TETRA Algorithm Set B: Security Analysis of New Cryptographic Standards

Explore a detailed security analysis presentation from the 38th Chaos Communication Congress examining the latest TETRA (Terrestrial Trunked Radio) revision and its new cryptographic cipher suites introduced in 2022. Learn about practical attacks on the TEA7 cipher, which despite using a 192-bit key only provides 56 bits of security, and discover the implications for critical infrastructure and civilian applications. Examine the improvements and shortcomings of the new standard, including updates on TEA3 cryptanalysis and its successor TEA6. Understand how the new authentication suite (TAA2) and Air Interface Encryption algorithms (TEA set B) address previous vulnerabilities identified in TETRA:BURST, including backdoored algorithms, lack of cryptographic integrity guarantees, and pseudonymized identity decryption. Gain insights into the security considerations for emergency networks, military communications, and critical infrastructure as this technology continues to play a central role in society.