About XOR Encryption
XOR Encryption Online is a logical operation used in Boolean Algebra. It compares the two bits, and returns:
If the bits are different, then 1 is true
If the bits are identical, then the answer is 0.
How XOR Encryption works?
XOR encryption can be used with symmetric ciphers, such as AES, where the same key is employed for encryption and decryption. The XOR is performed bit-by-bit on the plaintext.
Example: Encrypting ‘xor’ with the key ‘key
In binary:
- Plaintext (xor:)
01111000 01101111 - Key (key)
01001011-01100101-01111001 - XOR Result:
00110011 00001010 00001011
Decryption is as simple as applying XOR between the encrypted text, and the key. XOR can be reversed, which means the same process can encrypt and decrypt data.
What if the plaintext is shorter than the key?
- The key is repeated if the plaintext is larger than the key. Example:
- Plaintext (bonjour:)
01110000 01101100… - Key (cle – repeated as “clecle”) :
01001011-01100101-01111001 01001011… - Weak key = Weak security
The encryption is less secure if the key is short, because hackers can crack it using frequency analysis.
Conclusion:
XOR encryption may be simple, but a complex and long key is needed for high security.