Caesar Shift
The Caesar Shift is a type of substitution cipher originally used by Julius Caesar to protect messages of military significance. It relies on taking the alphabet and "shifting" letters to the right or left, based on the typical alphabetic order. To use this cipher, enter a number in the "Shift number" space.
Polybius Square
The Polybius Square is a cipher that is achieved by arranging a typical alphabet into a grid. Each letter is represented through a coordinate. For example, in the above table, the letter "B" would be represented by the numerical pair "21". Use only letters and spaces for encoding messages, and numbers and spaces for decoding messages. No symbols or characters will be accepted for encrypting or decrypting messages.
Substitution Cipher
The Substitution Cipher requires a standard alphabet and a substitution alphabet. Letters from the standard alphabet will be transposed to the standard alphabet. This cipher requires that the recipient have the substitution alphabet, otherwise it will be difficult for them to decode the message.To use this cipher, enter 26 characters in the "Alphabet key" space.