Hardware & Devices

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Implementation of RSA Kimdave25-Jul-05 6:35 Kimdave 25-Jul-05 6:35  Dear All, Im so confused when it comes to RSA implementation. Can someone please tutor me on how to do the calculation: Take for example: p=7, q=11 and a proper value of e to encode text "OLAJIDE", I translate each letter to be: O=15 L=12 A=1 J=10 I=9 D=4 E=5 How do I apply the decrption/encryption to recover the original plaintext? Thank you. Re: Implementation of RSA Alexander M.,25-Jul-05 9:01 Alexander M., 25-Jul-05 9:01  What does this have to do with hardware? Don't try it, just do it! Re: Implementation of RSA Mike Dimmick26-Jul-05 8:08 Mike Dimmick 26-Jul-05 8:08  Details of the RSA algorithm[^]. If you're interested for theoretical reasons, go ahead. If you're trying to implement it yourself, don't bother: use a tested, FIPS-approved implementation. On Windows, from C++, use the Cryptography API[^]. From Visual Basic or a scripting language, use CAPICOM[^], the COM wrapper around the Cryptography API. From the .NET Framework, use System.Security.Cryptography.RSACryptoServiceProvider[^]. Stability. What an interesting concept. -- Chris Maunder Windows 2003 sound card drivers Sumit Domyan25-Jul-05 2:17 Sumit Domyan 25-Jul-05 2:17  I am not able to install sound card drivers for Windows 2003 server in IBM Thinkcenter A50 Sumit Domyan Re: Windows 2003 sound card drivers Farhan Noor Qureshi25-Jul-05 6:33 Farhan Noor Qureshi 25-Jul-05 6:33  I faced the similar problem at my old job with IBM Intellistation Pro M. The very good tech support guy Tony did the trick by installing the generic intel sound card drivers. If your Thinkcenter has intel sound card try installing generic drivers, you'll get the most basic sound I/O. Farhan Noor Qureshi Re: Windows 2003 sound card drivers Alexander M.,25-Jul-05 9:03 Alexander M., 25-Jul-05 9:03  Google for it. Maybe there are different versions of that driver on the net. Don't try it, just do it! How to change drive letters? [Marc]22-Jul-05 8:39 [Marc] 22-Jul-05 8:39  Hi folks, I would like to know how to change the drive letters on my computer. When i installed WindowsXP, it set the drive letter of my primary hard drive to I: That kinda sucks, and 4 cardreader drives are C:, D:, E: and F: And i have Zip-drive with G:, and a DVD-writer with H: Does anyone know how to change all these drive letters Any help is appreciated! Re: How to change drive letters? Dan Neely22-Jul-05 9:24 Dan Neely 22-Jul-05 9:24  I'm not sure offhand, but would advise against doing it until you've got time to reinstall all of your software, and possibly your OS as well. When you rename your HD you'll hose a mess of shortcuts and saved paths. You can fix the start menu without too much pain, but hunting down all the entries in the registry and ini files would be a nightmare. In addition some apps with more paranoid security settings will asume they're not on the same system anymore and demand you provide thier serials again, so have those ready as well. Re: How to change drive letters? [Marc]22-Jul-05 9:49 [Marc] 22-Jul-05 9:49  Well, nothing is installed yet (only windows and some drivers). I once got a program with the installation-cd from the zipdrive, that could change all drive letters. But i lost it If i reinstall the OS, don't you think windows will make the hard drive I: again? I got some articles from support.microsoft.com, but i also read some stories that the system became unbootable. I keep my fingers crossed... Re: How to change drive letters? Dan Neely22-Jul-05 10:10 Dan Neely 22-Jul-05 10:10  Windows should fix it's own things when changed (I hope) but I remember doing a drive letter change once not sure if ut was under 98 or 2k, and practically ending up doing a full reinstall afterwards. You might be able to specify drive letters at OS install time, I don't know. I'm assuming you've got a real OS disk. If you're limited to an oem reformat+install factory image abomination all bets are off. Re: How to change drive letters? Gitte Bager22-Jul-05 10:31 Gitte Bager 22-Jul-05 10:31  Hi Try this out.. http://www.mvps.org/marksxp/WindowsXP/driveltr.php[^] Re: How to change drive letters? [Marc]22-Jul-05 11:28 [Marc] 22-Jul-05 11:28  No, ain't gonna work: Partitions that are marked as (System) such as C: in the 1st picture cannot have their drive letter changed I want to change I: (system drive) to C: Thanks for the effort though! Problem (sort of) solved! [Marc]22-Jul-05 14:15 [Marc] 22-Jul-05 14:15  So i did some registry hacking from support.microsoft.com, and rebooted the pc. It got up to the welcome screen, but then it stopped! So i first tried to do some hacking with the install cd, but nothing worked. That way i ended up reinstalling everything. And guess what? The drive letters are all ok now! The hard drive is just plain old C:, instead of some stupid I:. Thank God that i didn't install anything! Re: How to change drive letters? Alexander M.,24-Jul-05 3:33 Alexander M., 24-Jul-05 3:33  You can find this option in the administrator tools of windows. I think the option is called "computer management" in the english windows version. You will find a disk management page there where you can create/delete/format system partitions. Select one of the partitions (or CD-roms, DVDs, ...) with the right mouse button and you will see an option to assign a new letter to that drive. You can also create more than one letter for a single drive or remove all letters with that option. Don't try it, just do it! Re: How to change drive letters? [Marc]24-Jul-05 13:22 [Marc] 24-Jul-05 13:22  Thanks for the