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Tool Factory

Cryptography & Ciphers

TEA Decryption

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

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Add the required input to continue.

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Options

Your result appears here

Apply TEA Decrypt 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.

TEA Decryption uses TEA block decryption to process the supplied input. It recovers plaintext from the matching ciphertext and settings. The Tiny Encryption Algorithm implementation uses its fixed cycle count and exposes no Rounds field.

It recovers plaintext from the matching ciphertext and settings. The Tiny Encryption Algorithm implementation uses its fixed cycle count and exposes no Rounds field. 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. Copy the complete output of the paired encrypt operation, not its displayed plaintext. This applies to TEA Decryption.
  3. Match key, IV, mode, and padding before expecting abc. This applies to TEA Decryption.

Example

Input: First encrypt ASCII abc with TEA, CBC, key 000102030405060708090a0b0c0d0e0f, and an all-zero 8-byte IV. Paste that Hex ciphertext here.

Settings: TEA Decryption: Key length: 16 bytes. Non-ECB IV length: 8 bytes. Use Padding PKCS5 for the sample; blank IV input becomes zero bytes for compatibility. Input: Hex; Output: Raw for the paired text fixture.

Result: It recovers plaintext from the matching ciphertext and settings. The Tiny Encryption Algorithm implementation uses its fixed cycle count and exposes no Rounds field. Processing runs in the browser for this catalog category, so the result depends on the supplied bytes and settings.

Limits

  • TEA Decryption: 8-byte blocks determine alignment requirements when padding is disabled.
  • TEA Decryption: Readable plaintext does not prove that ciphertext is authentic.

Questions

Which key settings does TEA decrypt require?

Use a 16-byte key and match the 8-byte IV where the mode uses one. The selected key encoding determines the actual key bytes.

Why does TEA output differ from another tool?

Match Mode and Padding with the source. TEA, XTEA, and XXTEA are different operations and are not interchangeable.

How should I copy TEA decrypt 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.