On Monday 01 July 2002 12:23 pm, you wrote:
A friend of mine told me that 1024bit keys were broken, and he advised me to use 4096bit keys... I think he is confusing ssl with ssh. Do you have similar information on this?
Praise
To give you an idea. June 1997, 56 bit DES key was cracked. August 1999, 512-bit RSA key was cracked. (At the time, 95% of the keys used in e-commerce were 512 bits long.) Recommended public-key key lengths (in bits) [Source: Bruce Schneider, Applied Cryptography] Year Individual Corporation Government 1995 768 1280 1536 2000 1024 1280 1536 2005 1280 1536 2048 2010 1280 1536 2048 2015 1536 2048 2048 Summary of Recent Cracking Efforts Algorithm Key Size Cracked on Duration RSA 425 1994 240 days RC4 40 8-95 8.5 days RC5 40 1-97 3.5 hours RC5 42 2-97 313 hours DES 56 6-97 140 days RC5 56 10-97 265 days DES 56 2-98 39 days -- Steve Szmidt V.P. Information Technology Video Group Distributors, Inc.