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Satellite phones encryption attacked

About a month ago, Arts Technica ran an article about the encryption standards used by satellite phones that have been broken.

This is yet another exemple of a proprietary encryption system which appears to have been weakly designed and implemented.
Although they have only been able to break the communication from the Satellite to the phone and not the other way around, it should still be of concern for anyone using those phones to transmit sensitive information without additional security.
Even if the audio codec still needs to be reversed engineered, this should be the easy part of this attack!

Someone is likely to get a great PhD as the paper exposing this issuewas co-written by such student.

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