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Fritz Menzer
Ostwin Fritz Menzer (6 April 1908 in Herrndorf near Niederschöna in Saxony between Chemnitz and Dresden – 25 October 2005 in Bad Homburg vor der Höhe) was a German cryptologist, who before and during World War II, worked in the In 7/VI, the Wehrmacht signals intelligence agency, later working in ( OKW/ Chi) that was the cipher bureau of the supreme command of the Nazi party, and later in Abwehr, the military intelligence service of the Wehrmacht. He was involved in the development and production of cryptographic devices and procedures, as well as the security control of their own methods. Life At the age of 18, he joined the Reichswehr as a mechanic and was assigned to a motorized battalion with a location in Leipzig. Menzer had already developed an interest in cryptography and was granted a patent for a "combined measuring apparatus for angles and lengths, the data rom which wasexpressed in an enciphered form in a four-place combination of letters". After 12 years in t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
C-36 (cipher Machine)
The C-35 and C-36 were cipher machines designed by Swedish cryptographer Boris Hagelin in the 1930s. These were the first of Hagelin's cipher machines to feature the pin-and-lug mechanism. A later machine in the same series, the C-38, was designated CSP-1500 by the United States Navy and M-209 by the United States military, who used it extensively. In 1934, the French military approached Hagelin to design a printing, pocket-size cipher machine; Hagelin carved a piece of wood to outline the dimensions of a machine that would fit into a pocket. He adapted one of his previous inventions from three years earlier: an adding device designed for use in vending machines, and combined it with the pinwheel mechanism from an earlier cipher machine (the B-21). The French ordered 5,000 in 1935. Italy and the USA declined the machine, although both would later use the M-209 / C-38. Completely mechanical, the C-35 machine measured 6 × 4.5 × 2 inches, and weighed less than 3 pounds. A revised ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Autokey Cipher
An autokey cipher (also known as the autoclave cipher) is a cipher that incorporates the message (the plaintext) into the key. The key is generated from the message in some automated fashion, sometimes by selecting certain letters from the text or, more commonly, by adding a short ''primer key'' to the front of the message. There are two forms of autokey cipher: ''key-autokey'' and ''text-autokey'' ciphers. A key-autokey cipher uses previous members of the keystream to determine the next element in the keystream. A text-autokey uses the previous message text to determine the next element in the keystream. In modern cryptography, self-synchronising stream ciphers are autokey ciphers. History This cipher was invented in 1586 by Blaise de Vigenère with a reciprocal table of ten alphabets. Vigenère's version used an agreed-upon letter of the alphabet as a primer, making the key by writing down that letter and then the rest of the message. More popular autokeys use a tabula recta, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Substitution Cipher
In cryptography, a substitution cipher is a method of encrypting in which units of plaintext are replaced with the ciphertext, in a defined manner, with the help of a key; the "units" may be single letters (the most common), pairs of letters, triplets of letters, mixtures of the above, and so forth. The receiver deciphers the text by performing the inverse substitution process to extract the original message. Substitution ciphers can be compared with transposition ciphers. In a transposition cipher, the units of the plaintext are rearranged in a different and usually quite complex order, but the units themselves are left unchanged. By contrast, in a substitution cipher, the units of the plaintext are retained in the same sequence in the ciphertext, but the units themselves are altered. There are a number of different types of substitution cipher. If the cipher operates on single letters, it is termed a simple substitution cipher; a cipher that operates on larger groups of letters ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Transposition Cipher
In cryptography, a transposition cipher is a method of encryption which scrambles the positions of characters (''transposition'') without changing the characters themselves. Transposition ciphers reorder units of plaintext (typically characters or groups of characters) according to a regular system to produce a ciphertext which is a permutation of the plaintext. They differ from substitution ciphers, which do not change the position of units of plaintext but instead change the units themselves. Despite the difference between transposition and substitution operations, they are often combined, as in historical ciphers like the ADFGVX cipher or complex high-quality encryption methods like the modern Advanced Encryption Standard (AES). General principle Plaintexts can be rearranged into a ciphertext using a key, scrambling the order of characters like the shuffled pieces of a jigsaw puzzle. The resulting message is hard to decipher without the key because there are many ways the char ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Procedure 40
