Secure networking, from silicon to server.

Kasteon builds carrier-grade security infrastructure—from constrained embedded devices to full enterprise deployments—engineered around open standards, post-quantum cryptography, and zero-trust access control.

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Two products. One engineering discipline.

A deployable platform for organizations that need secure access today, and the underlying libraries for teams building it into their own products.

SecureAccess™

deployable platform

SDK, Agent, and Gateway that extend carrier-grade 5G authentication and IPsec encryption to any device, on any network—replacing VPN infrastructure, PKI, and carrier integration with SIM-based security that manages itself.

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KA Libraries

embedded-first

Post-quantum cryptography, IKEv2/IPsec, and core networking, engineered to run on constrained MCUs—and, from the same codebase, up through Linux, macOS, and Windows. No platform-specific code required in your application layer.

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Built on open standards, not proprietary protocols.

Every component implements published 3GPP, IETF, and NIST standards—including post-quantum cryptography under FIPS 203/204/205—so systems built on Kasteon interoperate with standards-compliant infrastructure rather than locking you into a proprietary stack.