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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 improvements and shortcomings in the new standard. Gain insights into the TEA3 cryptanalysis findings, including a suspicious feature and its parallel with successor TEA6. Understand how the new authentication suite (TAA2) and Air Interface Encryption algorithms (TEA set B) impact emergency networks and critical infrastructure security. Examine the implications of previously identified vulnerabilities from TETRA:BURST, including message integrity issues and user identity pseudonymization, and evaluate whether the new standard effectively addresses these security concerns for this crucial technology used by government agencies, police, military, and critical infrastructure worldwide.
