| Welcome to Crypto. We hope you enjoy your visit. You're currently viewing our forum as a guest. This means you are limited to certain areas of the board and there are some features you can't use. If you join our community, you'll be able to access member-only sections, and use many member-only features such as customizing your profile, sending personal messages, and voting in polls. Registration is simple, fast, and completely free. Join our community! If you're already a member please log in to your account to access all of our features: |
| large number factorization | |
|---|---|
| Topic Started: Jul 6 2009, 05:02 PM (130 Views) | |
| Darksun22 | Jul 6 2009, 05:02 PM Post #1 |
|
Just registered
![]() ![]() ![]()
|
Hello, we're doing an assignment for our university course on cryptography. In order to get the bonus for completing this, we need to factorize a large number, thus gaining the key to an encrypted Message (RSA Encryption). We've got the tools (msieve (http://www.boo.net/~jasonp/qs.html), any hints on something faster?), but not the raw computing power necessary to factorize the number fast enough (for example my specs are: DualCore 2 ghz, factorizing would take days.). Any help would be greatly appreciated. n=26218811125331640126896937461203696544618127965662155572206310743977952199200349502588684707333493281113301 searching for p,q | n=p*q ^ p,q prime |
![]() |
|
| jdege | Jul 7 2009, 01:43 PM Post #2 |
|
Elite member
![]() ![]() ![]() ![]() ![]() ![]() ![]()
|
I see no one has replied. You're unlikely to be able to significantly improve on the performance of msieve in a couple of days. So if you can't wait the days it would take msieve to factor the numbers on your computer, see if you can't borrow some faster hardware. |
| When cryptography is outlawed, bayl bhgynjf jvyy unir cevinpl. | |
![]() |
|
| 1 user reading this topic (1 Guest and 0 Anonymous) | |
| « Previous Topic · Off-topic · Next Topic » |





![]](http://209.85.122.85/static/1/pip_r.png)



12:52 AM Nov 27