On 09/25/2013 03:51 PM, Jonathan Katz wrote:
On Wed, Sep 25, 2013 at 1:30 PM, Greg Rose mailto:g...@seer-grog.net>> wrote:
On Sep 25, 2013, at 9:40 , Jonathan Katz mailto:jk...@cs.umd.edu>> wrote:
> "Every cipher is breakable, given enough traffic": in principle,
yes, as long as th
On Wed, 2013-09-25 at 10:11 -0400, John Young wrote:
> [Answer to the question:] "Does there exist an unbreakable cipher"
> would be this, "Every cipher is breakable, given enough traffic, and
> every cipher is unbreakable, if the traffic volume is restricted
> enough."
>
> [End quote]
>
> Is
- Forwarded message from coderman -
Date: Wed, 25 Sep 2013 23:38:58 -0700
From: coderman
To: brian carroll
Cc: cpunks
Subject: Re: The Unbreakable Cipher (2)
On Wed, Sep 25, 2013 at 9:29 PM, brian carroll
wrote:
> ...
> no- not for a multilinear/nonlinear bit set approach. voluminou
On Wed, Sep 25, 2013 at 1:30 PM, Greg Rose wrote:
>
> On Sep 25, 2013, at 9:40 , Jonathan Katz wrote:
> > "Every cipher is breakable, given enough traffic": in principle, yes, as
> long as the traffic (formally, the entropy of the traffic) is larger than
> the key length.
>
> You misstated this.
On Sep 25, 2013, at 9:40 , Jonathan Katz wrote:
> "Every cipher is breakable, given enough traffic": in principle, yes, as long
> as the traffic (formally, the entropy of the traffic) is larger than the key
> length.
You misstated this. It's breakable if the *redundancy* of the traffic is larg
On Wed, Sep 25, 2013 at 10:11 AM, John Young wrote:
> NSA Technical Journal published "The Unbreakable Cipher" in Spring 1961.
>
> http://www.nsa.gov/public_info/_files/tech_journals/The_Unbreakable_Cipher.pdf
>
> Excerpts:
>
> [Quote]
>
> David Kahn, "Lyen Otuu Wllwgh WI Etjown" pp. 71, 83, 84,
On Wed, Sep 25, 2013 at 10:11:33AM -0400, John Young wrote:
> Is this conclusion still valid? If so, what could be done to restrict traffic
> volume to assure unbreakablility? And how to sufficiently test that.
You need to be able to estimate the rate of information leakage.
This seems to be rela
For your question: Session keys and key rotation?
Den 25 sep 2013 16:11 skrev "John Young" :
> NSA Technical Journal published "The Unbreakable Cipher" in Spring 1961.
>
> http://www.nsa.gov/public_info/_files/tech_journals/The_Unbreakable_Cipher.pdf
>
> Excerpts:
>
> [Quote]
>
> David Kahn, "Lye
NSA Technical Journal published "The Unbreakable Cipher" in Spring 1961.
http://www.nsa.gov/public_info/_files/tech_journals/The_Unbreakable_Cipher.pdf
Excerpts:
[Quote]
David Kahn, "Lyen Otuu Wllwgh WI Etjown" pp. 71, 83, 84, 86,
88 and 90 of the New York Times Magazine November 13, 1960
says
