Overview
Introduction
SHAKE is the one algorithm in this category that doesn't have a single fixed output size, and seeing its longer default output on a random sample makes that concrete fast.
This tool generates a random sample string and computes its SHAKE256 output for you, no need to type anything, reusing this category's existing SHAKE calculator at its 64-byte default length.
What Is Random SHAKE Hash Generator?
A no-input variant of the SHAKE Hash Calculator: instead of typing text, you get a fresh random sample string and its 512-bit (64-byte) SHAKE256 output on load, with a Regenerate button for a new pair anytime.
SHAKE (part of FIPS 202, alongside SHA3-224/256/384/512) is an extendable-output function built on the same Keccak sponge, squeezed for however many bytes are requested rather than a single fixed digest size.
How Random SHAKE Hash Generator Works
On load and on every Regenerate click, a random word or phrase is drawn from a small built-in bank and combined with a random 8-character hex suffix from crypto.getRandomValues, forming the sample shown alongside the output.
That sample is passed to this category's existing calculateShakeHash function, which absorbs it into a Keccak sponge with SHAKE's own domain-separated padding and squeezes out 64 bytes, hex-encoded as 128 characters.
When To Use Random SHAKE Hash Generator
Use this for a quick, no-effort example of SHAKE256's longer, variable-length output format, teaching material, or a mockup that needs a plausible-looking extended-output value.
For anything requiring a specific input's output, or a different output length, use the SHAKE Hash Calculator instead.
Often used alongside SHAKE Hash Calculator, SHA3-256 Hash Calculator and Keccak Hash Calculator.
Features
Advantages
- No input required, instantly produces a plausible sample and its SHAKE256 output.
- Uses genuinely secure randomness (crypto.getRandomValues), not a predictable pseudorandom sequence.
- Reuses the same audited SHAKE256 implementation as the dedicated calculator, so output is guaranteed to match.
Limitations
- The sample word bank is small and fixed, so the non-random word portion repeats across regenerations even though the hex suffix and output always differ.
- Fixed at this category's 64-byte default output length; if you need a different length, use the SHAKE Hash Calculator, which shares the same convenience-default limitation.
- Not useful if you need the output of a specific, known input, use the calculator tool for that instead.
Examples
Best Practices & Notes
Best Practices
- Click Regenerate a few times if you're picking an example for documentation and want one that reads cleanly.
- Always note the output length alongside any SHAKE value you document, since the algorithm name alone doesn't imply a digest size the way SHA-256 does.
- For a real, reproducible output for specific text, switch to the SHAKE Hash Calculator instead.
Developer Notes
Generates its sample via this category's shared generateRandomSampleText() helper (crypto.getRandomValues, not Math.random()) and hashes it synchronously with the existing calculateShakeHash function (@noble/hashes' shake256 with dkLen: 64), matching the useEffect-after-mount pattern used across this category's random generators to avoid a hydration mismatch.
Random SHAKE Hash Generator Use Cases
- Grabbing a quick example SHAKE256 output for documentation or a tutorial
- Populating a UI mockup with a plausible-looking extended-length pseudorandom value
- Seeing SHAKE's 128-character default output format without typing your own input
- Comparing SHAKE's longer variable-length output against fixed-size SHA3-256 on the same random sample
Common Mistakes
- Expecting the same sample/output pair to reappear; both are freshly randomized on every load and Regenerate click.
- Calling this tool's output "the hash" without noting the 64-byte length used; SHAKE's digest size isn't implied by the algorithm name.
- Using this when you actually need the output of specific, known text; the SHAKE Hash Calculator is the right tool for that.
Tips
- Need the input to chain into another tool? Use the send-to-tool menu on the output panel.
- Run the same generated sample through the SHA3-256 Hash Calculator to compare a fixed-size digest against SHAKE's longer extendable output.