TheCodeBreakers
instructions, spare parts, and associated materials for the Armed Forces)
is produced by, or procured under, the direction of N.S.A.," states an Air
Force manual. The same must be true for the Army, the Navy, and the
State Department. COMSEC standardizes as much of American
cryptography as practicable, down to the short titles of communications
security publications. Thus the Air Force Communications Security
Manual 2, formerly known as AFCOMSECM-2, is now listed as AFKAG-2.
COMSEC prepares courses of instruction for new cryptographic equipment
and issues regulations for its operation, presumably mandating such
matters as the when and how of primary and secondary key changes. For
interdepartmental and presidential communications, it probably
produces the keys—rotor wirings, lists of positions, one-time tapes. Keys
for communications wholly within, say, the Air Force are presumably
produced by its own cryptographic agencies.
annaabi.ee 
