📖 Description

SHAKE (Secure Hash Algorithm Keccak) is based on the Keccak sponge construction and belongs to the category of Extendable-Output Functions (XOF):

Flexible Length: You can generate 16 bits for a short checksum or 1600 bits for an encryption mask.
Sponge Construction Advantage: It "absorbs" input data and "squeezes" out a digest of the desired length from the sponge, ensuring that even with extremely long outputs, every bit maintains high randomness and security.
Two Versions: * SHAKE128: Provides 128-bit security strength (against collision attacks).
- SHAKE256: Provides 256-bit security strength.

This site's tool provides a standardized SHAKE calculation environment to meet diverse development needs:

Fully compliant with the NIST FIPS 202 standard.
SHAKE128: Faster for the same output length.
SHAKE256: Offers a thicker security margin, suitable for pre-research against quantum computing risks.

Users can manually specify the output length in Bytes or Bits.
Whether you need a standard 32-byte hash or a 1024-byte data padding stream, the tool can generate it precisely.

Text Mode: Quickly processes plain text and code snippets.
Hex Mode: Allows input of raw byte sequences, facilitating analysis of underlying protocol messages.

Localized Computation: All "absorb" and "squeeze" calculation logic is performed entirely in your browser's frontend.
Zero Leakage Risk: Your original data (e.g., derived seeds, confidential documents) is never uploaded to the server. Security is equivalent to using a local offline script.

Application Area	Why Use SHAKE?	Example
Key Derivation (KDF)	Need to generate multiple keys of different lengths from a seed.	Deriving an AES key and IV from a single seed.
Post-Quantum Signatures	Modern post-quantum cryptography (e.g., Dilithium) heavily uses SHAKE.	Generating random challenge values in signature schemes.
Data Padding	Need to expand short data to a specific length.	Generating masks in asymmetric encryption.
Hash Comparison	Replacing traditional SHA-3 to obtain a specific digest length.	Generating a 160-bit digest to save storage space.

Input Original Text: Paste the text or Hex-encoded data you need to process into the input box.
Select Algorithm: Choose SHAKE128 or SHAKE256.
Specify Output Length: Enter a value in the "Output Length" box (units optional: Bytes/Bits).
Get Results Instantly: The result box will automatically display the hash string in hexadecimal format.
Format Adjustment: Toggle the case of the result with one click.
One-Click Copy: Quickly save the calculated variable-length fingerprint.

Standard Compliant: Strictly adheres to NIST standards. Calculation results are 100% consistent with OpenSSL (3.0+) and modern cryptographic libraries.
High-Performance Engine: Optimized iteration efficiency of the sponge function. Generating ultra-long outputs will not cause the page to freeze.
Completely Free: No registration required, unlimited usage. An essential tool for cryptography research and Web3 development.

SHAKE Encryption