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Post-Quantum Wrapper Module
A tested starting point for post-quantum wrapper module reduced repeated setup work.
We built a practical FinTech solution combining cryptograpatient health informationc abstraction layer, hybrid signature deployment, and automated key lifecycle. The project delivered 100% NIST Alignment and 0 Service Downtime.
Trusted by teams building ambitious products
High-speed banking core managing $2B+ in assets requiring private cryptograpatient health informationc protection.
Security Architect + 2 Cryptography Engineers + DevSecOps Lead embedded within the Core System unit.
Moving from static RSA/ECC dependencies to a modular, post-quantum ready key management system (KMS).
A practical solution designed around the client’s existing tools, teams, and day-to-day workflow.
The client’s Series-C banking core was built on standard Elliptic Curve Cryptography (ECC). While currently secure, these algorithms are business-widely vulnerable to emerging Shor’s algorithm-based quantum attacks, exposing them to Harvest Now, Decrypt Later (HNDL) threats.
The biggest issues were hndl attacks, trust erosion, and algorithm lock-in. The team needed a faster, clearer way to manage the work while keeping the right checks in place.
Hard-coded ECC required manual refactoring of smaller independent services to change security primitives.
New algorithms (Kyber/Dilithium) are introduced via a central automation layer with zero code changes.
Subject to HNDL risks and future-obsolescence of current signature schemes.
Hybrid-mode encryption ensures immediate post-quantum security without breaking older support.
Required core service restarts and downtime for key database re-encryption.
Cloud-based rolling updates with concurrent key-version support ensured 100% uptime.
Injected hand-optimized assembly code for NIST algorithms to minimize the auth overhead on mobile devices.
Ensured post-quantum entropy is sourced from FIPS 140-3 Level 3 hardware security modules.
Every transactional signature now carries a version data tag, allowing for consistent historical auditing.
Tested foundations helped the team spend less time on setup and more time on the parts that made this product useful.
A tested starting point for post-quantum wrapper module reduced repeated setup work.
Reusable work for crypto-agility platform module let the team focus more time on the client’s specific needs.
This made it easier to add entropy monitoring platform without rebuilding common foundations.
A tested starting point for finops safety controls reduced repeated setup work.
A straightforward before-and-after view of what changed for the team and their customers.
Successfully transitioned 100% of core auth services to NIST-standard post-quantum primitives.
Maintained sub-5ms overhead even with complex post-quantum hybrid signatures.
Execution of the rotation policy across all digital assets without a single customer logout event.
Coretus didn't just patch our security. they future-proofed our control . We are the first Series-C neobank to achieve NIST-standard post-quantum readiness with zero impact on our user experience or transaction speed.