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TupleHash128 Generator - Tuple Authentication Hash

Generate TupleHash128 - encode tuples with domain separation preventing concatenation ambiguity attacks.

tuplehash128.workspace
2 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 TupleHash128?

TupleHash128 is a tuple hashing function defined in NIST SP 800-185 that encodes sequences of strings with domain separation, ensuring hash([a,b]) != hash([ab]) to prevent attacks on structured data.

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

  • Structured data integrity verification
  • Certificate chain hashing
  • Database record authentication
  • Serialization format integrity
  • Protocol message authentication
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Security Notice

TupleHash128 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

TupleHash256 Hashes cSHAKE128 Hashes KMAC128 MACs

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 TupleHash128 tool.

How to Generate a TupleHash128 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 TupleHash128 options if your use case requires non-default settings.
  4. Click Generate TupleHash128 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 TupleHash128

  • 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 when a normal single-input hash is the clearer tool.

Recommended Alternatives

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

Frequently Asked Questions