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ParallelHash128 Generator - Parallelizable Tree Hash

Generate ParallelHash128 - parallelizable tree hash using interleaving per NIST SP 800-185.

parallelhash128.workspace
3 options
0 bytes UTF-8, Hex, Base64, or File input

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

Result Output

What Is ParallelHash128?

ParallelHash128 is a parallelizable hash function defined in NIST SP 800-185 using tree hashing with interleaving, designed for efficient parallel processing of large data with configurable block size.

Specifications

Output Size Variable
Standard NIST SP 800-185
Standard Year 2016
Origin Keccak submission to NIST SHA-3 competition
Origin Year 2008

Use Cases

  • Large file parallel hashing
  • Tree hash construction
  • Incremental hash computation
  • NIST-compliant parallel hashing
  • Data center large-scale hashing
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Security Notice

ParallelHash128 is suitable for cryptographic integrity checks and fingerprints when used appropriately. Use HMAC or KMAC when you need message authentication, and use a dedicated KDF such as Argon2, bcrypt, or scrypt for password storage.

Related Tools

ParallelHash256 Hashes cSHAKE128 Hashes SHAKE128 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 ParallelHash128 tool.

How to Generate a ParallelHash128 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 ParallelHash128 options if your use case requires non-default settings.
  4. Click Generate ParallelHash128 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 ParallelHash128

  • 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 for small inputs where parallel hashing adds complexity without benefit.

Recommended Alternatives

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

Frequently Asked Questions