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2. Vigenère cipher - Wikipedia

   en.wikipedia.org/wiki/Vigenère_cipher

   Despite the Vigenère cipher's apparent strength, it never became widely used throughout Europe. The Gronsfeld cipher is a variant attributed by Gaspar Schott to Count Gronsfeld (Josse Maximilaan van Gronsveld né van Bronckhorst) but was actually used much earlier by an ambassador of Duke of Mantua in 1560s-1570s. It is identical to the ...

3. Kasiski examination - Wikipedia

   en.wikipedia.org/wiki/Kasiski_examination

   Kasiski actually used "superimposition" to solve the Vigenère cipher. He started by finding the key length, as above. Then he took multiple copies of the message and laid them one-above-another, each one shifted left by the length of the key. Kasiski then observed that each column was made up of letters encrypted with a single alphabet. His ...

4. Giovan Battista Bellaso - Wikipedia

   en.wikipedia.org/wiki/Giovan_Battista_Bellaso

   It was Giovan Battista Bellaso who first suggested identifying the alphabets by means of an agreed-upon countersign or keyword off-line. He also taught various ways of mixing the cipher alphabets in order to free the correspondents from the need to exchange disks or prescribed tables.

5. 11 Best Free Website Builders - AOL

   www.aol.com/finance/11-best-free-website...

   The free version does not have ads but the website will be hosted on the webflow.io domain. SITE123 It is one of the best free website builders for online stores, blogs or creating a landing page.

6. Timeline of cryptography - Wikipedia

   en.wikipedia.org/wiki/Timeline_of_cryptography

   This is a specialized machine for cipher-breaking, not a general-purpose calculator or computer. December 1943 – The Colossus computer was built, by Thomas Flowers at The Post Office Research Laboratories in London, to crack the German Lorenz cipher (SZ42). Colossus was used at Bletchley Park during World War II – as a successor to April's ...

7. Japanese cryptology from the 1500s to Meiji - Wikipedia

   en.wikipedia.org/wiki/Japanese_cryptology_from...

   The Vigenère cipher is probably the most famous example of a polyalphabetic substitution cipher. [21] The famous cipher machines of World War II encipher in a polyalphabetic system. Their strength came from the enormous number of well-mixed alphabets that they used and the fairly random way of switching between them.