effort, but the problem was already solved (see 1 post up). In the diskmanagement you can change drive letters, but not of the system partition, and that is what i want to do. But thanks anyway! Re: How to change drive letters? toxcct24-Jul-05 20:57 toxcct 24-Jul-05 20:57  you cannot change the letter of the partition where the system is installed... i had the same problem (Windows was supposed to install on C:, but it did on H: just because i had some peripherals connected). i just disconnected the other HDD and reinstalled windows. i think you're not obliged to disconnect the hard disk which contains other partitions ; fdisk might provide a function to de-activate a partition... TOXCCT >>> GEII power [toxcct][VisualCalc] Re: How to change drive letters? [Marc]25-Jul-05 7:35 [Marc] 25-Jul-05 7:35  You can change the drive letter of the system partition, but then you will probably f*** windows up. I found an article that showed how to do it. With the help of that article i did some tweaking in the registry. windows started fine, until i clicked on a user, then it hung. maybe i had to change some system variables too, i don't know. Anyhoo, windows got stuck, so i reinstalled windows just like you. I disconnected that stupid cardreader, and everything worked fine! Is my NIC dead? David Wulff19-Jul-05 9:27 David Wulff 19-Jul-05 9:27  Today, for no apparent reason, I am unable to connect to the network using the onboard network port on my PC. I have tried plugging another machine in by just unplugging that machine and plugging the cable straight into the new one and it works fine, so the problem seems to be with the computer not the network or hardware. When I plug the cable into the computer it lights up green and starts flashing like it normally does when it was working. In Windows, the status reads "network cable unplugged" but if I disable and then enable the adapter it flashes up as "acquiring network address" for a split second before returning to the previous message. Any ideas? Can I test something? Change something? Does this sound like the port on my computer has suddenly died? Any help would be appreciated... I don't have the space to isntall a PCI NIC as all the slots are in use, and I would rather not have to replace the whole damned motherboard for a $1 component. Ðavid Wulff Audioscrobbler :: flickr Die Freiheit spielt auf allen Geigen (QT) Re: Is my NIC dead? Andy Brummer19-Jul-05 10:35 Andy Brummer 19-Jul-05 10:35  Check to see if the nic was disabled in the bios. Then reset settings for the bios and check that. After that check to see if there is a bios settings reset jumper on the motherboard. Also, you might want to test it with a minimum of extra cards plugged in. Another common culprit is windows update "upgrading" drivers. I can imagine the sinking feeling one would have after ordering my book, only to find a laughably ridiculous theory with demented logic once the book arrives - Mark McCutcheon Re: Is my NIC dead? David Wulff19-Jul-05 12:24 David Wulff 19-Jul-05 12:24  I shall check out the bios and give what you've said a try. I dont think it would be WU though as it hasnt downlaoded anything in a about week and the NIC was working this morning. Ðavid Wulff Audioscrobbler :: flickr Die Freiheit spielt auf allen Geigen (QT) Re: Is my NIC dead? David Wulff22-Jul-05 8:30 David Wulff 22-Jul-05 8:30  I tried everything you suggested, and played with a couple mroe settings I found, but nothing seemed to help. I installed a PCI NIC in place of the PCI WiFi card for the time being. Ðavid Wulff Audioscrobbler :: flickr Die Freiheit spielt auf allen Geigen (QT) Re: Is my NIC dead? Andy Brummer22-Jul-05 19:44 Andy Brummer 22-Jul-05 19:44  That's the problem with the integrated devices. If they do fail, they are part of the motherboard. Another possibility is that you have a network cable that is close to tolerence. In that situation you will get ittermitent connection, some NICs will work some won't and the ones that do work will have outages, but it sounds like the NIC probably failed. Most "hardware" problems are really driver/software problems so you typically have to go much further out of your way to elminate software problems. Some of NIC companies had diagnostic applications that ran under DOS that might be able to give a more definite result, but like I said it's probably let out the magic smoke. At least they make motherboards with dual NICs these days. I can imagine the sinking feeling one would have after ordering my book, only to find a laughably ridiculous theory with demented logic once the book arrives - Mark McCutcheon Re: Is my NIC dead? David Wulff23-Jul-05 0:04 David Wulff 23-Jul-05 0:04  I've spent so much time trying to get it working over this past week that now I'm prepared to just let it be. In the not too distant future the whole machine will need rebuilding anyway so I will cycle the motherboard round to a testing machine and then see if I can find some diagnostics software to run on it. Ðavid Wulff Audioscrobbler :: flickr Die Freiheit spielt auf allen Geigen (QT) Re: Is my NIC dead? Graham Bradshaw20-Jul-05 5:28 Graham Bradshaw 20-Jul-05 5:28  David Wulff wrote: I would rather not have to replace the whole damned motherboard for a $1 component. If it is dead, you can get USB network adapters, so if you have a spare USB port, you're back in business. can i play the same sound file on two different sound card at the same time max_xiayi16-Jul-05 4:23 max_xiayi 16-Jul-05 4:23  anyone has done such job?please give me some hint!Thanks a lot please contact: max_xiayi@hotmail.com

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