why
Two protocol worlds, one controlled payment flow.
ZVT2SumUp accepts ZVT commands from a till, translates supported operations into the SumUp API and maps the result deterministically back to the till protocol.
The desktop app, Windows service and diagnostic tools use the same gateway engine. The self-contained build needs no separate .NET installation.
features
For real interfaces, with safe boundaries.
ZVT 13.13
Native implementation of PA00P015 revision 13.13 with KORONA-compatible RAW APDUs and length-based framing.
SumUp bridge
Payment, reversal, full or partial refund, status, end-of-day closing and terminal pairing.
TCP and COM
Loopback as the safe TCP default, several controlled clients and serial operation with DLE escaping and LRC checking.
Payment safety
Integer cents, no automatic POST retries and explicit confirmation for operations with real financial effect.
Protected secrets
API and affiliate keys are protected with Windows DPAPI; sensitive values are stripped from errors and logs.
Verified releases
Manual updates verify HTTPS sources, SHA-256 manifest, EXE versions and smoke tests, with two-file rollback.
test safely
Simulate first, then execute deliberately.
The bundled till simulator makes ZVT responses visible without triggering a payment.
Real payments, refunds and end-of-day closings require separate, explicit confirmations.
technical data
Native Windows, traceable payments.
- Runtime
- .NET 10 · self-contained
- UI
- Windows Forms
- Protocol
- ZVT 13.13 · TCP · COM
- Secret protection
- Windows DPAPI
- Tests
- 42 deterministic · no real payment
- License
- MIT
$ git clone zvt2sumup
Source code, compatibility matrix, security model, SHA-256 checksums and releases are publicly available on GitHub.
ZVT2SumUp is an independent project and is neither operated nor officially supported by SumUp or KORONA.