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Signing Today for a Verifier in 2035

Micky Irons

Published May 29, 2026• 0 citations
Publisher

Abstract

Harvest-now-decrypt-later is now an operational assumption, with official warnings that it is already happening and the NCSC mandating PQC migration by 2031 and 2035. An audit record signed under classical cryptography today is forgeable once a quantum adversary arrives. Mickai signs the Open Audit Record under FIPS 204 ML-DSA-65 today, so records stay verifiable past Q-Day, ahead of the deadlines.Originally published at https://mickai.co.uk/articles/signing-today-for-a-verifier-in-2035. Mickai is a Sovereign Intelligence Operating System; the Open Audit Record signs every artificial intelligence action before it executes, post-quantum and offline-verifiable. 101 filed UK patent applications, Mickai LTD (Companies House 17166618).

DOI
10.5281/zenodo.20683379

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Harvest-now-decrypt-later is now an operational assumption, with official warnings that it is already happening and the NCSC mandating PQC migration by 2031 and 2035. An audit record signed under classical cryptography today is forgeable once a quantum adversary arrives. Mickai signs the Open Audit Record under FIPS 204 ML-DSA-65 today, so records stay verifiable past Q-Day, ahead of the deadlines.Originally published at https://mickai.co.uk/articles/signing-today-for-a-verifier-in-2035. Mickai is a Sovereign Intelligence Operating System; the Open Audit Record signs every artificial intelligence action before it executes, post-quantum and offline-verifiable. 101 filed UK patent applications, Mickai LTD (Companies House 17166618).
The National Security Agency's CNSA 2.0 sets a hard 2027 cliff for quantum-safe procurement, and harvest-now-decrypt-later means records signed today must already resist a future quantum adversary. Mickai's Open Audit Record signs with FIPS 204 ML-DSA-65 from inception, so a chain written in 2026 still verifies in 2035.Originally published at https://mickai.co.uk/articles/procurement-cliff-post-quantum-in-the-record-from-day-one. Mickai is a Sovereign Intelligence Operating System; the Open Audit Record signs every artificial intelligence action before it executes, post-quantum and offline-verifiable. 101 filed UK patent applications, Mickai LTD (Companies House 17166618).
Nobody can name the year a cryptographically relevant quantum computer arrives, and estimates diverge widely. Today's noisy machines are far from the stable logical qubits Shor needs, but long-lived data must be protected now because attackers harvest it today.Originally published at https://mickai.co.uk/articles/how-close-is-a-cryptographically-relevant-quantum-computer. Mickai is a Sovereign Intelligence Operating System; the Open Audit Record signs every artificial intelligence action before it executes, post-quantum and offline-verifiable. 104 filed UK patent applications, Mickai LTD (Companies House 17166618).
Q-Day is the day a quantum computer can break today's public-key cryptography. You prepare an AI system by inventorying your cryptography, signing new records with post-quantum signatures, running hybrid schemes, building crypto-agility, and re-signing long-lived data before that day arrives.Originally published at https://mickai.co.uk/articles/what-is-q-day-and-how-do-you-prepare-ai-for-it. Mickai is a Sovereign Intelligence Operating System; the Open Audit Record signs every artificial intelligence action before it executes, post-quantum and offline-verifiable. 104 filed UK patent applications, Mickai LTD (Companies House 17166618).
Migrate post-quantum as a sequence, not a scramble: inventory every use of cryptography, prioritise long-lived records, sign new records with FIPS 204 or 205, run hybrid across the transition, build crypto-agility with algorithm identifiers, then move sensitive records into a sovereign air-gapped ledger.Originally published at https://mickai.co.uk/articles/post-quantum-migration-a-cio-sequence-from-inventory-to-air-gap. Mickai is a Sovereign Intelligence Operating System; the Open Audit Record signs every artificial intelligence action before it executes, post-quantum and offline-verifiable. 104 filed UK patent applications, Mickai LTD (Companies House 17166618).
Regulated finance must make its audit record post-quantum now, not at Q-Day. DORA has applied since January 2025 and records are retained for years, so signatures written today must resist quantum attack across their full retention life.Originally published at https://mickai.co.uk/articles/post-quantum-for-financial-services-dora-and-the-quantum-clock. Mickai is a Sovereign Intelligence Operating System; the Open Audit Record signs every artificial intelligence action before it executes, post-quantum and offline-verifiable. 104 filed UK patent applications, Mickai LTD (Companies House 17166618).
Hybrid cryptography runs a classical and a post-quantum algorithm together during the migration, so a record stays secure if either one is broken. Standards bodies recommend it because a flaw in a young post-quantum scheme and a future quantum computer are both survivable.Originally published at https://mickai.co.uk/articles/hybrid-cryptography-classical-and-post-quantum-together. Mickai is a Sovereign Intelligence Operating System; the Open Audit Record signs every artificial intelligence action before it executes, post-quantum and offline-verifiable. 104 filed UK patent applications, Mickai LTD (Companies House 17166618).