Post-Quantum Cryptography
Helping organizations migrate to quantum-safe security — early, safely, and without disrupting the systems that run the business
WHY POST-QUANTUM CRYPTOGRAPHY
A computing shift that breaks today's encryption
Post-quantum cryptography (PQC) is a family of algorithms built to stay secure against attacks from quantum computers — machines powerful enough to make today's public-key systems obsolete.
Classical schemes such as RSA, Diffie–Hellman, and ECC rely on math problems that quantum algorithms like Shor's can solve quickly — factoring large numbers and computing discrete logarithms that are infeasible for classical machines.
PQC instead builds on problems considered hard for both classical and quantum machines: lattice-based, code-based, hash-based, and multivariate approaches.
VULNERABLE TODAY
- RSA
- Diffie–Hellman
- Elliptic-Curve Cryptography (ECC)
Broken by Shor's algorithm on a sufficiently large quantum computer.
QUANTUM-RESILIENT
- Lattice-based
- Code-based
- Hash-based
- Multivariate
The goal: secure data for the quantum future — protecting long-term confidentiality and integrity in a post-quantum world.
CORE PRINCIPLE
Crypto agility is the foundation
Crypto agility is the ability to change cryptographic algorithms without redesigning the systems that depend on them. It is the central design principle of everything that follows — the difference between a one-time scramble and a security posture that keeps adapting as standards evolve.
“Quantum-safe security is not a product you install — it is an architecture you design for change.”
Swap, don't rebuild
Algorithms are replaced behind stable interfaces, leaving application code untouched.
Decoupled by design
Cryptography lives in an abstraction layer, not scattered through the codebase.
Built to keep evolving
New standards drop in as they mature, with no disruptive migration each time.
OUR ENGAGEMENT MODEL
A five-phase path to quantum readiness
1
Cryptographic
Reality Mapping
Discover every algorithm in use
2
Risk
Classification &
Prioritization
Rank systems by real exposure
3
PQC-Ready
Architecture
Design for cryptographic change
4
Controlled PQC
Introduction
Roll out quantum-safe algorithms
5
Continuous
Crypto Evolution
Keep adapting as standards shift
THE BUILDING BLOCKS
Replacing RSA & ECC with quantum-safe families
RSA and ECC give way to lattice-, hash-, and code-based cryptography — each chosen to fit the assurance, performance, and storage profile of clinical and regulatory environments.
Lattice-Based
BASED ON
Learning With Errors
Efficient, fast, and practical. The workhorse for TLS, VPNs, and high-volume healthcare APIs.
EVERYDAY
ENCRYPTION
Hash-Based Signatures
BASED ON
Hash functions
Extremely strong, conservative security. Ideal for long-term trust, firmware signing, and medical-device updates.
LONG-TERM
SIGNING
Code-Based
BASED ON
Error-correcting codes
Highly conservative assurance. Best for high-assurance key exchange where storage is not constrained.
HIGH ASSURANCE
WHERE IT APPLIES
Quantum-safe protection across the stack
The same crypto-agile foundation hardens every layer clinicians and patients rely on — from the session handshake to the inbox.
Key Exchange
Diffie–Hellman replaced by post-quantum KEMs to establish secure session keys.
Digital Signatures
RSA / ECDSA replaced by PQC signatures for authentication, integrity, and compliance.
PQC-Enabled HTTPS
TLS 1.3 hybrid key exchange protects portals, telemedicine, and healthcare SaaS.
Secure Email
PGP and S/MIME upgraded with PQC to protect prescriptions, lab reports, and clinician messaging.
Post-Quantum VPNs
Quantum-safe tunnels for hospital networks, remote clinicians, and medical IoT traffic.
One agile foundation.
Every layer covered.
WORKING EXAMPLE
A crypto-agile EHR, quantum-resilient by design
We implement crypto agility by decoupling cryptography from the EHR itself. The application never touches algorithms directly — it calls standardized crypto APIs — so encryption can change without changing application code or disrupting clinical workflows.
Patient data at rest
Encrypted with AES-256 for performance.
Encryption keys
Protected by hybrid KEM — classical plus post-quantum key encapsulation.
Records & audit logs
Signed with quantum-resilient digital signatures for long-term integrity.
HOW THE LAYERS DECOUPLE
EHR Application
No cryptographic logic
Standardized Crypto API
Stable interface — the swap point
Crypto-Agile Engine
Hybrid classical + post-quantum
Data, Keys & Signatures
AES-256 · hybrid KEM · PQC signatures
PROOF IN A SANDBOX
Validating EHR data protection end-to-end
Using anonymized test data in a sandbox EHR, we walk protection through the full lifecycle — and prove algorithms can change without redeploying the application.
1
Seed the sandbox
Anonymized test patient data loaded into an isolated EHR environment.
2
Encrypt at rest
Data at rest secured with AES-256.
3
Wrap the keys
AES keys wrapped using a hybrid classical + post-quantum KEM.
4
Secure the APIs
EHR APIs protected with hybrid TLS — classical + post-quantum key exchange.
5
Sign for integrity
Records and audit logs signed with quantum-resilient signatures.
6
Swap, live
Algorithms changed with no redeployment of the EHR application.
CLIENT DEMONSTRATION
What clients see, in a live environment
We demonstrate quantum-resilient EHR security on anonymized test data — making the abstract concrete and the protection observable.
Hybrid cryptography in parallel
Classical and post-quantum algorithms protecting the same data simultaneously.
Live algorithm switching
Cryptography changed in real time, with no downtime or redeployment.
Quantum-safe access & APIs
Clinician access and integrations operating under quantum-safe controls.
Audit evidence
Clear record of which algorithms protect which data, on demand.
CONCLUSION
Quantum risk is a long-term reality — not a sudden event.
We help organizations move early, safely, and strategically — building systems that stay secure as cryptography itself keeps evolving.