๐ XOR Cipher Calculator
Not suitable for real security use โ this is an educational/experimental tool.
Enter text and a key to encrypt or decrypt it using a repeating-key XOR cipher. This is an educational/experimental simple cipher that relies on the property that XOR-ing twice with the same key restores the original value.
How to use
- Choose encrypt or decrypt mode.
- Enter plaintext (for encryption) or hex-encoded ciphertext (for decryption).
- Enter a key.
- The result is calculated automatically.
FAQ
Is XOR cipher secure?
No, itโs not suitable for real security โ short keys are easily broken via frequency analysis. Use it only for education, experimentation, or simple obfuscation.
Why does XOR-ing twice with the same key restore the original?
XOR has the property A XOR B XOR B = A, so re-applying the same key used for encryption recovers the original data.
What if the result looks garbled?
If the decrypted bytes donโt form valid UTF-8 text (e.g. because the key is wrong), no result is shown. Double-check that the key matches the one used for encryption.