Mission Critical encryption
for voice and data transmissions

Stay safe with TETRA TEA3 strong security encryption, keeping voice & data secure between a sender and the recipient’s devices.

Protecting sensitive information
from unauthorised access

Stay safe with TETRA TEA3 strong security encryption, keeping voice & data secure between a sender and the recipient’s devices.

The evolution of smarter encrypted mission critical
voice & data communication

TETRA TEA3 is a stream cipher algorithm used for the encryption of voice and data traffic on the Entropia TETRA network.

TETRA TEA3 Encryption is a strong and efficient cipher that provides good protection for voice and data traffic on Entropia’s networks. The open-sourcing of the algorithm has further improved its security, and it is now a more robust and reliable means of protecting sensitive communications.

TEA3 is a 128-bit block cipher with a 128-bit key. It operates on 64-bit words, which are processed in pairs. The encryption process involves repeated rounds of mixing and adding. The mixing operation is based on a simple XOR and shifting operation, while the adding operation involves adding the result of the mixing operation to a constant value. The key is used to control the mixing operation.


TETRA encryption algorithms are designed to provide strong cryptographic protection against eavesdropping and interception.

Key Features of TEA3 on Entropia


High Speed: TEA3 is a very fast stream cipher, making it suitable for real-time encryption of radio transmissions.

Strong Security: TEA3 is a relatively secure stream cipher, and it has not been broken by cryptanalysts.

Hardware Implementation: TEA3 is well-suited for hardware implementation, making it a good choice for embedded systems.

Benefits of Using TEA3 on Entropia


Protects Sensitive Data: TEA3 helps to protect sensitive data transmitted over Entropia's TETRA radio networks from eavesdropping and interception.

Ensures Confidentiality: TEA3 ensures that only authorised parties can access and understand the transmitted data.

Maintains Data Integrity: TEA3 helps to ensure that the data is not corrupted or tampered with during transmission.

Applications of TEA3 on Entropia


Voice Encryption: TEA3 is used to encrypt voice traffic, ensuring that conversations are not intercepted by unauthorised parties.

Data Transmission:TEA3 is used to encrypt data transmissions, protecting sensitive information from unauthorized access.

Comprehensive TETRA Solutions. Explore our Range of Radios and Accessories

As a leading provider of TETRA communication solutions, we offer a comprehensive selection of high-performance TETRA radios and accessories to equip your team for success.

At Entropia, we understand the critical nature of seamless and secure communication in mission-critical environments. That's why we offer a robust portfolio of high-performance TETRA radios and accessories, designed to empower your team and optimise your operations.


Working with you:
No obligation demonstration

Entropia offers a comprehensive suite of communication solutions designed to empower your business and streamline operations. We invite you to experience the benefits firsthand through our no-obligation demonstration.

During the demonstration, we'll showcase Entropia's innovative devices and functionalities specifically aligned with your company's requirements. This personalised approach ensures you gain a clear understanding of how our solutions can directly benefit your business processes and personnel.

Our team is dedicated to ensuring you get the most out of Entropia's offerings. We'll guide you through the functionalities and answer any questions you may have, empowering you to make informed decisions.


Request a no-obligation demonstration today and discover how Entropia's innovative communication solutions can revolutionise your business operations.




Working with you: No obligation Entropia systems demonstration

Save costs, and transform business models

Contact us today to schedule a personalised consultation with a member of our experienced customer service team. During this discussion, we will delve into your unique needs and goals, and demonstrate how Entropia's solutions can help you.


Get In Touch to book your no obligation trial