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Talk:RDRAND

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This is an old revision of this page, as edited by David in oregon (talk | contribs) at 20:21, 15 December 2011. The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.

How often is the deterministic generator seeded by the non deterministic conditioner seeded by the entropy source?

In Ivy Bridge, the entropy source runs at 2.5Gbps. The conditioning ratio is 2:1, so the seeding data rate is 1.25 Gbps. Each seed is 256 bits. So the DRBG is reseeded at a maximum rate of 4.88 Million 256bit seeds per second. It will not reseed if there have been no RdRand instructions executed since the last reseed, since it will halt for power saving purposes when idle. David in oregon (talk) 20:21, 15 December 2011 (UTC)[reply]

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