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Tool Factory

Cryptography & Ciphers

XTEA Encryption

Apply XTEA Encrypt with explicit key, format, and algorithm settings. Enter the data and key material, choose the parameters, then review the result.

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Apply XTEA Encrypt with explicit key, format, and algorithm settings. Enter the data and key material, choose the parameters, then review the result.

This tool runs open-source code from CyberChef by GCHQ (Apache License 2.0). See open-source credits.

XTEA Encryption uses XTEA block encryption to process the supplied input. It returns ciphertext for the supplied plaintext bytes. The extended construction exposes a Rounds control, with a default value of 32.

It returns ciphertext for the supplied plaintext bytes. The extended construction exposes a Rounds control, with a default value of 32. Processing runs in the browser for this catalog category, so the result depends on the supplied bytes and settings. Processing runs in the browser.

This tool performs the selected algorithm locally; it does not provide application trust or key management.

Instructions

  1. Provide text or data for this tool.
  2. Use disposable test material; the zero IV is only a reproducible example. This applies to XTEA Encryption.
  3. Keep the complete ciphertext and settings for the paired decrypt operation. This applies to XTEA Encryption.

Example

Input: Use ASCII abc, CBC, key 000102030405060708090a0b0c0d0e0f in Hex, and an all-zero 8-byte IV.

Settings: XTEA Encryption: Key length: 16 bytes. Non-ECB IV length: 8 bytes. Keep Rounds 32 and Padding PKCS5 for the sample; decryption must use the same round count. Input: Raw; Output: Hex for a transferable ciphertext fixture.

Result: It returns ciphertext for the supplied plaintext bytes. The extended construction exposes a Rounds control, with a default value of 32. Processing runs in the browser for this catalog category, so the result depends on the supplied bytes and settings.

Limits

  • XTEA Encryption: 8-byte blocks determine alignment requirements when padding is disabled.
  • XTEA Encryption: These modes do not add an authentication tag or manage keys.

Questions

Which key settings does XTEA encrypt require?

Use a 16-byte key and match the 8-byte IV where required. Match Rounds as well as the key; the control changes the transformation.

Why does XTEA output differ from another tool?

Match Mode and Padding with the original operation. XTEA ciphertext cannot generally be processed as TEA or XXTEA ciphertext.

How should I copy XTEA encrypt input and output?

Select the actual Input representation before running the operation. Choose Hex output when you need to preserve arbitrary bytes during copying. A readable result or a Complete label alone does not verify the message or its sender.