Procedure may refer to: * Medical procedure * Instructions or recipes, a set of commands that show how to achieve some result, such as to prepare or make something * Procedure (business), specifying parts of a business process * Standard operating procedure, a step-by-step instruction to achieve some result, used in industry and military * Legal procedure, the body of law and rules used in the administration of justice in the court system, including: ** Civil procedure ** Criminal procedure ** Administrative procedure * Parliamentary procedure, a set of rules governing meetings * Procedure (computer science), also termed a subroutine, function, or subprogram ** Stored procedure, a subroutine in the data dictionary of a relational database * The Procedure, an American hardcore band See also * Procedural (other) Procedural may refer to: *Procedural generation, a term used in computer graphics applications *Procedural knowledge, the knowledge exercised in the perfor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Procedure 62
Procedure may refer to: * Medical procedure * Instructions or recipes, a set of commands that show how to achieve some result, such as to prepare or make something * Procedure (business), specifying parts of a business process * Standard operating procedure, a step-by-step instruction to achieve some result, used in industry and military * Legal procedure, the body of law and rules used in the administration of justice in the court system, including: ** Civil procedure ** Criminal procedure ** Administrative procedure * Parliamentary procedure, a set of rules governing meetings * Procedure (computer science), also termed a subroutine, function, or subprogram ** Stored procedure, a subroutine in the data dictionary of a relational database * The Procedure, an American hardcore band See also * Procedural (other) Procedural may refer to: *Procedural generation, a term used in computer graphics applications *Procedural knowledge, the knowledge exercised in the perfor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ABC Schlüssel
ABC are the first three letters of the Latin script known as the alphabet. ABC or abc may also refer to: Arts, entertainment, and media Broadcasting * American Broadcasting Company, a commercial U.S. TV broadcaster ** Disney–ABC Television Group, the former name of the parent organization of ABC * Australian Broadcasting Corporation, one of the national publicly funded broadcasters of Australia ** ABC Television (Australian TV network), the national television network of the Australian Broadcasting Corporation ***ABC TV (Australian TV channel), the flagship TV station of the Australian Broadcasting Corporation ***ABC Canberra (TV station), Canberra, and other ABC TV local stations in state capitals *** ABC Australia (Southeast Asian TV channel), an international pay TV channel * ABC Radio (other), various radio stations including the American and Australian ABCs * Associated Broadcasting Corporation, one of the former names of TV5 Network, Inc., a Philippine televi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wilhelm Canaris
Wilhelm Franz Canaris (1 January 1887 – 9 April 1945) was a German admiral and the chief of the '' Abwehr'' (the German military-intelligence service) from 1935 to 1944. Canaris was initially a supporter of Adolf Hitler, and the Nazi regime. However, following the German invasion of Poland in 1939, Canaris turned against Hitler and committed acts of both passive and active resistance during the war. Being the head of Nazi Germany's military-intelligence agency, he was in a key position to participate in resistance. As the war turned against Germany, Canaris and other military officers expanded their clandestine opposition to the leadership of Nazi Germany. By 1945, his acts of resistance and sabotage against the Nazi regime came to light and Canaris was executed in Flossenbürg concentration camp for high treason as the Allied forces advanced through Southern Germany. Early life Canaris was born on 1 January 1887 in Aplerbeck (now a part of Dortmund) in Westphal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reich Security Main Office
The Reich Security Main Office (german: Reichssicherheitshauptamt or RSHA) was an organization under Heinrich Himmler in his dual capacity as ''Chef der Deutschen Polizei'' (Chief of German Police) and ''Reichsführer-SS'', the head of the Nazi Party's ''Schutzstaffel'' (SS). The organization's stated duty was to fight all "enemies of the Reich" inside and outside the borders of Nazi Germany. Formation and development Himmler established the RSHA on 27 September 1939. His assumption of control over all security and police forces in Germany was a significant factor in the growth in power of the Nazi state. With the formation of the RSHA, Himmler combined under one roof the Nazi Party's ''Sicherheitsdienst'' (SD; SS intelligence service) with the '' Sicherheitspolizei'' (SiPo; "Security Police"), which was nominally under the Interior Ministry. The SiPo was composed of two sub-departments, the ''Geheime Staatspolizei'' (Gestapo; "Secret State Police") and the ''Kriminalpolize ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Beamter
The German civil servants called ' (men, singular ', more commonly ') or ' (women, singular ') have a privileged legal status compared to other German public employees (called '), who are generally subject to the same laws and regulations as employees in the private sector. For example, the state can only fire ''Beamte'' if they commit a felony. The tradition of classifying only some public employees as dates back to the "enlightened rule" of monarchs practised in 18th-century Prussia and other German states. These states did not accept "radical" concepts such as democracy or popular sovereignty, but they did try to professionalise their public services and to reduce corruption and favouritism. The idea was that whoever represents the state by undertaking official duties which only the state may legally provide ('), such as issuing official documents, teaching state-approved curricula to students, preaching in state-approved churches, or making any other kind of official decisio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
