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Edward Fokczyński
Edward Fokczyński was one of the four directors of the AVA Radio Company, an electronics firm established in Warsaw, Poland, in 1929. AVA produced radio equipment for the Polish General Staff's Biuro Szyfrów, Cipher Bureau, which was responsible for the radio communications of the Second Department of Polish General Staff, General Staff's Intelligence Section (''Oddział II''). After the Cipher Bureau's mathematician-cryptologist Marian Rejewski in December 1932 deduced the wiring in the Germany, German Enigma machine, Enigma rotor cipher machine, AVA produced Enigma "doubles" and all the electro-mechanical equipment that was designed at the Cipher Bureau to facilitate decryption of the German ciphers. Life Fokczyński was an autodidact whose formal education did not extend beyond four grades of primary school at Pabianice. He worked there as a journeyman locksmith before moving in 1913 to Łódź, where he found a job in the electrical engineering firm of Knapik and Company. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Łódź
Łódź is a city in central Poland and a former industrial centre. It is the capital of Łódź Voivodeship, and is located south-west of Warsaw. Łódź has a population of 655,279, making it the country's List of cities and towns in Poland, fourth largest city. Łódź first appears in records in the 14th century. It was granted city rights, town rights in 1423 by the Polish King Władysław II Jagiełło and it remained a private town of the Kuyavian bishops and clergy until the late 18th century. In the Second Partition of Poland in 1793, Łódź was annexed to Kingdom of Prussia, Prussia before becoming part of the Napoleonic Duchy of Warsaw; the city joined Congress Poland, a Russian Empire, Russian client state, at the 1815 Congress of Vienna. The Second Industrial Revolution (from 1850) brought rapid growth in textile manufacturing and in population owing to the inflow of migrants, a sizable part of which were Jews and Germans. Ever since the industrialization of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lacida
The Lacida, also called LCD, was a Polish rotor cipher machine. It was designed and produced before World War II by Poland's Cipher Bureau for prospective wartime use by Polish military higher commands. Lacida was also known as Crypto Machine during a TNMOC Virtual Talk. History The machine's name derived from the surname initials of Gwido ''La''nger, Maksymilian ''Ci''ężki and Ludomir ''Da''nilewicz and / or his younger brother, Leonard ''Da''nilewicz. It was built in Warsaw, to the Cipher Bureau's specifications, by the AVA Radio Company. In anticipation of war, before the September 1939 invasion of Poland, two LCDs were sent to France. From spring 1941, an LCD was used by the Polish ''Team Z'' at the Polish-, Spanish- and French-manned Cadix radio-intelligence and decryption center at Uzès, near France's Mediterranean coast. Prior to the machine's production, it had never been subjected to rigorous decryption attempts. Now it was decided to remedy this oversight ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
World War II
World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the world's countries participated, with many nations mobilising all resources in pursuit of total war. Tanks in World War II, Tanks and Air warfare of World War II, aircraft played major roles, enabling the strategic bombing of cities and delivery of the Atomic bombings of Hiroshima and Nagasaki, first and only nuclear weapons ever used in war. World War II is the List of wars by death toll, deadliest conflict in history, causing World War II casualties, the death of 70 to 85 million people, more than half of whom were civilians. Millions died in genocides, including the Holocaust, and by massacres, starvation, and disease. After the Allied victory, Allied-occupied Germany, Germany, Allied-occupied Austria, Austria, Occupation of Japan, Japan, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ultra (cryptography)
Ultra was the designation adopted by United Kingdom, British military intelligence in June 1941 for wartime signals intelligence obtained by breaking high-level encrypted enemy radio and teleprinter communications at the Government Code and Cypher School (GC&CS) at Bletchley Park. ''Ultra'' eventually became the standard designation among the western Allies of World War II, Allies for all such intelligence. The name arose because the intelligence obtained was considered more important than that designated by the highest British Classified information, security classification then used (''Most Secret'' and so was regarded as being ''Ultra Secret''. Several other cryptonyms had been used for such intelligence. The code name "Boniface" was used as a cover name for ''Ultra''. In order to ensure that the successful code-breaking did not become apparent to the Germans, British intelligence created a fictional MI6 master spy, Boniface, who controlled a fictional series of agents throug ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Allies In World War II
The Allies, formally referred to as the United Nations from 1942, were an international military coalition formed during World War II (1939–1945) to oppose the Axis powers. Its principal members were the " Big Four" – the United Kingdom, United States, Soviet Union, and China. Membership in the Allies varied during the course of the war. When the conflict broke out on 1 September 1939, the Allied coalition consisted of the United Kingdom, France, and Poland, as well as their respective dependencies, such as British India. They were joined by the independent dominions of the British Commonwealth: Canada, Australia, New Zealand and South Africa. Consequently, the initial alliance resembled that of the First World War. As Axis forces began invading northern Europe and the Balkans, the Allies added the Netherlands, Belgium, Norway, Greece, and Yugoslavia. The Soviet Union, which initially had a nonaggression pact with Germany and participated in its invasion of Poland, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cipher
In cryptography, a cipher (or cypher) is an algorithm for performing encryption or decryption—a series of well-defined steps that can be followed as a procedure. An alternative, less common term is ''encipherment''. To encipher or encode is to convert information into cipher or code. In common parlance, "cipher" is synonymous with "code (cryptography), code", as they are both a set of steps that encrypt a message; however, the concepts are distinct in cryptography, especially classical cryptography. Codes generally substitute different length strings of characters in the output, while ciphers generally substitute the same number of characters as are input. A code maps one meaning with another. Words and phrases can be coded as letters or numbers. Codes typically have direct meaning from input to key. Codes primarily function to save time. Ciphers are algorithmic. The given input must follow the cipher's process to be solved. Ciphers are commonly used to encrypt written info ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cost-plus Contract
A cost-plus contract, also termed a cost plus contract, is a contract such that a contractor is paid for all of its allowed expenses, ''plus'' an additional payment to allow for risk and incentive sharing.Cost-Plus Contracts Cost-reimbursement contracts contrast with s, in which the contractor is paid a negotiated amount regardless of incurred expenses. Histo ...
