Zymbit Released ZYMKEY 5 Security Module for Raspberry Pi
The hardware security module secures industrial IoT edge devices using encrypted I2C communication and physical tamper detection.
Updated on Oct. 11, 2026 in Cybersecurity
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Zymbit has released the ZYMKEY 5, a security module designed to protect credentials and data on Raspberry Pi systems including the Zero, 4, 5, and Compute Module lines. The hardware provides robust encryption and physical perimeter monitoring for edge and industrial IoT deployments.
Why it matters
As edge computing adoption grows, securing locally stored credentials and preventing unauthorized physical access to IoT hardware has become critical. This module provides a dedicated path for developers to implement hardware-level security without redesigning their entire system architecture.
The module offers 512 private/public key pairs and 128 external public key slots. It achieves 5ppm accuracy for its battery-backed real-time clock and supports a range of cryptographic standards, including ECDSA and AES-256.
The players
Zymbit
A developer of hardware security modules and secure edge compute solutions for industrial and IoT environments.
Raspberry Pi
A manufacturer of single-board computers widely utilized for education, prototyping, and industrial edge computing applications.
The details
The ZYMKEY 5 secures data by using an encrypted I2C interface—a serial communication bus—that relies on ephemeral elliptic-curve cryptographic keys to authenticate traffic between the module and the Pi. Physical security is handled by two independent perimeter-detection circuits that use a 12-pin JST connector to monitor external conductive enclosures or tamper switches. It occupies the first ten pins of the Raspberry Pi GPIO header, acting as a hardware root of trust for stored credentials.
Timeline
The ZYMKEY 5 was released in October 2026.
The Tech Race
The ZYMKEY 5 mirrors the role of the Trusted Platform Module (TPM) standard by providing dedicated cryptographic hardware for platforms that lack native, isolated secure-element storage. It specifically fills the security gap in industrial Raspberry Pi deployments where standard software-only encryption is insufficient.
Developers can purchase a single developer kit for $79, with bulk pricing scaling down to $42 per unit in 200-pack quantities. The module is available for immediate integration into projects requiring tamper-evident physical security and high-accuracy timekeeping.
The takeaway
Zymbit's latest hardware addresses the growing need for physical credential protection in the Raspberry Pi industrial ecosystem. Developers should monitor the company's documentation portal for firmware updates related to the supported cryptographic algorithm set.
Further reading
Learn more about securing hardware deployments at Cybersecurity.
Source note: This article includes information reported by LinuxGizmos.
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