So, we can get a native MirageOS? Nice.
Calculator hackers crack OS signing key, opening a closed platform
21–30 of 44 posts
Re: Calculator hackers crack OS signing key, opening a closed platform
#22What about my oldskool TI-86? No love for that? :(
Re: Calculator hackers crack OS signing key, opening a closed platform
#23What's the legality of this, I wonder? (Toying with the idea of joining the compute cluster or not)
Re: Calculator hackers crack OS signing key, opening a closed platform
#24Earlier 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.
The engineyard contest? They had CUDA participants iirc.
Re: Calculator hackers crack OS signing key, opening a closed platform
#25Earlier quoted context omitted.
> (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…
And now a cracked OS allows cheating since they have an approved 'test mode" to prevent access to stored files. http://education.ti.com/educationportal/sites/US/homePage/ns... So blinking the led without any access blocking will be an early task for the subversive TI hacker.
Crazy what they have these days. Back when I was in high school (first year they required the 83) our teachers simply required we showed every step. So we could get the answer with a few key presses, but unless we showed how to get the answer we wouldn't get credit. Of course I wrote programs to solve the problems step by step and print out the answer, but I guess the system works because in the process of being clever and writing the programs I of course learned how to solve the problems step by step.
Re: Calculator hackers crack OS signing key, opening a closed platform
#26The post on TI forum reminds me of when decss was cracked and an email was sent to the list saying something like: "Here are some random numbers that are good for initializing your card game shufflers and stuff like that" Followed by several dozen keys. It got printed out and put on a dorm room door :)
Re: Calculator hackers crack OS signing key, opening a closed platform
#27A 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…
Might be fun to try making a javascript workers version. While it is not as powerful I am curious how many more users you can get.
Re: Calculator hackers crack OS signing key, opening a closed platform
#28Earlier quoted context omitted.
And now a cracked OS allows cheating since they have an approved 'test mode" to prevent access to stored files. http://education.ti.com/educationportal/sites/US/homePage/ns... So blinking the led without any access blocking will be an early task for the subversive TI hacker.
Crazy what they have these days. Back when I was in high school (first year they required the 83) our teachers simply required we showed every step. So we could get the answer with a few key presses, but unless we showed how to get the answer we wouldn't get credit. Of course I wrote programs to solve the problems step by step and print out the answer, but I guess the system works because in the process of being clev…
I had a nice and crazy little Chinese professor for numbers theory in college. I never knew what he was saying, but he would tell us the questions for the exam the day before. I asked him if I could use my ti-92+ and he said yes, so I just programmed in brute force algorithms, entered in the data, then sat back while the 10MHz processor crunched.
Re: Calculator hackers crack OS signing key, opening a closed platform
#29Earlier quoted context omitted.
> (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…
And now a cracked OS allows cheating since they have an approved 'test mode" to prevent access to stored files. http://education.ti.com/educationportal/sites/US/homePage/ns... So blinking the led without any access blocking will be an early task for the subversive TI hacker.
However, it looks like that test mode doesn't apply to the model that was cracked.
Re: Calculator hackers crack OS signing key, opening a closed platform
#30Unfortunately 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…
But... it's a calculator!
And it has a headphone jack! And a bitmap screen! And a full keyboard!