Core Data Security Technology

Our proprietary patented technology, "Hash Chain," serves as the foundation for the "ultimate end-to-end data security from sensors to the cloud" delivered by our solution.

By linking data in a chained structure and encrypting it segment by segment during transmission, it proves data validity in real time, instantly detecting and eliminating communication tampering and spoofing to guarantee information "Confidentiality, Authenticity, and Integrity."

Furthermore, because the security verification process is completely isolated from the main CPU, it boasts overwhelming resilience, ensuring the entire system experiences zero delays or shutdowns even under heavy cyberattacks.

Existing issues of wireless data transmission in factories

Currently, in many factories, data transmission between sensors, actuators, etc. and control devices is performed in an exclusive environment and via wired communication, with no external Internet connection allowed for the purpose of maintaining confidentiality.

Here, wired communication is complicated by cables, and the diameter of the cable bundles around the control unit, where the greatest number of connections are concentrated, can be several tens of centimeters in diameter. The more connections there are, the more physical space is taken up by the cables, and the more time is required for fault detection and replacement.

For this reason, there have been attempts to realize wireless communication for some time, but the number of channels for wireless communication has exceeded the allowable range due to data transmission/reception between multiple sensors and actuators and control devices, and it has been determined that a wireless connection is not feasible in reality. Furthermore, the risk of information leakage to the outside is extremely high in wireless data transmission, and together with the problem of the number of channels, this is a major issue.

Hash Chain: Guaranteeing Confidentiality, Authenticity, and Integrity in High-Speed Real-Time Communications

Our proprietary security communication protocol guarantees "Confidentiality, Authenticity, and Integrity" simultaneously at the communication level without putting load on the main CPU during high-speed 1ms interval communications.

• Ensuring Confidentiality (Blocking Eavesdropping and Data Leaks)
  The entire segment is encrypted and transmitted using an "AES key" pre-shared securely via quantum-safe methods such as PQC (Post-Quantum Cryptography).
  Even if eavesdropped on the communication path, data leakage is completely prevented.
• Proving Authenticity (Immediate Exclusion of Spoofing and Attacks)
  When calculating the hash value, it includes a "Seed value" that is securely shared in advance and never sent over the communication data stream.
  Additionally, a "Device Unique ID" is embedded at the start of communication (the initial segment) to reliably identify the originating sending device.
  Attackers attempting Man-in-the-Middle (MitM) attacks cannot generate valid hash values because they do not know the Seed. The receiver's recalculation identifies "which sending device the data originated from," instantly flagging and excluding fake segments.
• Proving Integrity and Continuity (Detecting Tampering and Missing Data)
  Starting from the established origin (Unique ID), the hash value of the previous segment is sequentially embedded into the "next segment" to create a chain.
  By recalculating and comparing hash values on the receiving end, it conclusively proves segment by segment that the data is "correct sequential data" free from tampering, packet loss, or sequence errors.

By completing the verification process at the communication layer without going through the application layer, it achieves both low-load, real-time autonomous control and exceptionally high resilience.

Hash Chain Modules

• Slave Evaluation Version

• Size: 32mm x 32mm
• Wired LAN / Wireless LAN Supported
• Wired LAN, power, and sensor input signals accepted via pins

• Master Evaluation Version

• Size: 85mm x 85mm
• Wired LAN / Wireless LAN Supported
• Power and sensor input signals accepted via pins

Hash Chain Use Cases

Use Case 1
In-Device Wireless Communication

Securing in-device wireless communication achieves both reduced wiring space and lower costs alongside highly reliable remote monitoring.
Sensor communications within the device are converted to wireless using Hash Chain, transmitting only validated data to the control CPU, while raw data can be saved to local servers such as distributed file systems.
Furthermore, integrating from the master to the cloud via blockchain enables tamper-proof remote monitoring and data protection from external offices.

Use Case 2
Manufacturing Proof Traceability

Tamper-proof manufacturing performance data builds a robust foundation of trust secured from the physical layer.
Slaves are deployed on equipment and sensors at each manufacturing step, encrypting and chaining production and inspection data sequentially at every phase using Hash Chain.
Aggregating this data into the MES (Manufacturing Execution System) via the master enables "tamper-proof manufacturing proof," confirming that components and products were crafted through correct procedures.
This delivers robust traceability without burdening system overhead, dramatically elevating quality assurance reliability.

Use Case 3
High-Security Single-Channel Wireless Network

Wirelessly connects numerous devices simultaneously over a "single channel" while preventing takeovers and runaways caused by spoofed commands.
In ad-hoc wireless environments such as drone swarms and smart mobility where devices connect directly, Hash Chain secures communications between slaves and the master.
Even in congested radio frequency environments, our proprietary protocol connects multiple devices using just one channel to enable secure network architecture.
Fake control commands are instantly detected and rejected at the 1ms level, preventing accidents caused by remote hijacking while ensuring reliable automated multi-unit operation.