TheCodeBreakers
In one of their greatest technical
successes, the mathematical cryptanalysts cracked the approximately 30
transposition and blank patterns; the linguists read the code, and the
subsequent solutions pro vided the Germans with information about
Russian war production and army activities.
[Codebreakers 220.jpg]
Pers z solution of an encoded message of Robert Murphy to the State Department dealing
with highly secret negotiations with General Weygand in North Africa in 1941
Pers z was an old hand at reading American codes. It had long studied
the American superencipherment. The codewords were only of the cucuc
and cuccu types (c = consonant, v = vowel); to encipher, the code clerk
split them into a single consonant and two cu or uc groups, then
replaced these segments with substitutes from the appropriate tables.
This superencipherment left the cucuc and cuccu configuration of the
annaabi.ee 
