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XOR Encrypt

Encrypt text by XORing with a repeating key.

Note: XOR is a symmetric operation — encrypting twice with the same key recovers the original text. The output is lowercase hex. XOR alone is not cryptographically secure; treat it as obfuscation.

What Is a XOR Encrypt?

The XOR Encrypt tool obfuscates text by XORing every byte with a repeating key byte. XOR is a simple bitwise operation (exclusive OR) that is symmetric: applying the same key twice restores the original data. It is used in many simple protocols and for light obfuscation. This free online tool is useful for XOR encryption tool, XOR cipher, XOR text to hex. Common use cases include educational experiments, simple obfuscation, reverse engineering, and legacy formats. It is designed for quick browser-based hashing, encoding, decoding, encryption testing, checksum comparison, identifier generation, and cryptography education. For production security, follow the algorithm's current standards, key-management requirements, and application-specific security guidance.

How to Use This XOR Encrypt

  1. 1
    Enter the inputType or paste the text, number, key, or value required by the tool.
  2. 2
    Choose the relevant optionSelect the algorithm, variant, direction, or format when the tool provides choices.
  3. 3
    Run the operationThe conversion or cryptographic calculation is performed in your browser.
  4. 4
    Review the resultCheck the output format and any algorithm-specific warnings.
  5. 5
    Copy the resultUse the generated value in your development, testing, education, or verification workflow.

Frequently Asked Questions

No. XOR with a repeating key is vulnerable to frequency analysis and known-plaintext attacks. It should be treated as obfuscation, not real encryption.
The XOR result often contains non-printable bytes, so it is shown as lowercase hexadecimal for safe copying and pasting.