[Cryptography] Imitation Game: Can Enigma/Tunney be Fixed?

John Young jya at pipeline.com
Wed Jan 7 15:34:25 EST 2015

>In addition to what Jon raised, one of the biggest operational 
>defects was the habit of sending out 'test' messages of a single 
>letter repeated. that combined with the reflector no letter maps to 
>itself defect made it
>really easy to spot cribs.

Why were these "faults" not deliberate signals to the Allies? Hard to
believe the meticulous Germans knew less than the Allies about cribbing
potential to reveal and mislead. Nor that post-war accounts are the full
story. Insider communicators playing their own games, and fudged
accounts of how breaks and hacks were done are as old as crypto in
all its guises and disguises.

CIA and its fellow agencies sit on vast archives of classified comsec
accounts of ruses, ploys, deceptions, and more are being manufactured
and deployed, even by trick-loaded open sources.

Cue Dan Geer, rather queue In-Q-tel.

More information about the cryptography mailing list