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Verification register Security & Identity

Readiness verdict

NIST HQC (Post-Quantum Backup KEM)

A dated reading of what is claimed, reported, and independently verified in the current evidence.

As of
2026-10-09
Revision
3
Method
v1.4.0

Current reading

Readiness band and full integer triple

AI-assisted assembly · derived results

Readiness band

Emerging

Primary summary from verified readiness

Confidence
74% · stale
Computed at
2026-10-09T21:08:34.852957+00:00
Claimed
35

Public ambition and stated capability

Reported
35

Observed practitioner reporting

Verified
25

Independently supported evidence

Gap
+10

Claimed leads verified

Evidence strength Strong

Decision

What the current evidence supports

Agent-assisted assessment · independently reviewed · 2026-10-09

Evaluate HQC in isolated backup-KEM experiments with explicit version controls.

Why
HQC provides mathematical diversity, but parameters are changing and older implementation tests expose serious physical side-channel weaknesses.
Next
Continue migration with finalized standards; reassess HQC when the official draft and matching implementations are available, including bandwidth and side-channel testing.

Constraints

Blockers

  • Unfinished standard and changing parameters
  • Older implementation results do not validate the September parameter proposal.
  • Large public keys and ciphertexts
  • Physical side-channel weaknesses in tested implementations
  • Limited independently demonstrated production use

Evidence summary

Derived counts

AI-assisted assembly

Total
8
Tier 1
5
Tier 2
3
Tier 3
0
Supports
1
Contradicts
4
Context
3
Latest observed
2026-09-09

Counts and dates only. Raw signals, private excerpts, trust records, and internal corpus material are not published here.

Publication record

Revisions

Revision 3

  1. 2026-07-19 Reading moved from emerging to emerging.
  2. 2026-09-22 Reading moved from emerging to emerging.
  3. 2026-10-01 Reading moved from emerging to emerging.

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