In light of the recent plane crash in Pakistan, reports suggest that it will take 6-7 months to decode the black box.
The company that made the black box surely knows how to decrypt their encryption, so why would it take so long?
Also, assuming the encyrption is super-complicated, what sensitive data would warrant such encryption? Is it just voice recordings, or something more?
In: Technology
There are two parts –
1) Flight data recorder which records hundreds of parameters for last 25hours (new models). It does that in raw data (timestamps, numerical parameters etc).
2) Cockpit voice recorder which records the boom headset microphones and a dedicated microphone channel along with timestamps upto 2hours.
Now in such cases the post crash fire and the impact itself damages the structure and maybe data ports etc. So the technical team of the manufacturer have to somehow extract the data as much as possible and verify the integrity if the data, match the the timestamps of both the recorders and produce the files in readable format for the investigators.
All this effort takes quite a while aa you can imagine.
The final output which investigators use to create an analysis video looks like [this.](https://youtu.be/DpZzwcDyaDY)
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