国家数学与交叉科学中心合肥分中心报告会

报告题目：How Polish mathematicians broke German codes in 1932

报 告 人：William Casselman 教授
          University of British Columbia

 
报告时间：2013年4月23日下午16:00-17:00

报告地点：管理科研楼1518室

摘要：Experience in the first World War showed that military communications in future wars would be transmitted largely by radio, and would therefore be open to interception by an enemy. This required efficient and complex encryption. In about 1930 the Germans introduced ENIGMA machines for this purpose. But already in 1932 Polish mathematicians had figured out how to break the German codes, and by purely mathematical techniques involving some elementary facts about permutations. I'll explain how ENIGMA machines worked, why basic machine design and German usage had fatal flaws, and how the Poles succeeded.

主办单位：中国科学技术大学数学科学学院
          国家数学与交叉科学中心合肥分中心

       
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