tag:blogger.com,1999:blog-2659416969867866171.post4473177312750726686..comments2024-03-29T01:25:41.618-07:00Comments on No Tricks: A USB Entropy DriveAnonymoushttp://www.blogger.com/profile/16153635896554944056noreply@blogger.comBlogger10125tag:blogger.com,1999:blog-2659416969867866171.post-34717384276901485152013-02-19T01:21:55.970-08:002013-02-19T01:21:55.970-08:00I am going through this post and thinking of it’s ...I am going through this post and thinking of it’s theme and trying to understand what is this post about. At last I can have found something from this post which feels pretty good.<br /><a href="http://www.promodisc.org/" rel="nofollow">DVD packaging</a>Anonymoushttps://www.blogger.com/profile/13043005640218128613noreply@blogger.comtag:blogger.com,1999:blog-2659416969867866171.post-62970312396101522402013-01-24T22:05:42.880-08:002013-01-24T22:05:42.880-08:00USB entropy drive is described here. Read details ...USB entropy drive is described here. Read details from here<br /><a href="http://www.summittechnology.com.au" rel="nofollow">CD distribution</a>SummitTechnologyhttps://www.blogger.com/profile/04512932415805218940noreply@blogger.comtag:blogger.com,1999:blog-2659416969867866171.post-64140627997768269602011-09-04T23:43:28.749-07:002011-09-04T23:43:28.749-07:00really interesting post I entertain reading this.
...really interesting post I entertain reading this.<br /><br /><br /><br />Laby[<a href="http://www.mensusa.com/tools.aspx?id=230" rel="nofollow"><b>big and tall suits</b></a>]Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-2659416969867866171.post-75665513829736933832011-01-28T01:42:14.642-08:002011-01-28T01:42:14.642-08:00Thanks for the interesting post about entropy. The...Thanks for the interesting post about entropy. The <a href="http://www.promo-usb.net" rel="nofollow">promo usb</a> entropy drive is quite impressive, it manages to get quite close to 4096 bytes most of the time, which is brilliant for our purposes.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-2659416969867866171.post-69299954561120066222009-12-17T03:18:50.058-08:002009-12-17T03:18:50.058-08:00Thanks Vincent, I will make some changes to the po...Thanks Vincent, I will make some changes to the post<br /><br />rgs LukeAnonymoushttps://www.blogger.com/profile/16153635896554944056noreply@blogger.comtag:blogger.com,1999:blog-2659416969867866171.post-26477749692544795352009-12-15T08:45:42.893-08:002009-12-15T08:45:42.893-08:00Hi, Just a couple of quick points.
The Entropy Ke...Hi, Just a couple of quick points.<br /><br />The Entropy Key is on general sale now via the website.<br /><br />We use the skein functions for both the hashing and encryption of the data from the device, this still leaves one shannon per bit in the resulting data.<br /><br />The statistic interface gives you the values from each stage of the process as outlined in the diagram so statistical biasing etc. can be monitored by the client, however as the key locks itself out if these values fall outside our rather conservative estimates of "good" its difficult to observe this.<br /><br />We provide the complete client daemon source under an MIT license which means everyone is free to examine the code for themselves.<br /><br />The output rate is, by its nature, variable but we expect an average rate from a key of more than 30 kilobits per second.<br /><br />We have run the output of several randomly selected devices through die harder and after gathering several gigabytes of output they have always passed.<br /><br />We have an IRC channel #ekey on the oftc network if you want to discuss any of this further.Vincent Sandershttps://www.blogger.com/profile/02686407477776093281noreply@blogger.comtag:blogger.com,1999:blog-2659416969867866171.post-1569001936580281072009-12-14T13:59:07.974-08:002009-12-14T13:59:07.974-08:00Hi Bill,
the details are sketchy, more an outline...Hi Bill,<br /><br />the details are sketchy, more an outline than an algorithm. I think there would be a lot of tuning involved to get the tests rights from one stage to the next. <br /><br />As to the hashing, it should act as a compression function that preserves high entropy, joining the two streams together. Perhaps it would be easier to just run Maurer's test on the XOR of the streams. <br /><br />They have some graphs to show that the usb source can be used to replenish server randomness but I don't think they give a rate. I am not familiar with company and no names are listed. <br /><br />BTW, I did post a while back a thesis on the analysis of the Linux RNG (their target platform it seems) to scribd here<br /><br />http://www.scribd.com/doc/12796050/An-analysis-of-the-Linux-Random-Number-Generator-Tzachy-Reinman-MSc-thesis-2005<br /><br />984 reads so far<br /><br />rgs LukeAnonymoushttps://www.blogger.com/profile/16153635896554944056noreply@blogger.comtag:blogger.com,1999:blog-2659416969867866171.post-26918511370907497022009-12-14T10:10:55.299-08:002009-12-14T10:10:55.299-08:00Lovely. Although the kernel warnings are a trifle ...Lovely. Although the kernel warnings are a trifle offputting, that's not their issue and they have user-space workaround.<br /><br />The final hash obviously makes investigation of any remaining device bias difficult. But does the final Hash mean this source's quality is limited by the quality of the chosen cryptohash? <br /><br />The suggestion of blending these bits into system-produced bits in /dev/random seemingly allays fears of the device as trojan horse. But to have actual value, its source will produce bits far faster than the intrinsic system sources -- else why bother -- so the dilution is pretty low. Are the proprietors (and any offshore manufacurering partners) known in the Community?Unknownhttps://www.blogger.com/profile/17985368473378338995noreply@blogger.comtag:blogger.com,1999:blog-2659416969867866171.post-60273173183383089392009-12-14T01:42:23.977-08:002009-12-14T01:42:23.977-08:00I am asking santa!I am asking santa!Anonymoushttps://www.blogger.com/profile/16153635896554944056noreply@blogger.comtag:blogger.com,1999:blog-2659416969867866171.post-60058574435709765912009-12-14T00:56:08.386-08:002009-12-14T00:56:08.386-08:00Very interesting story about producing entropy. Ha...Very interesting story about producing entropy. Have you order one already?oljhttps://www.blogger.com/profile/04155990698964856876noreply@blogger.com