000			01364nam a22001817a 4500
001			47384
003			OSt
005			20240820132702.0
008			240820b |||||||| |||| 00| 0 eng d
100			_aEASTER David
245			_aState Department cipher machines and communications security in the early Cold War, 1944–1965/ _cDavid Easter
260			_c2024
520			_aFrom 1944 the State Department attempted to improve its communications security by creating a Division of Cryptography and mechanising the encryption process. This article assesses the effectiveness of these reforms and shows that State’s new cipher equipment had cryptographic vulnerabilities. Moreover, the department was unable to maintain physical security at the Moscow embassy and through espionage and technical surveillance the KGB broke the ciphers and read American communications. The paper concludes by analysing the impact of this security failure, including the claim that intercepted messages influenced Stalin’s decision to approve the North Korean invasion of South Korea in 1950.
650			_aSECURITY FAILURE _xCOMMUNICATIONS SECURITY
773			_gIntelligence and National Security: Volume 39, Number 4, June 2024, pages: 620-635
856			_uhttps://www.tandfonline.com/doi/full/10.1080/02684527.2023.2269512 _zClick here for full text
942			_2ddc _cARTICLE _n0
999			_c47384 _d47384