1913 the wheel cipher gets re-invented as a strip
1917
- an AT&T-employee, Gilbert S. Vernam, invents a polyalphabetic cipher machine that works with random-keys
1918 the Germans start using the ADFGVX-system, that later gets later by the French Georges Painvin
- Arthur Scherbius patents a ciphering machine and tries to sell it to the German Military, but is rejected
1919 Hugo Alexander Koch invents a rotor cipher machine
1921 the Hebern Electric Code, a company producing electro-mechanical cipher machines, is founded
1923 Arthur Scherbius founds an enterprise to construct and finally sell his
late 1920's/30's more and more it is criminals who use cryptology for their purposes (e.g. for smuggling). Elizabeth Smith Friedman deciphers the codes of rum-smugglers during prohibition regularly
1929 Lester S. Hill publishes his book Cryptography in an Algebraic Alphabet, which contains enciphered parts
1933-1945 the Germans make the Enigma machine its cryptographic main-tool, which is broken by the Poles Marian Rejewski, Gordon Welchman and Alan Turing's team at Bletchley Park in England in 1939
1937 the Japanese invent their so called Purple machine with the help of Herbert O. Yardley. The machine works with telephone stepping relays. It is broken by a team of
1930's the Sigaba machine is invented in the USA, either by W.F. Friedman or his colleague Frank Rowlett
- at the same time the British develop the Typex machine, similar to the German Enigma machine
1943 Colossus, a code breaking computer is put into action at Bletchley Park
1943-1980 the cryptographic Venona Project, done by the NSA, is taking place for a longer period than any other program of that type
1948 Shannon, one of the first modern cryptographers bringing mathematics into cryptography, publishes his book A Communications Theory of Secrecy Systems
1960's the Communications-Electronics Security Group (= CESG) is founded as a section of Government Communications Headquarters (= GCHQ)
late 1960's the IBM Watson Research Lab develops the Lucifer cipher
1969 James Ellis develops a system of separate public-keys and private-keys
TEXTBLOCK 1/1 // URL: http://world-information.org/wio/infostructure/100437611776/100438658921
b. April 14, 1907, Port-au-Prince, Haiti
d. April 21, 1971, Port-au-Prince
By name PAPA DOC, president of Haiti whose 14-year regime was of unprecedented duration in that country. A supporter of President Dumarsais Estimé, Duvalier was appointed director general of the National Public Health Service in 1946. He was appointed underminister of labour in 1948 and the following year became minister of public health and labour, a post that he retained until May 10, 1950, when President Estimé was overthrown by a military junta under Paul E. Magloire, who was subsequently elected president. By 1954 he had become the central opposition figure and went underground. Duvalier was elected president in September 1957. Setting about to consolidate his power, he reduced the size of the army and organized the Tontons Macoutes ("Bogeymen"), a private force responsible for terrorizing and assassinating alleged foes of the regime. Late in 1963 Duvalier moved further toward an absolutist regime, promoting a cult of his person as the semi divine embodiment of the Haitian nation. In April 1964 he was declared president for life. Although diplomatically almost completely isolated, excommunicated by the Vatican until 1966 for harassing the clergy, and threatened by conspiracies against him, Duvalier was able to stay in power longer than any of his predecessors.