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.

The Vigenère cipher is a classic cipher that uses a repeating keyword to shift letters in the plaintext. This is a complete guide to the Vigenère cipher with an easy-to-use tool for using it.

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 …

Nov 4, 2025 · How are the letters encrypted and decrypted using the Vigenère cipher? What methods can be used to break or decode messages encrypted with the Vigenère cipher?

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

The Vigenère Cipher Encryption and Decryption cipher is simple and easy to understand and implement. However, for nearly three centuries the Vigenère cipher had not been broken until Friedrich W. …