Post-Quantum Cryptography for .NET & Azure Estates

The algorithms have expired. The engineering problem has just begun.

NIST has finalized its post-quantum standards (FIPS 203, 204, 205), and the "harvest now, decrypt later" window is already closing on your long-lived data. But the free PQC scanners read Java, Python, Go and npm — point one at a C#/.NET estate and it hands back a thin report, or an empty one. 365 Architect does cryptographic discovery and crypto-agility engineering for the stack those tools skip.

If your estate is .NET, the free scanners hand you an empty report.

Cryptographic discovery tooling has become a commodity — open-source CBOM scanners, browser-based checkers, CI actions, all free. Every one of them was built for Java, Python, Go and npm. C# is not on the list.

The free tools do not parse C#

The widely-used open-source CBOM scanners document their language coverage explicitly, and .NET is either unsupported or absent from the list. Their manifests are package.json, requirements.txt, go.mod — not .csproj.

So a .NET estate cannot self-serve an answer

Run the free scan against a C# monolith and you get a clean bill of health that means nothing — not because the crypto isn't there, but because nothing read the code. A false negative is worse than no scan at all.

We built the analyser for C#

Roslyn-based semantic analysis with fully-qualified type resolution across roughly eighty cryptographic API signatures — System.Security.Cryptography plus third-party libraries such as BouncyCastle and NSec, where most of the real footprint hides.

The math is solved. The architecture is not.

Most enterprises are paralyzed not by the new quantum-resistant algorithms, but by their own architecture. You cannot migrate what you cannot see.

The Dependency Blindspot

Most of your cryptographic footprint doesn't live in your active code. It is buried in unmanaged third-party NuGet packages, legacy monolithic integrations, and black-box APIs.

The Retroactive Threat

Adversaries are archiving encrypted traffic today. If your data must remain secret for 10 years, and a cryptanalytically relevant quantum computer (CRQC) arrives in 7, your breach has already happened.

The Compliance Clock

NSA's CNSA 2.0 mandates the transition for national security systems by category across 2030–2033, with 2035 as the overall goal. Sector regulators, financial compliance boards, and cyber-insurance underwriters are already demanding roadmaps.

The June 2026 Executive Order turned this into a deadline.

The Executive Order on securing the nation against advanced cryptographic attacks gives federal agencies and their contractors hard post-quantum dates — and it is the strongest published deadline available to a US buyer. Read the Executive Order.

End-2030 · Federal high-value assets

Federal agencies move high-value systems to post-quantum keys by the end of 2030.

End-2030 · Federal contractors

Contractors to the federal government must meet NIST FIPS by the end of 2030.

End-2031 · Post-quantum signatures

Federal agencies complete the move to post-quantum signatures by the end of 2031.

End-2027 · Commerce migration pilot

A Commerce-led PQC migration pilot is due by the end of 2027 — the proof that a large-scale migration can actually run.

How we execute the migration.

We do not sell vendor software or black-box scanners. We deliver a rigorous, phased engineering intervention designed to transition your entire estate without halting operational velocity.

01Audit — Cryptographic Discovery

We map your actual cryptographic reality. Using advanced static analysis and runtime tracing, we generate a comprehensive Cryptographic Bill of Materials (CBOM) across your active source code, legacy binaries, and supply chain dependencies.

02Analysis — Risk & Exposure Profiling

We cross-reference your CBOM against data retention lifespans and compliance mandates. We separate the critical "harvest now" vulnerabilities from low-priority internal systems to build a prioritized risk matrix.

03Evaluation — Architecture & Strategy

We evaluate migration strategies on real-world infrastructure. We design the decoupled architectural wrappers—Crypto-Agility layers—required to swap legacy RSA/ECC for NIST-standardized algorithms without breaking downstream systems.

04Consultancy — Implementation Governance

We deliver an executable, multi-year blueprint. We advise your architecture review boards, train your principal engineers, and provide ongoing governance to ensure the transition is flawless.

We don't just write roadmaps. We write the reference architectures.

We are principal-level enterprise architects. We don't rely on generic best practices; we rely on empirical engineering.

Deep Runtime Visibility

We build our own custom Abstract Syntax Tree (AST) parsers and execution tracers to map cryptographic call graphs where off-the-shelf scanners fail. We use this to accelerate your audit, and we leave the data with you.

Platform Authority

We intimately understand the intersection of legacy frameworks and modern runtimes (such as native .NET in-box PQC support). We know exactly what will break during a hybrid transition and how to isolate it.

Open Validation

Our reasoning is public. Read our published reference guides, like QuantumReady 365, to see exactly how we map FIPS 203/204/205 standards to active enterprise environments before you ever sign a contract.

