Hi, Some secure protocols like SSH send encrypted keystrokes as they're typed. By doing timing analysis you can figure out which keys the user probably typed (keys that are physically close together on a keyboard can be typed faster). A careful analysis can reveal the length of passwords and probably some of password itself.
The paper: http://portal.acm.org/citation.cfm? id=1267612.1267637&coll=Portal&dl=GUIDE&CFID=1943417&C FTOKEN=28290455 I'm seriously considering implementing a fix for this weakness. Is there any interest in incorporating this sort of thing into openBSD? Cheers --Kevin
