Hashes noble-hashes xof

SHAKE256 Generator

Generate high-security SHAKE256 XOF output with arbitrary length.

shake256.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 SHAKE256?

SHAKE256 is a high-security XOF that produces variable-length output using Keccak-f[1600] with 512-bit capacity, providing 256-bit security and arbitrary output length.

Specifications

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

Use Cases

  • Variable-length key derivation
  • High-security masking functions
  • Arbitrary-length pseudorandom generation
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Security Notice

SHAKE256 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

SHAKE128 Hashes SHA3-512 Hashes cSHAKE256 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 SHAKE256 tool.

How to Generate a SHAKE256 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 SHAKE256 options if your use case requires non-default settings.
  4. Click Generate SHAKE256 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 SHAKE256

  • Do not use a plain hash or derivation output directly as password storage without the right password-hashing construction and parameters.

Recommended Alternatives

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

Frequently Asked Questions