XOR Cipher
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The document describes the XOR cipher, which encrypts text by applying the bitwise XOR operator to each character using a key. To decrypt, reapplying the XOR function with the same key removes the cipher. An example shows encrypting the plaintext "Z" with the key "3" to produce the ciphertext "Y".
XOR Cipher
- 1. 1 XOR Cipher: denotes the Exclusive OR operation,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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- 4. 4 Binary 128 64 32 16 8 4 2 1 Plain text = Z 0 1 0 1 1 0 1 0 Key = 3 0 0 0 0 0 0 1 1 Cipher text= Y 0 1 0 1 1 0 0 1
- 5. 5 Example 2: