American Cryptology during the Cold War, 1945-1989

Ein Haufen Zeug zum Lesen:

In response to a declassification request by the National Security Archive, the secretive National Security Agency has declassified large portions of a four-part “top-secret Umbra” study, American Cryptology during the Cold War.

The National Security Archive

  • Book I (pdf 9.5mb): The Struggle for Centralization, 1945-1960 (National Security Agency: Center for Cryptological History, 1995), Top Secret Umbra, Excised copy, pp. i-xvii and 1-155
  • Book I (pdf 9.2mb): The Struggle for Centralization, 1945-1960, pp. 157-287
  • Book II (pdf 11.9mb): Centralization Wins, 1960-1972 (National Security Agency: Center for Cryptological History, 1995), Top Secret Umbra, Excised copy, pp. 289-494
  • Book II (pdf 8mb): Centralization Wins, 1960-1972, pp. 495-652
  • Book III (pdf 8mb): Retrenchment and Reform, 1972-1980 (National Security Agency: Center for Cryptological History, 1998), Top Secret Umbra, Excised copy, pp. i-ix, and 1-116
  • Book III (pdf 6.1mb): Retrenchment and Reform, 1972-1980, pp. 117-262

via Bruce Schneier

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