Hashes noble-hashes xof

SHAKE128 Generator

Generate variable-length SHAKE128 XOF output for key derivation and masking.

shake128.workspace
1 option
0 bytes UTF-8, Hex, Base64, or File input

Secure client-side computation. No data leaves your browser. Privacy Security

Result Output

What Is SHAKE128?

SHAKE128 is a secure XOF (Extendable-Output Function) that produces variable-length output using Keccak-f[1600] with 256-bit capacity, providing 128-bit security with arbitrary-length output capability.

Specifications

Output Size Variable
Standard FIPS 202
Standard Year 2015
Origin Keccak submission to NIST SHA-3 competition
Origin Year 2008

Use Cases

  • Key derivation with custom length
  • Stream cipher construction
  • Mask generation functions (MGF)
!

Security Notice

SHAKE128 is a secure extendable-output function when used with an appropriate output length. Use a dedicated KDF or password hashing algorithm for password storage.

Related Tools

SHAKE256 Hashes SHA3-256 Hashes cSHAKE128 Hashes

Utilities

File Hash Verifier Verify local files against published checksums. Hash Compare Compare expected and actual digest values. Multi Hash Generator Generate common hashes from one input.

Guides

Algorithm Comparison Guide Choose the right primitive for each task. Hash Test Vectors Compare known outputs across common algorithms.

Implementation Notes

Practical usage details for this browser-based SHAKE128 tool.

How to Generate a SHAKE128 hash

  1. Choose UTF-8, Hex, Base64, or File input mode.
  2. Enter text, encoded bytes, or choose a local file to process.
  3. Adjust the SHAKE128 options if your use case requires non-default settings.
  4. Click Generate SHAKE128 Hash and copy the result.

Example Input

Sample input:

abc

Use this sample input, then copy the generated hash from the result panel.

When Not to Use SHAKE128

  • Do not use a plain hash or derivation output directly as password storage without the right password-hashing construction and parameters.
  • Do not use it as a drop-in replacement for a fixed-length hash without choosing and documenting the output length.

Recommended Alternatives

Review related tools when you need a different output size, security margin, or keyed construction.

Frequently Asked Questions