Lightweight VoLTE Encryption Solution
Ensuring Your Communication Security
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Quick access to everything you need to know
Products & Pricing
KMS, F70, D51 devices with specifications and package pricing
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Solution Principles
Technical architecture, encryption algorithms and key system design
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FAQ
Frequently asked questions covering general, business and technical topics
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Get in touch for inquiries, demos, partnerships and technical support
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Solution Overview
How our VoLTE encryption solution works
SIM/eSIM Card
Provided by the carrier, VoLTE service must be enabled.
KMS
Provided by us with U-key. It manages the root key, generates user keys for each communication number, and distributes them to terminals via scanned QR codes.
5G VoLTE Encryption Phone
Provided by us, with multiple models available for selection. Based on the Unisoc chipset’s VoLTE interface authorization, deep customization at the modem and phone communication software levels.
We provide the VoLTE encryption call solution without any support and detecting from carriers, avoiding the interception from carrier’s network or 3-party attackers. You only need normal SIM cards to make encrypted calls, directly use the carrier’s VoLTE service without deploying any server.
Product Lineup
Three core devices working together for complete encrypted communication
Key Management
KMS
Offline key management system with U-key secure storage
5G Smartphone
F70
5G VoLTE encryption large-screen smartphone
5G Rugged Phone
D51
5G VoLTE encryption rugged & explosion-proof smartphone
Solution Highlights
Key technical advantages of our VoLTE encryption architecture
Build Your Own Key System
Possess your own KMS root key to build the trust root for your encryption system, eliminating concerns about communication interception by device manufacturers.
IBE Key Exchange
SAKKE/ECCSI identity-based encryption enables unidirectional key exchange. No online KMS needed during calls — lighter, more secure, no single point of failure.
TEE Secure Storage
User private keys encrypted via Trusted Execution Environment. Even if the phone is stolen, attacker can only obtain encrypted keys — cracking requires breaching TEE.
Three Steps to Enjoy VoLTE Encryption
Start your end-to-end encrypted VoLTE call & SMS in 5 minutes
Get your SIM cards, KMS and VoLTE Encryption Terminals Ready
Prepare SIM cards with VoLTE service enabled, KMS with U-key inserted, and your encryption phone.
Scan QR Code from KMS
Use the terminal to scan the QR code from the KMS to obtain the KMS public key and terminal identity key.
Enjoy Your Encryption Call
Make VoLTE calls as usual. Encryption is automatic and transparent — voice and SMS are protected end-to-end.
Frequently Asked Questions
Questions about the VoLTE encryption solution
What are the advantages of this solution compared to other VoLTE encryption solutions?
Strong adaptability, short call setup time, lightweight deployment, and root key controlled by the end user.
What equipment needs to be purchased for a standard configuration?
One KMS and several phones. F70 for general use, D51 for outdoor/explosion-proof scenarios.
Why was AES-CTR mode chosen instead of AES-GCM?
GCM causes RTP payload to become longer, affecting VoLTE compatibility. AES-CTR preserves payload size.
How is the risk of Key Escrow on KMS mitigated?
KMS root key is encrypted and stored in U-KEY. Both KMS and U-KEY must be stolen to compromise keys.
Ready to Secure Your Communications?
Get in touch with our team for product inquiries, demos, and partnership opportunities
