Post-Quantum PASERK (k5, k6) #22
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Both k5.seal and k6.seal use X-Wing (X25519 + ML-KEM-768). Symmetric-key encryption and Password-Based Key Wrapping are unchanged (aside from the headers differing).
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One alternative we also considered: Just using basic ML-KEM-1024 for PASERK v5.seal, rather than X-Wing, since the NSA wants everyone using that. |
CNSA 2.0 requires ML-KEM without a hybrid construction, and also mandates, "Use Level V parameters for all classification levels". Since v5 is the "NIST" and "FIPS" flavor of PASETO, k5 will aim to maintain CNSA 2.0 friendliness for PASERK.
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Actually, CNSA 2.0 (which a lot of companies that sell to the US government care about) tells us we'd have to use ML-KEM-1024, so now we're doing that. |
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(Test vectors will be generated once this pull request has been merged, and our reference implementation has been updated to accommodate the new algorithms.) |
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Both k5.seal and k6.seal use X-Wing (X25519 + ML-KEM-768).Symmetric-key encryption and Password-Based Key Wrapping are unchanged (aside from the headers differing).
See paseto-standard/paseto-spec#36 for the congruent PASETO change
EDIT: