The Vigenère cipher gained a reputation for being exceptionally strong.

This technique is used to cryptanalysis the Vigenère cipher, for example.

The running key variant of the Vigenère cipher was also considered unbreakable at one time.

Many people have tried to implement encryption schemes that are essentially Vigenère ciphers.

Despite the Vigenère cipher's apparent strength it never became widely used throughout Europe.

It describes what is known as a Vigenère cipher, a well-known scheme in cryptography.

This is the reverse of the Vigenère cipher, which here enables decryption rather than encryption.

In 1917, Scientific American described the Vigenère cipher as "impossible of translation".

The Vigenère cipher function is essentially modulo arithmetic, and thus commutative.

The Vigenère cipher is a well-known example of a cryptographic scheme that uses a tableau.

The Russians used an overly complicated version of the Vigenère Cipher.

Kasiski actually used "superimposition" to solve the Vigenère cipher.

The Vigenère cipher consists of several Caesar ciphers in sequence with different shift values.

Vigenère Cipher encryption and decryption program (browser version, English only)

Friedrich Kasiski was the first to publish a general method of deciphering a Vigenère cipher.

Dawson sought out computer forensic specialists Inforenz, who recognised the encryption as the Vigenère cipher.

However, using the Vigenère cipher, can be enciphered as different ciphertext letters at different points in the message, thus defeating simple frequency analysis.

However, unlike a Vigenère cipher, if we have to extend our message, we don't repeat the key; we just continue on from the key text.

The Vigenère cipher is probably the best-known example of a polyalphabetic cipher, though it is a simplified special case.

The Vigenère cipher is simple enough to be a field cipher if it is used in conjunction with cipher disks.

In theory, there is some overlap in these definitions; one could conceivably consider a Vigenère cipher with an eight-letter key to be an octographic substitution.

Many ciphers were only partial implementations of Alberti's, and so were easier to break than they might have been (e.g. the Vigenère cipher).

Johannes Trithemius, in his work Poligraphia, invented the tabula recta, a critical component of the Vigenère cipher.

In the polyalphabetic Vigenère cipher, encryption uses a key word, which controls letter substitution depending on which letter of the key word is used.

The Vigenère cipher is a method of encrypting alphabetic text by using a series of different Caesar ciphers based on the letters of a keyword.