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  • klipseracer's Avatar
    Today, 07:35 PM
    So, take all the grains of sand on all the beaches on the earth, thats how many keys we are talking about and that isn't even accurate just gives you a way to fathom this. Not happening with 1024bit RSA. People are surely STILL running brute force attacks on 1024bit RSA since it came out in order to claim the first to accomplish such a task. You know, those Guinness world record crazies? yeah, you can bet they've been running some brute force for years to no avail. Getting the data which is being flashed is easy. Its readily available. Being able to SIGN that data with a private key in order to create a cryptographic signature that the TCU can VERIFY with the public key, is the imposible part. As soon as you change one bit in that file, the signature is broken and the TCU will reject it and probably remain in a diagnostic mode until a rom with a proper signature is loaded. There is no clear answer to this which is spoken publicly, but it was not brute forced like the douchebags over at OpenFlash tablet claim. Saying you've brute forced it is like saying santa clause actually squeezes his fat ass down every chimney. Sure, the key is in the TCU, likely not in the ROM but even if it is, that is the public key. Only for affirming that the signature is from its corresponding private key. It can read the signature but not create it. Good thinking, but again there are lots of bright minds whom know how to make these edits and if it were that simple they would. You can't edit any part of the file if it will break the signature and therefore the TCU will not accept the rom. I think this is your best bet, and by that I mean connecting some gear to this thing and trying to crack it open on a hardware level. But the other problem is you'd need a bunch of BMW tools, hardware and software. Ultimately, you'd probably have to reverse engineer the (TriCore?) processor or whatever happens to be running on the TCU and do acid corrosion microscopy. Where they use hydrochloric acid to etch away the processor layer by layer and use a microscope to map out every single transistor and 'rebuild' the processor and logic in order to find its weaknesses. EDIT: Also, WTF, I was told that Gintani had control over this TCU? I'll have to find a quote but that was an affirmative yes from them as I was very specific about this, I believe by email.
    38 replies | 356 view(s)
  • klipseracer's Avatar
    Today, 07:21 PM
    What are you saying? Firstly, this TCU most likely uses 1024 bit RSA. Secondly, RSA is public key cryptography and AES is symmetric key, two ENTIRELY different forms of crypto used in very different situations and it would be more likely that you'd encrypt an AES key WITH RSA. AES is on the same usage page as RC4 which is a streaming cipher. I'd love to see where RSA 1024 bit has ever been cracked outside of some special lab with special circumstances(Or at all for that matter).
    38 replies | 356 view(s)
  • spxxx's Avatar
    Today, 07:01 PM
    Odesk elance would be solid too.
    38 replies | 356 view(s)
  • Gmanuel11's Avatar
    Today, 06:35 PM
    A brute force effort could do it pretty quickly (we're talking a few months, but still) if it was RSA or asymmetric encryption. There are algorithms out there that can do it much quicker than brute force. But it would be pretty impossible with AES or the newer encryption methods, depending on key length. I can talk to a few people I know from school, who are good with coding and encryption.
    38 replies | 356 view(s)
  • Fishayyy's Avatar
    Today, 06:25 PM
    Thats pretty much what I was getting at as well, but I didn't buy a 15k+ motor so my word has no merit :/
    90 replies | 1146 view(s)
  • chrisisnapping's Avatar
    Today, 05:49 PM
    or o-desk and get someone from the philippines
    38 replies | 356 view(s)
  • spxxx's Avatar
    Today, 05:45 PM
    Time to start posting gigs on Craigslist in college towns to wrangle some CS majors to get to hacking. $20/hr
    38 replies | 356 view(s)
  • Sticky's Avatar
    Today, 05:43 PM
    Excellent. So I mean you will need a diagnostic tool but it looks to be pretty straightforward. I think this is just for the basic clutch kit though or the lower torque capability one I should say. They have two or maybe more at this point?
    5 replies | 56 view(s)
  • AdminTeam's Avatar
    Today, 05:13 PM
    john4all, we appreciate you taking the time to join.
    0 replies | 1 view(s)
  • AdminTeam's Avatar
    Today, 05:08 PM
    Welcome NSJ, take a look around, I think you will like what you see.
    0 replies | 1 view(s)
  • Sticky's Avatar
    Today, 04:50 PM
    Um I never said Alex's work is subpar. Where? When? If that is your inference you missed the point. I said there is still a lot of work to come as far as N54 heads are concerned and that there are different things you can do based on the application. That's it.
    90 replies | 1146 view(s)
  • Sticky's Avatar
    Today, 04:49 PM
    I didn't forget to mention as it's understood in the design, isn't it?
    90 replies | 1146 view(s)
  • 4doorbmwpower's Avatar
    Today, 04:29 PM
    listen... there are a ton of GREAT ideas here. can we start acting on them... the absence of people caring is what hurts this progress. I have an extra Transmission and valvebody. I would GLADLY donate it to this science. I only want a partnership in the MASSIVE revenue that will come from selling the tune. any takers? I have the tranny right now.... I have my level 10 in the car and my old one out.
    38 replies | 356 view(s)
  • Tony@VargasTurboTech's Avatar
    Today, 04:27 PM
    Sure let me know the next time you are around. We can grab a beer and I'll let you jump on the give a shot at balancing some stuff. Your background should make it a breeze for you to pick up.
