714 reputation
44
bio website ucs.louisiana.edu/~avm1260
location Lafayette, LA, USA
age 45
visits member for 1 year, 3 months
seen Dec 24 '13 at 1:30

With the move of MathOverflow into the SE network, this account is now associated with dormant accounts in math.SE and other sites in the network. While I plan to continue my (generally low-level) participation in MO, my current plans do not include restarting my participation in those other sites. Therefore, I will be ignoring any comments or pings that reach me from those sites, unless and until I resume my active participation there.

I remain "gone for the foreseeable future" from math.SE, tex.SE, and meta.SE.

Please do not send me private e-mail to call my attention to comments, questions, or other matters related to those sites. Thank you.


Jul
6
awarded  Yearling
Sep
27
comment Is modern encryption needlessly complicated?
@NDF1: I am well aware that one time pads work perfectly fine in practice precisely in the way you mention, thank you. In fact, I mention precisely this in my first two paragraphs. The whole point, which I raise explicitly in the third paragraph, is that one time pads do not allow us to engage in secure communciation ex nihilo ("from nothing"); we must have arranged an exchange prior to the communication. If I now decide that I want to communicate securely with you, now, without every having made arrangements ahead of time, we cannot use one time pads. As I explained.
Jul
6
awarded  Enlightened
Jul
6
comment Is modern encryption needlessly complicated?
@mike: True, but the difference is that in that kind of exchange (as in a key exchange), the secure channel has limited bandwidth/speed. The problem with a one time pad is that the one-time-pad needs to be as long as the intended message: if you have the bandwidth/time to exchange a one-time-pad, then you have the bandwitdh/time to exchange the message you want to begin with.
Jul
6
awarded  Autobiographer
Jul
6
awarded  Good Answer
Jul
6
awarded  Guru
Jul
6
awarded  Nice Answer
Jul
6
awarded  Teacher
Sep
2
awarded  Mortarboard
Sep
2
answered Is modern encryption needlessly complicated?