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Caesar Cipher Encoder , Decoder , Solver

Caesar cipher, as one of the oldest symmetric encryption systems, encodes and decodes text by moving letters by a certain number of digits. When encoding, all letters in the plain text move a fixed number backward (or forward) on the alphabet and then rep

 Caesar Cipher:

       Caesar Cipher was first used by the ancient Roman military commander Gaius Julius Caesar to transmit encrypted information in the army, so it is called the Caesar cipher.
       This is a displacement encryption method. Only 26 (upper and lower case) letters are displacement encrypted. The rules are quite simple and easy to be cracked. The following is a comparison of moving the plaintext alphabet back to 3 digits:
       Plaintext alphabet   X    Y    Z    A    B    C    D    E    F    G    H    I    J    K    L    M    N    O    P    Q    R    S    T    U    V    W
       Cipher alphabet      A    B    C    D    E    F    G    H    I    J    K    L    M    N    O    P    Q    R    S    T    U    V    W    X    Y    Z
       Then A becomes D, B becomes E, and Z becomes C.
       The letters can be moved up to 25 digits (by alphabet). Usually it is moving backwards. If you want to move forward by 1 bit, it is equivalent to moving backward by 25 bits. The displacement is selected as 25 bits.

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