    31 replies | 1230 view(s)
  • Rob@RBTurbo's Avatar
    Today, 04:24 PM
    Rob@RBTurbo replied to a thread Turbo Balancing. in Advanced Tech
    We use both the Heins/WCB (low speed/component/dual plane) AND the CIMAT (dynamic high speed VSR and middle speed dual plane)… pretty much a requirement to get our results that we can PROVE via a dynamic balance printout. So, let us know when you are balancing to our levels. That is what you are welcome to do anytime… and requires no visits just sending proof via printouts to each of your paying customers. Pretty simple really. As for your native balancing environment, very interesting to see how it does everything from provide exhaust into the turbine to pressurizing a given engine through all of its plumbing. Heck lets even add in the wastegate operation too. We know your machine and it does very little to simulate anything real aside for cutting substantial costs in the initial tool purchase. In short you chose it because it was extremely cheap. Either way hopefully it works well enough for you to realize shortly that you had a lot to learn, which I am sure it will. Thanks, Rob
    31 replies | 1230 view(s)
  • Ingeniator's Avatar
    Today, 04:19 PM
    Ingeniator replied to a thread Turbo Balancing. in Advanced Tech
    Do you do shop tours or anything Tony. Next time I'm down in California I'd love to stop by and take a look. I'm interested in how much of the stuff I deal with actually translates.
    31 replies | 1230 view(s)
  • Tony@VargasTurboTech's Avatar
    Today, 04:18 PM
    Not in the slightest. 100% agreeing with you, just using sarcasm as I do so. You are one of the smarter non vendors on this forum actually doing some very cool with your set up. Nothing but respect for you! Sorry if that seemed aimed at you!
    90 replies | 1146 view(s)
  • 4doorbmwpower's Avatar
    Today, 04:18 PM
    not if its a few grand personally and BMW group doesnt know about it... WE JUST NEED A LEAK ANONYMOUS HELP
    38 replies | 356 view(s)
  • Tony@VargasTurboTech's Avatar
    Today, 04:15 PM
    Good thing I still can't see what captain dipshit is typing. The fact that our second machine is the only one on the market to actually balance in the native turbo environment is why we chose it. This not only means you get a balance in the actual environement that the turbo lives in, it can be used for pulling real flow numbers from turbos installed on it for balancing. Let him spin that one for you, as I am sure he will. He has been balancing his own turbos for all of 6 months, and he is an expert. What are you doing about the turbine plane? Do you first balance the CHRA in both planes, then VSR the compressor plane only. Open invitation, come down to our shop and step onto our component balancing machine which is an industry standard Heins / WCB balancer. We will video you balancing a turbo with out needing any help. I volunteer to do the same. Better yet, bring a prebalanced rotating assembly and put it on there, we will see how close you actually get things before you assemble. You are welcome anytime!
    31 replies | 1230 view(s)
  • Ingeniator's Avatar
    Today, 04:09 PM
    Ingeniator replied to a thread Turbo Balancing. in Advanced Tech
    Missed this in my fight with Rob. Yes that was what I was referring to with my critical frequency comment. Most machines have an RPM range that the machine will resonate at and it should be ramped through that range as fast as possible to prevent machine damage. Like I told Rob I don't balance or build turbos but I do operate and monitor complicated turbo machinery. I do sometimes wish we weren't still using Bentley Nevada racks but what can you do.
    31 replies | 1230 view(s)
  • Sticky's Avatar
    42 replies | 592 view(s)
  • chrisisnapping's Avatar
    Today, 04:08 PM
    hell, can probably pay them like $2k and use the rest of the money to put towards renting out an Amazon AWS HPC for brute forcing.
    38 replies | 356 view(s)
  • The Convert's Avatar
    Today, 04:07 PM
    Tony, for you to say that Alex's current head work is the best the N54 will ever see, is like saying your original stage 1 turbos made the most power the N54 will ever see. So, no need to try other turbos. Your logic is just, well, illogical at best. And as far as you spending all this money on a built motor...go fucking cry about it. No one made you. You're not doing it for the platform. You're doing it for stage 3 sales. You're making an investment that will hopefully provide returns by way of stage 3 sales when you put out big numbers with, hopefully, fast spool up.
    90 replies | 1146 view(s)
  • NniftyFour's Avatar
    Today, 04:06 PM
    USD goes a very long way in Russia, I know a guy who outsources app development to a group of russian programmers, makes a killing paying them $25 usd an hour and billing the client for much more an hour. (I should add these are university graduate computer science majors so not a bunch of amateurs in a room) Maybe @ncat10 can help find some smart kids to crack it. (or translate for us) 5 grand should be ample motivation for good russian hackers. (we don't need bank hackers)
    38 replies | 356 view(s)
  • Rob@RBTurbo's Avatar
    Today, 04:05 PM
    Rob@RBTurbo replied to a thread Turbo Balancing. in Advanced Tech
    Why you are welcoming us to the performance industry standard of VSR dynamic balancing is beyond me, but congrats on the new Hobest VSR so the welcome is extended to you. ;) Take care, Rob
    31 replies | 1230 view(s)
  • chrisisnapping's Avatar
    Today, 04:00 PM
    better off offering a few grand to some kids at a top tier computer science program to crack it. What's 10k to a BMW engineer if it could lead to him losing his job?
    38 replies | 356 view(s)
  • Ericbh77's Avatar
    Today, 03:59 PM
    I asked Alex at Alpina if its possible to code the TCU to increase the line pressure in a ZF 6HP19/21 transmission and he said to remove the TCU and have a tuner bench flash it. He also said it uses the same processors as lower level engine control modules and "shouldnt" be that hard to map. Perhaps he has more info on this?
    38 replies | 356 view(s)
  • Tony@VargasTurboTech's Avatar
    Today, 03:58 PM
    At least someone has reading comprehension. This guy is such a marketing hype misinformation machine. Congrats you bring your CHRA's down below factory specs. Welcome to the performance turbo industry standard.
    31 replies | 1230 view(s)
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