about not hashing it is if you want to use the tool
to
levitte> kurt> do entropy estimation. Hashing it will not increase the entropy,
levitte> kurt> but the estimation will be totally wrong.
levitte> kurt>
levitte> kurt> Passing the hashed data to the drbg as entropy input is fine if
levitte> kurt> you already know how much entropy that it contains.
levitte>
levitte> Thanks, that's what I suspected. Ok, on to the next step
Not done running, but does show some promise...
: ; ./a.out
../../../levitte/vms-experiments/entropy-gathering/entropy-stats.bin 8 -v
Opening file:
../../../levitte/vms-experiments/entropy-gathering/entropy-stats.bin
Running non-IID tests...
Entropic statistic estimates:
Most Common Value Estimate = 0.975224
Collision Test Estimate = 0.902997
Markov Test Estimate = 0.410808
Compression Test Estimate = 0.811274
I assume that estimate is per "word" (i.e. per 8 bits of data in this
case).
--
Richard Levitte levi...@openssl.org
OpenSSL Project http://www.openssl.org/~levitte/
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