If the message was right shifted by 4, each A would become E, and each S would become W. The Caesar cipher encrypts by shifting each letter in the plaintext up or down a certain number of places in the alphabet.
The Vigenère cipher is a polyalphabetic substitution cipher that is a natural evolution of the Caesar cipher. Standard mode is the most common, but if you don't know the mode, you should try both. Note: Auto Solve will try in the mode you select (Standard Mode or Autokey mode). In case a specific letter (for instance X) is used as word separator, set it to Substitute. In most cases it should be set to Automatic.
Iterations: The more iterations, the more time will be spent when auto solving a cipher.Min/Max Key Length: This is the search range for keys when auto solving a cipher.Language: The language determines the letters and statistics used for decoding, encoding and auto solving.It eliminates the periodic repeats otherwise seen in polyalphabetic ciphers. Standard Mode v s Autokey Variant: The Autokey mode is a stronger variant of the cipher, where letters of the plaintext become part of the key.If you don't have any key, you can try to auto solve (break) your cipher. You can decode (decrypt) or encode (encrypt) your message with your key.
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