[Cryptech Tech] ent for rosc entropy in the Xilinx FPGA

[Joachim Strömbergson]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

Aloha!

First results using the ent tool on entropy extracted from the rosc
entropy source implemented in the Xilinx Spartan-6 device on the Novena.
this is based on 62 MByte data:


Entropy = 7.999998 bits per byte.

Optimum compression would reduce the size
of this 67121200 byte file by 0 percent.

Chi square distribution for 67121200 samples is 227.52, and randomly
would exceed this value 89.14 percent of the times.

Arithmetic mean value of data bytes is 127.5040 (127.5 = random).
Monte Carlo value for Pi is 3.141248317 (error 0.01 percent).
Serial correlation coefficient is 0.000081 (totally uncorrelated = 0.0).



Not too shabby, it seems to be not totally b0rked.

I'm doing extraktion of more data. And if anybody wants the current raw
data to do further analysis just tell me.

- -- 
Med vänlig hälsning, Yours

Joachim Strömbergson - Alltid i harmonisk svängning.
========================================================================
 Joachim Strömbergson          Secworks AB          joachim at secworks.se
========================================================================
-----BEGIN PGP SIGNATURE-----
Version: GnuPG/MacGPG2 v2
Comment: GPGTools - http://gpgtools.org
Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/

iQIcBAEBCAAGBQJUhg2xAAoJEF3cfFQkIuyN/8sQAIHxstjtV/pedNcL+ABHay+B
XIG4zlsmED/PB9nsxfWx/PgQd0Ac+XRgqWKeH8Ucpw4ezWBJNJtvCTvozMXbMO2Q
hD0uWWsZIYpbuCmPX2ztMRv4hvGBX61Hk12j+cRhSMQIHu1wkPNjt2pq3VJ+Gdf5
/9/rVzHNvv/fhD4iLhJi460WfX+ear7NB0jpU690F0u2aCQaMCIlO6utarbow2j2
r1gmTGxhEDxZso+LseYjo+KJyuozBtaAa2d2DDdDUSZ5EqVV5WKnrFFRWUM2a9bv
2s+rGv4MCRMiN2a1wv67Ftu16Ep2z907xOBGmchB2gySttv+Sq7h08VGtqRIiS1D
e3ZPRzKv1VH0JN4Y3aNpERvJhfm5dZCkEVGsMyKzgbebvo1E/TLSxl1zhU48y7nH
bz85dyiDC+Uzjfu91uMyVVvo8q6UaAbVAsmCAgNxzKwqKVc/YWJqibjCRI3RNUA2
pEEp1zZSNwYegcXgvIi5ZDnaAcBL9iei0dpOv6WX3VS9Nygh6UlQqO8c70P6z2cw
RjSupEuw9qMkuv8rGsqxyzkMO0xEpi/bZPnuVoCT4165APgsPvCCEZIVrRIy/1iy
MMqg9LLBsbePQz1tk19Fnvrpfl6ONbyzqt6pmDVKhhl4TN06Svkhj+5nNbyo86xJ
8n8ST1oZzPpkbtvbBHEG
=8FSa
-----END PGP SIGNATURE-----