Generate TupleHash256 - high-security 256-bit tuple encoding with domain separation per NIST SP 800-185.
About
TupleHash256 is a high-security tuple hashing function defined in NIST SP 800-185 with 256-bit security, encoding sequences with domain separation for unambiguous structured data hashing.
Specifications
Output SizeVariable
StandardNIST SP 800-185
Standard Year2016
Origin Keccak submission to NIST SHA-3 competition
Origin Year 2008
Use Cases
—High-security structured data authentication
—Long-term certificate integrity
—Critical database record hashing
—High-assurance protocol messages
—Post-quantum tuple encoding
Frequently Asked Questions
TupleHash256 provides 256-bit security versus 128-bit. Use it for high-security structured data authentication, long-term integrity protection, or when you need longer output. TupleHash128 is sufficient for most applications with lower security requirements.
TupleHash256 is used for high-security database record authentication, complex certificate chain validation, secure audit logs, and any structured data requiring both unambiguous encoding and high security margins.
Hashing serialized JSON is fragile—formatting changes break verification. TupleHash256 provides explicit domain separation for data structures without serialization dependencies. It's more robust for structured data authentication.