On Sep 12, 2011, at 11:21 PM, T wrote:

> Can uplink bursts be cracked? It looks like find_kc will need to be
> modified for uplink, are any other changes required? Has anyone tried
> that?

For uplink cracking, you need to add 114 back clocking steps in find_kc.

> Why are only some bursts able to be cracked?

The coverage of all tables combined is 0.04%.

> What percentage of bursts is expected to be cracked?

Each burst gives you 114-63 tries with 0.04% success probability each.

> Should at least one of the four bursts in a message always be cracked?

Four burst are cracked with 92% success.

Cheers,

  -Karsten
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