‘Snap in’ security module designed for easy integration within a secure manufacturing environment,
  • Fully encapsulated

  • Single 30-pin connector

  • Extended battery
  • Soft bind lock
  • Measured identity
  • Secure key storage and generation
  • Cryptographic services

  • Physical tamper sensors
  • Manufacturing tools for high volume encryption & programming


With BIP 32/39/44 HD wallet,
700 foreign and private/public key slots,
enhanced security features and …..

Easy integration within a secure manufacturing environment.

Zymbit provides services, tools and processes that help manufacturers transition designs to volume manufactured product quickly and securely.

Tools that Simplify Integration

HSM4 Developer Kit

  • Everything you need to develop with HSM4.
  • Works with Raspberry Pi and NVIDIA Jetson Nano.
  • CAD files available for motherboard. 

Software Resources

  • API’s for Python, C++, C
  • Support for Ubuntu and Raspberry Pi OS
  • Getting started guides
  • How-to examples for disk encryption….

Hardware Resources

  • PCB footprint, schematic symbol, 3D models
  • Altium Designer & CircuitStudio
  • KiCAD
  • Eagle
  • Mechanical drawings

HSM4 protects credentials, data and IP
from physical and digital attacks.


Essential Security with Simple API


Measured System Identity & Authentication

  • Unique ID created from multiple device-specific measurements.
  • Authentication required to activate cryptographic services.
  • Permanent and temporary binding modes.
  • Custom input factors available to OEMs.

Data Encryption & Signing

  • Strong cipher suite includes ECDSA, ECDH, AES-256, SHA256
  • AES-256 encrypt/decrypt data service
  • TRNG, suitable seed for FIPS PUB 140-2, 140-3 DRNG.
  • Integrates with TLS client-side certificates

Secure Key Generation & Storage

  • Generates and stores key pairs.
  • Stored in tamper resistant silicon.
  • ZYMKEY4, HSM4 supports 3 private/public key pairs.
  • HSM6 supports 512 private/public keys, and 128 foreign public keys.
  • Learn more >

Secure Element + Security Supervisor

  • Multiple layers of hardware security.
  • Dual secure-processor architecture.
  • Secure microcontroller supervises access to cryptographic services.
  • Secure element delivers crypto-engine and key functions.  

Ultra-low-Power Operation

  • ARM Cortex-M0 microcontroller minimizes emissions footprint.
  • Enable years of secure operation from a single coin cell.
  • Delivers autonomous physical and digital security.

Real Time Clock

  • Battery-backed real time clock to support off grid applications.
  • 24-36 month operation, application dependent.
  • RTC clock service available to client applications.
  • 5ppm accuracy.

Secure Integrations with HSM4

Detailed examples provide step-by-step instructions on how to integrate Zymbit into your application.

Full Disk Encryption

  • Encrypt root file system with dm-crypt.
  • Protect data, applications and credentials.
  • HSM integrates seamlessly with LUKS key manager. 
  • Step-by-step guide with prewritten scripts that streamline the process.

LUKS Key Management Integration


Physical Tamper Detect

  • Two independent perimeter circuits  provide layered protection. 
  • User configured policies and actions.
  • Notify or destroy keys on perimeter-breach event.
  • Continuous operation with onboard battery.
AWS Qualified Device_Zymbit
TLS Client Certificate Authentication
  • Generate Zymkey secured client certs.
  • Bring Your Own Certificate or use AWS.
  • Attach custom policies.
  • Secure connect  client authenticated TLS
Just In Time Client Registration
  • Simplifies large scale fleet deployments
  • Lambda function client registration

Ready to Start?

Compare Security Modules


120 Cremona Drive,  Santa Barbara
California, 93117, USA
+1 (805) 481 4570