Developer Tools
Encrypt text with an XOR key instantly for learning, testing, and basic reversible obfuscation.
Use this XOR Encrypt tool to combine text with a key using the XOR operation and produce a hexadecimal output. It is useful for learning basic cryptography concepts, CTF practice, reversible obfuscation demos, byte-level debugging, and understanding how key-based XOR transforms plain input. Paste text and a key to generate XOR-encrypted output instantly.
Use this XOR Encrypt tool to combine text with a key using the XOR operation and produce a hexadecimal output. It is useful for learning basic cryptography concepts, CTF practice, reversible obfuscation demos, byte-level debugging, and understanding how key-based XOR transforms plain input. Paste text and a key to generate XOR-encrypted output instantly.
Use xor encrypt when you need a fast browser-based result without extra setup. It works well for quick checks, one-off tasks, and routine formatting or calculation work.
Read step-by-step usage guidance, best practices, and common mistakes.
See common questions and answers about input, output, and tool usage.
Review practical input and output examples before running the tool.
Find similar and supporting tools for adjacent actions and follow-up tasks.
Input
key hello
Output
030015070A
The first line is the key, and the lines below are the plaintext.
Input
abc Attack
Output
20161700010A
Useful for seeing how a short repeating key affects multiple characters.
Fix: Put the key on the first line and the plaintext below it.
Fix: XOR with a repeating key is educational, not secure for real protection.
Fix: You must use exactly the same key to reverse the result.
Fix: This tool returns hexadecimal so the XOR result stays readable and copy-safe.
Fix: Always place the key first, then the source text on the following lines.
It combines the text with a key using XOR and returns a hexadecimal result.
Put the key on the first line and the plaintext below it.
Not in this simple repeating-key form. It is mainly useful for learning and testing.
Hex keeps the XOR result readable and easy to copy.
The reverse tool is XOR Decrypt using the same key.