Standards & programs
What is FIPS 205?
NIST Federal Information Processing Standard for SLH-DSA. Final, published August 2024. Authoritative spec for SLH-DSA across SHA2 and SHAKE hash families.
Decision context
Why FIPS 205 matters
FIPS 205 is the finalized algorithm standard for SLH-DSA and provides a standardized hash-based signature option. Its twelve parameter sets make the SHA2 or SHAKE family, security category and small or fast trade-off material to interoperability and operational design.
How to evaluate FIPS 205
Record the full parameter-set identifier rather than the family name alone. Test key generation, signing, verification and malformed signatures against authoritative vectors, then measure signature size and latency on the real path. Do not equate algorithm standardization with module or product certification.
Standards & programs
Standards & programs evidence boundary
Standards define algorithms, testing methods, transition expectations, or regulatory obligations; they do not automatically certify a product or deployment. Confirm the exact publication, version, scope, implementation evidence, and accountable assessment route before describing a system as compliant or validated.
FAQ
Common questions
What is FIPS 205?
NIST Federal Information Processing Standard for SLH-DSA. Final, published August 2024. Authoritative spec for SLH-DSA across SHA2 and SHAKE hash families.
Why does FIPS 205 matter?
FIPS 205 is the finalized algorithm standard for SLH-DSA and provides a standardized hash-based signature option. Its twelve parameter sets make the SHA2 or SHAKE family, security category and small or fast trade-off material to interoperability and operational design.
How should FIPS 205 be evaluated?
Record the full parameter-set identifier rather than the family name alone. Test key generation, signing, verification and malformed signatures against authoritative vectors, then measure signature size and latency on the real path. Do not equate algorithm standardization with module or product certification.
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