Enigma Variations: an Extended Family of Machines

نویسندگان

  • David H. Hamer
  • Geoff Sullivan
  • Frode Weierud
چکیده

Several previously unknown models of the Enigma machine have recently been discovered through archive research and inspection of machines in museum collections. The present knowledge about these machines, including both use and technical details, is presented. The paper shows that the Enigma was not one machine, but rather a family of machines built upon the principle of wired rotors with a fixed or rotatable reflector. It also describes simulations in software for some of these machines.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Some improvements in fuzzy turing machines

In this paper, we improve some previous definitions of fuzzy-type Turing machines to obtain degrees of accepting and rejecting in a computational manner. We apply a BFS-based search method and some level’s upper bounds to propose a computational process in calculating degrees of accepting and rejecting. Next, we introduce the class of Extended Fuzzy Turing Machines equipped with indeterminacy s...

متن کامل

Spanish Enigma: A History of the Enigma in Spain

The presentation of a brief study of the use of Enigma Machines in Spain, during the Spanish Civil War (1936-1939) and later, until their final replacement.

متن کامل

The Continuity of the Extended Family Structure within Contemporary Single-Family Houses Case Study: Afghan Immigrant Households in Iran

This research is aimed at reviving the positive aspects of extended family households. The impacts of extended family living on housing design are studied in two steps. In the first step, the history and precedents of extended family housing are explored in both traditional and modern societies. Aside from courtyard houses, numerous other models of extended family housing are introduced and it ...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:
  • Cryptologia

دوره 22  شماره 

صفحات  -

تاریخ انتشار 1998