Note the vital distinction: the plaintext is encrypted using itself (shifted backward) as the key.
In a standard Vigenère cipher, a keyword (e.g., "KING") is repeated to match the length of the plaintext:
Auto-key Crack Only Updated Online
Note the vital distinction: the plaintext is encrypted using itself (shifted backward) as the key.
In a standard Vigenère cipher, a keyword (e.g., "KING") is repeated to match the length of the plaintext: auto-key crack only