XOR Text Cipher & Decrypter
Local ProcessingPerform bitwise XOR encryption and decryption on text using a repeating secret key with text-to-hex and hex-to-text modes.
How It Works & Processing Standards
Perform bitwise XOR encryption and decryption on text using a repeating secret key with text-to-hex and hex-to-text modes.
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Current Limits
- Maximum input length: 2,000,000 characters
XOR with the same key twice returns the original value. The text’s UTF-8 bytes are XORed with the repeating key; the result may not be printable, so it is shown as hex.
Repeating-key XOR is easy to break; do not use it to protect secrets. Use the AES-GCM tool for encryption.
What You Can Do
- Text → hex
- XOR text with the key and write the bytes as hex.
- Hex → text
- XOR hex with the same key to recover the text.
How to Use XOR Text Cipher & Decrypter
- 1Choose a directionText → hex or hex → text.
- 2Enter text and keyType the text (or hex) and the key.
- 3CopyCopy the result.
Examples
Common Use Cases
- Solving XOR challenges in CTFs or security training
- Reading settings a legacy app hid with XOR
Frequently Asked Questions (FAQ)
Why does H XOR k give 23?
H is 0x48 and k is 0x6b; 0x48 XOR 0x6b = 0x23. i (0x69) XOR k (0x6b) = 0x02, so the result is 2302.