> The Midnight Blue researchers have since demonstrated real-life exploitations of some of the vulnerabilities, for example at the 2023 Blackhat Conference in Las Vegas (USA). They have shown that TETRA communications secured with the TEA1 encryption algorithm can be broken in one minute on a regular commercial laptop and in 12 hours on a classic laptop from 1998 [III].
In 1998, the EFF built a custom DES Cracker[0] for around $250k that could crack a 56-bit DES message in around 1 week. As was the custom at the time, they published the source code, schematics, and VHDL source in a printed book to evade (and, I guess, mock) export restrictions.
The EFF's legal challenge was essentially that if crypto is a munition, then this printed book explaining the crypto is also at least as much of a munition, if not more so. They gave the judge the choice between deciding that a printed book is some sort of deadly tool, or deciding that crypto wasn't conceptually a munition. Strangely, the judge ruled in the EFF's favor.