Calculator hackers crack OS signing key, opening a closed platform
1–10 of 44 posts
Re: Calculator hackers crack OS signing key, opening a closed platform
#2A man has just become immortal. TI scene will never be the same again; the TI-83 calculator turns to an open platform today (The 83 is mandatory in U.S. education and sometimes distributed for free, all American High Schoolers use it, and did so for at least the last 10 years.) Bonafide 3rd party OSes can be loaded on it now, no more shells.
Help crack the rest of the keys (Win32 and Linux clients; linux version requires X I just found out):
http://boinc.unsads.com/rsals/
Some fun statistics:
- The factorization took, in total, about 1745 hours, or a bit less than 73 days, of computation. (I've actually been working on this since early March; I had a couple of false starts and haven't been able to run the software continously.)
- My CPU, for reference, is a dual-core Athlon64 at 1900 MHz.
- The sieving database was 4.9 gigabytes and contained just over 51 million relations.
- During the "filtering" phase, Msieve was using about 2.5 gigabytes of RAM.
- The final processing involved finding the null space of a 5.4 million x 5.4 million matrix.
Re: Calculator hackers crack OS signing key, opening a closed platform
#3A man has just become immortal. TI scene will never be the same again; the TI-83 calculator turns to an open platform today (The 83 is mandatory in U.S. education and sometimes distributed for free, all American High Schoolers use it, and did so for at least the last 10 years.) Bonafide 3rd party OSes can be loaded on it now, no more shells. Help crack the rest of the keys (Win32 and Linux clients; linux version requ…
Holy Cthulhu, you can crack 512-bit RSA in 73 days on a single computer these days?
Re: Calculator hackers crack OS signing key, opening a closed platform
#4A man has just become immortal. TI scene will never be the same again; the TI-83 calculator turns to an open platform today (The 83 is mandatory in U.S. education and sometimes distributed for free, all American High Schoolers use it, and did so for at least the last 10 years.) Bonafide 3rd party OSes can be loaded on it now, no more shells. Help crack the rest of the keys (Win32 and Linux clients; linux version requ…
Holy Cthulhu, you can crack 512-bit RSA in 73 days on a single computer these days?
[deleted]
Re: Calculator hackers crack OS signing key, opening a closed platform
#5A man has just become immortal. TI scene will never be the same again; the TI-83 calculator turns to an open platform today (The 83 is mandatory in U.S. education and sometimes distributed for free, all American High Schoolers use it, and did so for at least the last 10 years.) Bonafide 3rd party OSes can be loaded on it now, no more shells. Help crack the rest of the keys (Win32 and Linux clients; linux version requ…
Holy Cthulhu, you can crack 512-bit RSA in 73 days on a single computer these days?
On a single ridiculously slow computer. Even the slowest Core 2 Quad would be able to factor 8x faster.
Re: Calculator hackers crack OS signing key, opening a closed platform
#6A man has just become immortal. TI scene will never be the same again; the TI-83 calculator turns to an open platform today (The 83 is mandatory in U.S. education and sometimes distributed for free, all American High Schoolers use it, and did so for at least the last 10 years.) Bonafide 3rd party OSes can be loaded on it now, no more shells. Help crack the rest of the keys (Win32 and Linux clients; linux version requ…
Holy Cthulhu, you can crack 512-bit RSA in 73 days on a single computer these days?
Now I'm curious. First of all, any random Core Duo could probably put a significant dent in that timeframe if all he had was an Athlon 64. Second, what would the effect of CUDA be on this? It was extremely useful in that MD5 contest earlier.
Re: Calculator hackers crack OS signing key, opening a closed platform
#7A man has just become immortal. TI scene will never be the same again; the TI-83 calculator turns to an open platform today (The 83 is mandatory in U.S. education and sometimes distributed for free, all American High Schoolers use it, and did so for at least the last 10 years.) Bonafide 3rd party OSes can be loaded on it now, no more shells. Help crack the rest of the keys (Win32 and Linux clients; linux version requ…
> (The 83 is mandatory in U.S. education and sometimes distributed for free, all American High Schoolers use it, and did so for at least the last 10 years.)
It's a bit off the subject, but this has always struck me as a terrible scam. For the material it is used for (introductory calculus) and the way it is used, one of these TI calculators hurts student learning and understanding more than it helps, and there is no excuse for schools to force students to purchase a $100 piece of electronics without a damn good reason. That these devices are absurdly overpriced compared to the state of the art (~$100 multipurpose netbooks, for instance), and that the models required are made by a single company with monopolistic coordination with standardized tests and textbooks, only make things worse.
Learning how to use a calculator is perhaps a useful skill, but it's one that can be learned quickly if needed and should not be pervasively required: for most math done for math's sake (that is, as opposed to computations for some engineering problem), students would be better off if teachers instead made problems that could easily be worked with pen and paper.
(Personally, I made it through high school and then up through upper-level undergraduate mathematics, physics, econometrics, etc. courses without ever buying a graphing calculator, so it’s clearly not strictly mandatory for current curricula, but students and parents get the impression that it is essential, and the vast majority of students do buy them, so the effect is about the same.)
Re: Calculator hackers crack OS signing key, opening a closed platform
#8Unfortunately it's a ridiculously shitty hardware platform to be developing for in 2009. It's a motherfucking Z80, for $100 -- a vintage Game Boy minus any decent sprite graphics hardware, with enormous profit margins and a captive market (enforced by regulation) of a million a year.
Yes, the OS on the TI-83 is dogshit, but I have a feeling that it's pushing the limits of what's reasonable on the hardware. The TI-89 has a terrific input language and OS (almost mac-like compared the the apple-II-ness of the 83), but running on a m68k.
Who knows, maybe someone can at least make a firmware that not only forces you to close your parentheses, but gives you some benefit for doing so.
Re: Calculator hackers crack OS signing key, opening a closed platform
#9Earlier quoted context omitted.
Holy Cthulhu, you can crack 512-bit RSA in 73 days on a single computer these days?
Now I'm curious. First of all, any random Core Duo could probably put a significant dent in that timeframe if all he had was an Athlon 64. Second, what would the effect of CUDA be on this? It was extremely useful in that MD5 contest earlier.
try this baby:
Re: Calculator hackers crack OS signing key, opening a closed platform
#10Oh those good memories of the TI-83, my first and only foray into the world of assembler programming, trying to cram a complex algorithm in 6 registers, the good times!