The Vigenère cipher (French pronunciation: [viʒnɛːʁ]) is a method of encrypting alphabetic text where each letter of the plaintext is encoded with a different Caesar cipher, whose increment is determined …

Invented by the French cryptologist Blaise de Vigenère in the 16th century, it is based on the use of a grid/table called a Vigenère square which allows for shifts of the letters according to the keyword.

Dec 19, 2025 · The cipher was invented in 1553 by the Italian cryptographer Giovan Battista Bellaso but for centuries was attributed to the 16th-century French cryptographer Blaise de Vigenère, who …

Encrypt text using the powerful Vigenère cipher with our free online tool. Features real-time encryption, key strength analysis, and educational resources.

In addition to the plaintext, the Vigenère cipher also requires a keyword, which is repeated so that the total length is equal to that of the plaintext. For example, suppose the plaintext is MICHIGAN …

Vigenère cipher: Encrypt and decrypt online Method of encrypting alphabetic text by using a series of interwoven Caesar ciphers based on the letters of a keyword. Though the 'chiffre indéchiffrable' is …

Dec 27, 2025 · A 16 th century French diplomat, Blaise de Vigenère, created a very simple cipher that is moderately difficult for any unintended parties to decipher. It is somewhat like a variable Caesar …

Jul 18, 2024 · The encryption of the original text is done using the Vigenère square or Vigenère table. The table consists of the alphabets written out 26 times in different rows, each alphabet shifted …

The creation of the Vigenère cipher in 1553 marked a major development in cryptography. It’s the best-known example of a polyalphabetic cipher, and its structure helped to innovate a new generation of …

The Vigenère cipher is a method of encrypting messages by using a series of different Caesar ciphers based on the letters of a particular keyword. The Vigenère cipher is more powerful than a single …