The 2016 Academy Awards Could Change Everything â UPDATE. BEVERLY HILLS, CA - JANUARY 10: Actor Leonardo DiCaprio, winner of Best Performance by an Actor in a Motion Picture - Drama for 'The Revenant,' poses in the press room during the 73rd Annual Golden Globe Awards held at the Beverly Hilton Hotel on January 10, 2016 in Beverly Hills, California.
The VigenÃ¨re Cipher. The VigenÃ¨re cipher, was invented by a Frenchman, Blaise de VigenÃ¨re in the 16th century. It is a polyalphabetic cipher because it uses two or more cipher alphabets to encrypt the data. In other words, the letters in the VigenÃ¨re cipher are shifted by different amounts, normally done using a word or phrase as the encryption key .
Ciphertext is also known as encrypted or encoded information because it contains a form of the original plaintext that is unreadable by a human or computer without the proper cipher to decrypt it.Decryption, the inverse of encryption, is the process of turning ciphertext into readable plaintext.Ciphertext is not to be confused with codetext because the latter is a result of a code, not a cipher.oth Alice and Bob must know the choice of key, , or else the ciphertext is useless. Once the message is encrypted as ciphertext, Alice can safely transmit it to Bob (assuming no one else knows the key). In order to read Alice's message, Bob must decrypt the ciphertext using which is known as the decryption cipher, .