XOR Cipher
Key
XOR Cipher is a type of additive cipher, an encryption algorithm that operates according to the principles:
- A 0 = A,
- A A = 0,
- A B = B A,
- (A B) C = A (B C),
- (B A) A = B 0 = B,
For example where denotes the exclusive disjunction (XOR) operation. This operation is sometimes called modulus 2 addition (or subtraction, which is identical). With this logic, a string of text can be encrypted by applying the bitwise XOR operator to every character using a given key. To decrypt the output, merely reapplying the XOR function with the key will remove the cipher.
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ADFGVX Cipher
ADFGVX Cipher is a transposition and substitution cipher used during World War I by the German Army. The name "ADFGVX" comes from the six possible letters used in the cipher: A, D, F, G, V, and X.
ADFGX Cipher
The ADFGX Cipher is a fractionating transposition cipher which combined a modified Polybius square with a single columnar transposition. It is closely related to the ADFGVX Cipher.