Your situation What's probably happening today
- Each new integration reopens the same discussion. How do we build the PIN block? Which key variant do we use? How do we compute the MAC? The same debates in every project, with no clear owner.
- Features depend on a few specialists. Only two or three people know how to invoke the HSM correctly. If they're on vacation, the sprint falls apart.
- The auditor found something off. A PIN traveling in the clear between two internal components, a reused key, a MAC that isn't being validated. Silent errors that had been in production for months.
- You're launching a new product. New card, new channel, new integrator — and cryptography becomes a bottleneck again instead of a resolved component.
Why it's hard to solve internally Payments cryptography doesn't tolerate silent errors
Brilliant development teams ship code that works — and can still
spend months generating PIN blocks with the wrong format,
reusing keys across environments, or computing MACs with the
wrong variant. The test passes. The system responds. And the
problem only surfaces when an auditor reads the traces or when a
fraud isn't stopped.
Deep knowledge of payments symmetric cryptography doesn't scale
through books. It accumulates through real projects. Your team
can learn — but it's not reasonable to make them carry that
curve while they also have to deliver the roadmap.
What we deliver A clean API in front of the complexity
Your team invokes understandable methods, without manipulating
bytes or keys:
validatePin(pan, pinBlockEncrypted, scheme) — validates a PIN without the developer touching the key.verifyCvv(pan, expirationDate, serviceCode, cvv) — verifies CVV/CVV2 against the HSM.wrapKey(keyId, underZmkId) — securely packages a key for exchange.mac(messageBytes, keyId, algorithm) — generates or verifies a MAC ARPC unambiguously.
Keys never leave the HSM. The middleware applies access control,
logs full audit trails, exposes metrics and integrates with your
observability platform. It publishes services over REST or
ISO 8583 depending on your environment.
Specific services on the same base When the middleware translates into a concrete product
The same middleware layer supports two services that institutions
often request as standalone deliverables:
- 3D Secure (3DS) — implementation for issuers and acquirers. Integration with the brand directory, cryptographic session management and observability over approval rates.
- Dynamic CVV — additional protection over the card portfolio with rotating CVV generation and validation. Designed to reduce the impact of fraud with compromised data.
Both are delivered with the same discipline as the base
middleware: keys inside the HSM, operating and developer manuals,
and reproducible benchmarks before going to production.
What changes for your team What your team notices the first week
- Your developers deliver on time: cryptography stops showing up as sprint risk.
- New team members become productive in days.
- Audits find structured logs, access control and verifiable key handling.
- Throughput is predictable: the middleware is load-tested before going to production.
Platforms What it runs on
The middleware connects to the sector's leading HSMs (Utimaco,
HST, Futurex) and is first
validated against simulators in our lab so testing doesn't consume
time from your production HSM. The transport layer is decided by
your reality: ISO 8583 if your core requires it, REST when
consumers are modern applications.
Next step Tell us which flow is blocking you the most today
A 30-minute conversation about the concrete case on your desk.
Enough to know whether it makes sense to continue.
