TheCodeBreakers
S. Intelligence Board. During the
Korean War, the White House itself reportedly called for solutions, even
though some were fragmentary. Currently, the President sees the N.S.A.
"Black Book" every morning, brought to him by his military aide.
What does it all consist of? How successful is N.S.A., and how
valuable are its results?
It is likely that N.S.A. reads only a small minority of the total volume
of intercepts sent it—perhaps under 10 per cent. In peacetime,
encipherers can work more slowly and more accurately than in war—yet
even in the wartime conditions of the Russian front, with a great volume
of messages and unquestionably many more errors, Germany's Army
Group North solved less than 30 per cent of Russian military
cryptograms. Moreover, the N.S.A. intercept posts probably concentrate
on messages in the highest priority systems, yet these must be the best
systems and must often resist solution, thus lowering N.S.A.'s average.
Nevertheless, N.S.A
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