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Mokotów
Mokotów () is a district of Warsaw, the capital city of Poland. It is densely populated, and hosts many companies and foreign embassies. Only a small part of the district is lightly industrialised (''Służewiec Przemysłowy''), while the majority is full of parks and green areas ( Mokotów Field). Although the area has been populated at least since the early Middle Ages, Mokotów was not incorporated into Warsaw until 1916. The origins of the area's name are unclear, first appearing as the village of Mokotowo in documents from the year 1367. It is hypothesised to have come from the name of a German owner of the village, who called himself Mokoto or Mokot, although no exact reference to such an individual has been found in historical records. In the 18th century, Moktów developed as a place where mansions, villas and palaces of the magnates and wealthy bourgeoisie were built. However, most of the area was urbanised and redeveloped throughout the 1930s in the style of modernism. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saxon Palace
The Saxon Palace () in Warsaw, Poland, was a historic architectural landmark located on Piłsudski Square in the heart of the Polish capital. Originally built in the 17th century as a noble residence, it was later expanded and transformed into a royal palace under the Saxon House of Wettin in the 18th century. The building underwent several modifications over the centuries, most notably in the 19th century when it was redesigned in the neoclassicalstyle with a distinctive colonnade. The palace played a significant role in Polish history, serving as a military and government headquarters, including housing the General Staff of the Polish Army in the interwar period. It was also the site where Polish cryptologists first broke the German Enigma Cipher in 1932. Destroyed by the Germans during the Second World War, only a small section of its colonnade survived, which now houses the Tomb of the Unknown Soldier. Plans for the palace’s reconstruction have been discussed since the pos ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
New World Street
''Nowy Świat'' (), known in English as New World Street, is one of the main historic thoroughfares of Warsaw, Poland. It comprises part of the Royal Route (''Trakt królewski'') that extends from Warsaw's Royal Castle and Old Town, south to King John III Sobieski's 17th-century royal residence at Wilanów. Geography ''Nowy Świat'' runs from Three Crosses Square northwards, intersecting Jerusalem Avenue and Świętokrzyska Street (Holy Cross Street). Near the Warsaw University campus and the Nicolaus Copernicus monument it changes into ''Krakowskie Przedmieście'' (Cracow Suburb Street), which then runs all the way to the Royal Castle at Castle Square. At its southern end, at Three Crosses Square, ''Nowy Świat'' changes into Ujazdów Avenue, which changes into Belweder Street, which becomes Sobieski Street as it continues coursing south, ultimately to arrive at Wilanów. History Until the 16th century, ''Nowy Świat'' was a main road leading to numerous aristo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maksymilian Ciężki
Maksymilian Ciężki (; Samter, Province of Posen (now Szamotuły, Poland), 24 November 1898 – 9 November 1951 in London, England) was the head of the Polish Cipher Bureau's German section (''BS–4'') in the 1930s, during which time—from December 1932—the Bureau decrypted German Enigma messages. During the German invasion of Poland in September 1939, Ciężki escaped to France to continue work on breaking Enigma ciphers. In 1943 he was captured by the Germans and interned in an S.S. concentration camp. Career In the 1930s, Ciężki, as an army captain, was chief of the Polish General Staff Cipher Bureau's German section (''Biuro Szyfrów-4'', abbreviated ''BS-4''). This section "broke" ( decrypted) German Enigma machine ciphers. Ciężki was also deputy to the Cipher Bureau's chief, Major (later, Lt. Col.) Gwido Langer, and in addition supervised the radio-intercept stations at Starogard in the Polish Corridor, at Poznań in western Poland, and at Krzes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
