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 2019-09-23, 14:16 #1 ThiloHarich     Nov 2005 11000112 Posts RSA Hacking + msieve on heise.de Here https://www.heise.de/security/meldun...r-4536268.html is an german article on a startup "Crown Sterling" which is cracking 256-Bit RSA. And there is a link to https://github.com/azet/msieve. Here is an english article: https://arstechnica.com/information-...private-event/
2019-09-23, 16:05   #2
xilman
Bamboozled!

May 2003
Down not across

32×1,129 Posts

Quote:
 Originally Posted by ThiloHarich which is cracking 256-Bit RSA.
Let the kiddies have their fun. They might learn something

 2019-09-23, 16:40 #3 bsquared     "Ben" Feb 2007 CC716 Posts Ha, factored an RSA-256 modulus by ECM in not much more time than it took them... Code: ./yafu "factor(rsa(256))" -threads 16 -plan custom -pretest_ratio 0.5 fac: factoring 75976726387688203817601638468596534025764284763565496650641001676525379253809 fac: using pretesting plan: custom fac: custom pretest ratio is: 0.5000 fac: no tune info: using qs/gnfs crossover of 93 digits fac: no tune info: using qs/snfs crossover of 75 digits div: primes less than 10000 fmt: 1000000 iterations rho: x^2 + 3, starting 200 iterations on C77 rho: x^2 + 2, starting 200 iterations on C77 rho: x^2 + 1, starting 200 iterations on C77 nfs: searching for brent special forms... nfs: searching for homogeneous cunningham special forms... nfs: searching for XYYXF special forms... nfs: couldn't find special form pm1: starting B1 = 150K, B2 = gmp-ecm default on C77 ecm: 30/30 curves on C77, B1=2k, B2=gmp-ecm default ecm: 74/74 curves on C77, B1=11k, B2=gmp-ecm default ecm: 214/214 curves on C77, B1=50k, B2=gmp-ecm default, ETA: 0 sec pm1: starting B1 = 3750K, B2 = gmp-ecm default on C77 ecm: 430/430 curves on C77, B1=250k, B2=gmp-ecm default, ETA: 0 sec pm1: starting B1 = 15M, B2 = gmp-ecm default on C77 ecm: 302/904 curves on C40, B1=1M, B2=gmp-ecm default, ETA: 1.6 min Total factoring time = 72.3544 seconds ***factors found*** P38 = 67199134167669453086583694935300464999 P40 = 1130620614815031153275700821087874561191

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