DEF CON 31 - Terminally Owned - 60 Years of Escaping - David Leadbeater

In this talk we will discuss the radio jailbreaking journey that enabled us to perform the first public disclosure and analysis of the proprietary cryptography used in TETRA (Terrestrial Trunked Radio): a standard used globally by government agencies, police, prisons, and military operators as well as critical infrastructure such as SCADA telecontrol of oil rigs, pipelines, transportation and electric and water utilities.

For decades, the underlying algorithms have remained secret under restrictive NDAs prohibiting public scrutiny of this critical technology. …

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