-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 Aloha!
Benny Baumann wrote: > OT: Has an entropy source like WhirlyGig[1] or some FPGA port of > it[2] been considered as an additional entropy source? Having > experimented with that code on some Papillio Pro board a while ago I > found the general design to provide good results with dieharder when > sending samples at 2Mbps. The bit stream could easily be scaled to > provide 1Gbps; although I didn't try this due to lack of means to > transfer data fast enough (The WhirlyGig core runs easily at 100MHz > on the Papillio Pro). I've looked at Whirlygig. It is basically a number of free running digital oscillators (inverters) that are sampled. This is how the rosc entropy source in the Cryptech RNG works. Designed by Bernd Paysan. The rosc contains 32 separate free running digital oscillators that are sampled and XOR-combined every 256 cycles. Note that we second entropy source based on avalanche noise in a PN junction. Designed by Fredrik Thulin. - -- Med vänlig hälsning, Yours Joachim Strömbergson - Assured AB ======================================================================== -----BEGIN PGP SIGNATURE----- Comment: GPGTools - http://gpgtools.org Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iQIcBAEBCAAGBQJauk8HAAoJEF3cfFQkIuyN1QkQAIAI5dHa2sDUVjZktSt97qoV yYKd2zmmGBDws0r0gQEepeekOOsNVcEia22N3iowMXtBActVPsA2/badePHznWOC 2xr/qzzY4mbJ+zDP9jR31IvRCBFzUEJFp+VYUTRX52p+DHgKFdZ5ATcg/iRVTM5V rdPzhNTRNp+5i99N9QAv6FnBw401hYxdB/OjByA/cGtzq8o87VPb865mSirXYNp1 eK44B9jC0iCQ0lkDsjCHzZvu8ui6ESo9HPDKNNVwLX5OjVaHr67LFtnhTZLbDh80 VkmcMvvzJs2OIL9gHb2NqAyiAWbB0KHeE4t/TKR4Mdi0+ELee2yhKyUv8YRuqo+Z sZ3L+UJzRHJgqlZoGJEVF6TEtr/1Xn3F1H6amjlzb+mZCu5fikAAvc9wxdipnlxL hawiE38FK8Ckjkoc+Zj42c/k32BI4E6kc3gWtezU3nySZXtqT324wZi/DC7yUDLe poF5qDNUBgt14yZesc58yDvUCljutycX16W1CDyv8kqP0a8IFt2V0VAGra2Qrr0p ax3sLbzJ3JLFo2QNcNcCS+fGqgGGii6kecy7k/Ys6x2ARc4hbIEN9MEy9+oa+Ile 3EljqiNHS15HXokq2Jlm6lNKXGMKfOcic4t0T3/mcn3LzKAqTJtcxu5PwRzxmixT aLHAUMIO3icYRn6Vaszy =mKmT -----END PGP SIGNATURE----- _______________________________________________ Tech mailing list Tech@cryptech.is https://lists.cryptech.is/listinfo/tech
