American Cryptology during the Cold War - The Black Vault

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Chapter 5 Building the Internal Mechanism CRYPTOLOGY IS AUTOMATED- THE STORY OF EARLY COMPUTERIZATION The trouble with machines is people. Edward R. Murrow, 1952 Antecedents Modern cryptanalysis, with its emphasis on the manipulation of large amounts of data, was one ofthe earliest government enterprises to acquire the new office automation equipment being produced by a small company called International Business Machines (IBM). In 1931, OP-20-G obtained some of the new IBM machines and quickly employed them in the cryptanalytic process to sort large amounts of data and determine likes and unlik.es. In 1935 Signal Intelligence Service (SIS) acquired the same type of equipment for the same purpose. By World War II "EAM" (electronic accounting machine) equipment had become commonplace in COMINT processing, and it contributed mightily to codebreaking, especially in the Pacific Theater. By the end ofthe war, OP-20-G and SIS combined were using more than 700 IBM-type machines. 1 Ofthe two, the Navy seemed to be further along. During the 1930s and into the early war years, OP-20-G had attempted a partnership with Vannevar Bush, the renowned MIT (Massachusetts Institute of Technology) scientist, to build a faster comparator for analytic (read cryptanalytic) use. This rather bumpy relationship had so far yielded a number of notable technological and administrative failures when, in 1943, OP-20-G became a partner with GCCS in running attacks against the four-rotor German naval ENIGMA. They ultimately decided on a huge, clunky mechanical marvel which has been dubbed the "American bombe." A technological dinosaur when compared to the devices Bush was experimenting with, the bombe at least worked and was used in the last two and a half years of the war to break German naval ENIGMA keys. The Navy development and contract monitoring operation was called the Naval Computing Machine Laboratory (NCML); it was located on the grounds of National Cash Register in Dayton, Ohio, the prime production contractor. 2 IlAUBhJ!J VIA 'l'ALJ!JU'f ltJ!JY1I6hJ!J e6MlN'f e6f,'l'R6h SYS'l'J!JMS d6IH'fhY NOT REI E Ai Aabi: '];9 f9IU;IQ}1 }T·NflEHlAb6 195
The American Navy Bombe ANavy WAVE checks rotor settings during World WarD. Although a very fast comparator, the bombe was not a true computer. It did not have a stored digital program which could be modified. But even as the Navy designed and built the bombes, the British were moving ahead into the era of true computers. To attack systems even more complex than ENIGMA, GeeS was developing a computer which IIANBLI!: \'IA 'fALI!:N'f KI!lYII6LI!l €6MHff €6N'fft8b SYS'f'ElMS iJ8IN'fbY 196
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NO. 90,3 UNITED STATES CRYPTOLOGIC
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'fOP !!(:FU!T tlM81b\ UNITED STATES
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.§ Ib) (1) .~; Ib) (3) -50 USC 403
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'fap SECRIiTjJ.MB'1t4 The Reorganiz
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fepSEeRET~ Non - Responsive IOP3EeR
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T6'5ECRET~ Non - Responsive iii A ;
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TOPSEeRE~ American History, 1775-19
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'(b) (3) -P.L. 86-36 TOP SECAr, tJM
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--------------~ - - - -- - - TOp Si
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Tap SECRET~RA One other wartime acc
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TOP5iCRET~ exacted revenge over a p
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lap 5fEftf'f ~BRA order to tighten
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1'011 S!CRET~ Government offices on
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Te"S!CREI~ were to continue to trai
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:rep 'I!!!CRE I U~RA Rowlett and Wi
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:rep Sl!eREru~ cryptanalysts, Lieut
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liaison office had maintained an of
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Ib) (1) Ib) (3) -50 USC 403 Ib) (3)
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Ib) (3) -P.L. 86-36 ..tOP §EERI!T~
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~PSEeREr~ Rear Admiral Earl E. Ston
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Ib) (1) Ib) (3) -P.L. 86-36 Ib) (3)
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Analytic section, Arlington Hall St
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lOP 5I!CREfij~RA Ib) (1) Ib) (3) -P
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Ib) (1) Ib) (3) -P.L. 86-36 Ib) (3)
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George A. Brownell The Brownell Com
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fe, 5EEREf UMBRA KOREA Ithas become
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OPSECREi tJM8itA to sink or swim on
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TOP SECRET liMBItA dramatic switch
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T9P SECRET liMBIbIc When the ROK ar
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Ib) (1) Ib) (3) -P.L. 86-36 Ib) (3)
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op SECRET l::JMBRA However, encount
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Ib) (1) Ib) (3) -P.L. 86-36 Ib) (3)
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lap SECRET l:JMBRA In early 1952 mu
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TOP SECRETtJMBItA The AFSA Factor O
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Ib) (1) Ib) (3) -50 USC 403 Ib) (3)
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Ib) (1) Ib) (3) -50 USC 403 Ib) (3)
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lOP SIiEAET l::JMBRA Ib) (3) -P.L.
