Unidirectional Secure Information Transfer via RabbitMQ
Marcel Maatkamp, Martin van Delden, Nhien An LeKhac

TL;DR
This paper explores using open source technology to securely and cost-effectively mirror message bus data over data diodes with end-to-end encryption, enabling secure transfer of sensitive information.
Contribution
It demonstrates that open source solutions can effectively mirror message bus data over data diodes with encryption, providing a practical, low-maintenance security-proof transfer method.
Findings
Successful mirroring of message bus data over data diodes
End-to-end encryption ensures data confidentiality
Open source approach reduces costs and complexity
Abstract
Protecting computer systems handling possible sensitive information is of the utmost importance. Those systems are typically air-gapped with data diodes to assure that no information can physically flow back. Traditional computer protocols like HTTP or SOAP which are normally used to transport information between computers are typical bi-directional communication protocols and are thus unsuitable to be used over a data diode. Currently the only commercially available protocols over a data diode sold by vendors are file-based protocols. Other protocols can be custom made but are expensive and proprietary. There are currently no open source solutions to stream data in a generic way over a data diode other than those file-based solutions. Purpose of the dissertation is to research if open source technology can be used to mirror the contents of a messagebus over a data diode to get a cost…
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