It is probably very difficult, possibly impossible in practice, to
backdoor a symmetric cipher. For evidence, I direct you to this old
paper by Blaze, Feigenbaum and Leighton:
http://www.crypto.com/papers/mkcs.pdf
There is also a theorem somewhere (I am forgetting where) that says
On Thu, 5 Sep 2013 23:24:54 -0400 Jerry Leichter leich...@lrw.com
wrote:
They want to buy COTS because it's much cheap, and COTS is based on
standards. So they have two contradictory constraints: They want
the stuff they buy secure, but they want to be able to break in to
exactly the same
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On Sep 5, 2013, at 9:33 PM, Perry E. Metzger pe...@piermont.com wrote:
It is probably very difficult, possibly impossible in practice, to
backdoor a symmetric cipher. For evidence, I direct you to this old
paper by Blaze, Feigenbaum and