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Ib) (1) Ib) (3) -50 USC 403 Ib) (3)
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and he might have failed had he com
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Ib) (1) Ib) (3) -P.L. 86-36 Table 2
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--------------- - -- In 1953 a comm
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Ib) (1) Ib) (3) -50 USC 403 Ib) (3)
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Ib) (1) Ib) (3) -P.L. 86-36 Ib) (3)
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Canine continued to strengthen the
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~RA Arlington Hall and Nebraska Ave
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itselfwas established concluded tha
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hammered out an agreement which res
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Canine thought that Navy COMINTwas
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ofhis term as DIRNSA, it was rumore
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leap SECRET tJMBkA system, oversigh
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Ib) (1) Ib) (3) OGA lOP SECRET '='M
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Ib) (1) Ib) (3) -50 USC 403 Ib) (3)
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Ib) (1) Ib) (3) -50 USC 403 (3) -P.
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(3)-50 USC 403 (3)-18 USC 798 Ii:!"
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-------- ( 1) (3)-50 USC 403 (3)-18
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-------- (b) (1) (b) (3) OGA (1) (3
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,Ib) (1) !Ib) (3) !OGA ,I' L t6~i~~
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Ib) (1) Ib) (3) OGA Just\V~atwa~ la
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Ib) (1) Ib) (3) -50 USC 403 Ib) (3)
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Dulles was interested in HUMINT and
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the theater and on to the United St
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Ib) (1) Ib) (3) -50 USC 403 Ibl(3)-
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\ \ ( 1) (3)-50 USC 403 (3) -P.L. 8
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( 1) (3)-50 USC 403 (3) -P.L. 86-36
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\ ~ ( 1) (3)-50 USC 403 3) -P.L. 86
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------- ----j
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------- /
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OGA ( 1) ( 1) (3)-50 USC 403 (3) -P
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- -------- ~-
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-------- (1) Ib) (3)
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( 1) (3)-50 USC 403 3) -P.L. 86-36
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ASA PAC in the 1940s ASA's first p(
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~U~RA rather than to support tactic
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Ib) (1) Ib) (3) -50 USC 403 Ib) (3)
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The Navy site on AdakIsland in the
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All services showed an interest in
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intelligence collection. The best k
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- _ .. - ------ It began with an in
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Fort Meade would be regarded as a P
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Ib) (1) Ib) (3) -P.L. 86-36 Ib) (3)
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Chapter 7 The Eisenhower Reforms TH
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Ib) (3) -P.L. 86-36 The new NSCID m
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But this, said Baker, was not the w
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Ib) (1) Ib) (3) -P.L. 86-36 Ib) (3)
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Ib) (1) Ib) (3) OGA a special study
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Ib) (1) Ib) (3) -50 USC 403 Ib) (3)
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In that year, NSAEUR, over the stre
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------- / (1) Ib) (3) -50 USC 403 I
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Ib) (3) -P.L. 86-36 f9P SEeRE i ~BR
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--------------~~~~ concerns that NS
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competent authority...." Other comp
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Beginning in 1939, a series ofmagaz
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Entirely apart from the well-known
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The Petersen Case (b) (6) Joseph Sy
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Martin and Mitchell duringtheir pre
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equired considerable planning, and
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Ib) (3) -P.L. 86-36 ~U~RA 8. Davids
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64. Ibid. 65. Ibid. 66. Ibid. 67. I
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