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software · published 2026-04-23

Hybrid-signed audit log with PQC co-signature

An append-only audit log where each entry carries both a classical ECDSA signature and a post-quantum signature from a disjoint key, with verifiable rollover.

Composite score

82/100

Dual-signature audit logs exist in the literature; the verifiable rollover where classical keys retire but the log remains PQC-verifiable end-to-end is the novel claim.

Closest prior art

  1. #1 · arxivsimilarity 49%

    Cryptographic rotation strategies for long-lived audit trails

    arXiv:2502.09118 · unassigned · published 2025-02-13
  2. #2 · usptosimilarity 48%

    Dual-algorithm signature scheme for append-only logs

    US20250099001A1 · Amazon Web Services, Inc. · published 2025-03-27

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Memo watermark: 50search.com/search/hybrid-signed-audit-005

Hybrid-signed audit log with PQC co-signature