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Encryption made for police and military radios may be easily cracked
An encryption algorithm can have weaknesses that could allow an attacker to listen in.
But now the same researchers have found that at least one implementation of the end-to-end encryption solution endorsed by ETSI has a similar issue that makes it equally vulnerable to eavesdropping. In the case of the E2EE, the researchers found that the implementation they examined starts with a key that is more secure than ones used in the TETRA algorithms, but it gets reduced to 56 bits, which would potentially let someone decrypt voice and data communications. Advances in computing power make it less secure now, so when the Dutch researchers exposed the reduced key two years ago, ETSI recommended that customers using TEA1 deploy TCCA's end-to-end encryption solution on top of it.
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