出典:Wikipedia
出典:『Wikipedia』 (2011/06/01 14:18 UTC 版)
In the history of cryptography, the ECM Mark II was a rotor machine used by the United States from World War II until the 1950s. The machine was also known as the SIGABA or Converter M-134 by the Army, or CSP-888/889 by the Navy, and a modified Navy version was termed the CSP-2900.