Vigenère Cypher
Vigenère may refer to: *Blaise de Vigenère, a 16th-century French cryptographer *The Vigenère cipher The Vigenère cipher () is a method of encryption, encrypting alphabetic text by using a series of interwoven Caesar ciphers, based on the letters of a keyword. It employs a form of polyalphabetic cipher, polyalphabetic substitution. First desc ...

Blaise De Vigenère
Blaise de Vigenère (5 April 1523 – 19 February 1596) () was a French diplomat, cryptographer, translator and alchemist. Biography Vigenère was born into a respectable family in the village of Saint-Pourçain. His mother, Jean, arranged for him to have a classical education in France. He studied Greek, Hebrew and Italian under Adrianus Turnebus and Jean Dorat. At age 26 he entered the diplomatic service and remained there for 30 years, retiring in 1570. Five years into his career he accompanied the French envoy Louis Adhémar de Grignan to the Diet of Worms as a junior secretary. At age 24, he entered the service of the Duke of Nevers as his secretary, a position he held until the deaths of the Duke and his son in 1562. He also served as a secretary to Henry III. In 1549 he visited Rome on a two-year diplomatic mission, and again in 1566. On both trips, he read books about cryptography and came in contact with cryptologists. When Vigenère retired aged 47, he donat ...
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