This are the OS signing keys for different Texas Instruments calculators. The key for the TI-83 calculator was first published by someone at the unitedti.org forum in this message: http://www.unitedti.org/index.php?showtopic=8888. He or she needed several months to crack it. The other keys were found after a few weeks by the unitedti.org community through a distributed computing project. The keys make it possible to sign your own operating system for the Texas Instruments calculators.

Texas Instruments now contacted several people with a DMCA notice to take down the keys from their websites. Some of the websites which got a DMCA notice are: unitedti.org, brandonw.net and reddit.com. One of these DCMA notices can be found here: http://brandonw.net/calcstuff/DMCA_notice.txt

Here are the three keys:

TI-83 (Plus):

n=82EF4009ED7CAC2A5EE12B5F8E8AD9A0
AB9CC9F4F3E44B7E8BF2D57A2F2BEACE
83424E1CFF0D2A5A7E2E53CB926D61F3
47DFAA4B35B205B5881CEB40B328E58F
p=B709D3A0CD2FEC08EAFCCF540D8A100BB38E5E091D646ADB7B14D021096FFCD 
q=B7207BD184E0B5A0B89832AA68849B29EDFB03FBA2E8917B176504F08A96246CB 
d=4D0534BA8BB2BFA0740BFB6562E843C7
EC7A58AE351CE11D43438CA239DD9927
6CD125FEBAEE5D2696579FA3A3958FF4FC54C685EAA91723BC8888F292947BA1
e=11

TI-84 (Plus):

prp77 factor: 67070508990537181066342707695603050521324524613874331879259881495826493920589
prp78 factor: 186923771200711284770368041572205320486346816476524340240220962467860568859381

n=EF5FEF0B0AB6E22731C17539658B2E91E53A59BF8E00FCC81D05758F26C1791CD35AF6101B1E35
43AC3E78FD8BB8F37FC8FE85601C502EABC9132CEAD4711CB1
p=94489014C63CC9E1E1ADB192DBBDD1F78F90A630DA9C86EFC4CBCA44E5B4D54D
q=19D431AF2794229620B884E3750D622D1C74F2E4569DC15486FC8D5A3BCDFE2F5
d=2A3E1B2010F318D9BD7C7E19300980B055A0E2A9554B77E7142E23CDF7C7CA13C233A3D462FDFC
968B1F9CEAF2AC2CF305147992AD9E834192ACEBB517DB9941
e=11


TI-89:

prp76 factor: 2231124525637629443181963045297394875470510167130210300957267082210173784611
prp79 factor: 3226885534240147415018248397410101286362761128614350056368675111071170873486957

(these are factors of 71995834568684773636720438651160472297127884480206535156843307841378050889714332
73011970552138960583799368215373582308591928985045059261105298431035818727)