Developer Tools
Find clear answers to common questions about XOR Decrypt, including usage, output, and common issues.
Use this XOR Decrypt tool to reverse XOR-encrypted hexadecimal text using the same key that was used for encryption. It is useful for CTF practice, cryptography basics, byte-level debugging, reversible obfuscation demos, and understanding how XOR transforms can be undone when the key is known.
XOR Decrypt is built for development, debugging, formatting, and quick technical checks directly in the browser.
It reverses XOR-encrypted hex using the provided key.
Use hexadecimal characters with an even total length.
Yes. XOR decryption requires the exact same key.
The most common reasons are the wrong key or invalid ciphertext format.
The reverse tool is XOR Encrypt.
XOR Decrypt is built for development, debugging, formatting, and quick technical checks directly in the browser.
Start by checking the input format, removing accidental spaces or unsupported characters, and comparing your input against the example pattern on the page.
Fix: Use exactly the same key that was used to encrypt the text.
Fix: Enter only hexadecimal characters with an even total length.
Fix: This tool expects hexadecimal ciphertext, not ordinary text.
Fix: Put the key first and the hex ciphertext below it.
Fix: This tool only reverses simple XOR when the key is already known.
If you want to see realistic input and output patterns, open the examples page. If you want step-by-step usage guidance, open the guide page.
Open the main XOR Decrypt page to test your own input and generate a live result.