For EU & EU-facing enterprises

If you hold EU data with a long confidentiality lifetime, the quantum clock is already running — and your migration can be run without your data ever leaving EU jurisdiction.

Harvest-now, decrypt-later hits EU data first

GDPR-protected personal data and long-lived IP are exactly what adversaries record today to decrypt once a quantum computer exists. Anything with a 5–10+ year confidentiality requirement is exposed now.

Aligned to EU direction

EU and national cyber authorities (ENISA, Germany's BSI, France's ANSSI) are steering enterprises toward post-quantum migration, and NIS2 raises the bar on state-of-the-art cryptography. We map your estate to that direction, not just the US standards.

Data residency by design

We run against your own infrastructure — your Cryptographic Bill of Materials never leaves your environment — and deliverables are handed over through NestVault365, which can be pinned to EU-region hosting. DPA and Standard Contractual Clauses available.

Engagements & Pricing

We do not sell blocks of hours, and we do not provide open-ended consulting retainers. We deliver fixed-scope, fixed-fee architectural interventions. Most estates start with Discovery on a single application.

Cryptographic Discovery

One .NET application, analysed end to end in three days. A senior architect reads the CBOM, cross-references exposure against your data retention posture, and delivers a prioritised 90-day roadmap. This is analysis, not more scanning — and three days to a decision-grade answer, not three weeks.

Fixed Deliverables

  • Complete CBOM for one application via custom AST parsing.
  • Harvest-Now-Decrypt-Later (HNDL) exposure read for its data flows.
  • Human-led analysis: what is real, what is noise, what is urgent.
  • Prioritised 90-day roadmap for that scope.

Excludes estate-wide coverage, the crypto-agility architecture blueprint, and the board briefing — those are the Baseline Audit.

Cryptographic Baseline Audit

Your full estate, analysed — every repository, every dependency, every integration point. Plus a target crypto-agility architecture and an executive board briefing. The breadth is the entire justification for the investment.

Fixed Deliverables

  • Full-estate Cryptographic Bill of Materials (CBOM).
  • Retroactive 'Harvest Now, Decrypt Later' Exposure Risk Matrix.
  • Decoupled Crypto-Agility Wrapper Architectural Blueprint.
  • Technical Board & Executive Architecture Review Briefing.

Free .NET Cryptographic Scan

A Cryptographic Bill of Materials for your C#, which nothing free on the market will give you. A hard-capped, two-day run of our Compass engine against one repository — under NDA, on your infrastructure. Output only — no analysis, no roadmap.

What You Get

  • Cryptographic Bill of Materials (CBOM) for one C#/.NET repository.
  • Raw cryptographic call-graph output, including third-party libraries.
  • Runs on your infrastructure. Nothing is uploaded, nothing phones home.
  • No human analysis. No roadmap. Output only.

Cryptographic Assurance License

The .NET crypto knowledge base, kept current, signed, and running inside your own pipeline with no egress — so the remediation the audit delivered stays delivered, and newly introduced quantum-vulnerable cryptography is caught as it is written.

What the Licence Covers

  • Licensed CI/CD package as a NuGet package in your own build.
  • Signed Knowledge Base updates for the full term.
  • Builds fail when new quantum-vulnerable cryptography is introduced.
  • Offline signed licences — no licence server, no phone-home, air-gap safe.

Available after the Baseline Audit. Does not include the Workbench — the licence protects the remediation, it does not replace the audit.

When we are not the right firm for this

We are a deep vertical, not a full-service PQC practice. Two situations where someone else will serve you better — you would find this out eventually, so you should find it out now.

If your estate is genuinely polyglot

Java, Python, Go and JVM services across the board, with .NET a minority of the footprint — then breadth beats depth and we are the wrong vendor. Applied Quantum covers PQC readiness, cryptographic inventory and crypto-agility advisory across the whole quantum-technology stack, with the executive-level breadth a multi-year enterprise programme needs.

If you need a cryptographic primitive or protocol reviewed

“Is this construction correct? Is this implementation sound?” is cryptographic research, not estate discovery — a different discipline with a different bar. KeyCryptic is the better call: Nicky Mouha, PhD, spent nine years at NIST working on national and international cryptographic standards.

We are the right call when the estate is C#/.NET on Azure

And the question is the practical one: where does quantum-vulnerable cryptography actually live in our code, what is genuinely urgent, and how do we migrate it without a flag day. That is the question the free scanners cannot answer at all — and it is the only question we work on.

Your exposure grows every day you delay discovery.

Book Cryptographic Discovery — 3 Days, $8,500