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0 pointsusr11064y ago0 comments

Where does the keyspace come from? rot13 has no keys.

Of course you could do rot2 - rot24 and all the other combinations. Is that were the factor 25 comes from?

The deep inspection needs to look only at the first couple of bytes of each new a TCP connection. So it's not that disrupting. After 2 bytes you can already skip for a vast fraction of other traffic.

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jortr0n4y ago

You'r right, the rot13 command is a shell wrapper around: ` exec /usr/bin/caesar 13 "$@" ` Forcing the key to be 13. You can obviously invoke /usr/bin/caesar with any of the 25 keys.

hedora4y ago

The underlying tool (caesar) will infer the key if you forget to pass it in. It does so without brute forcing.

Applying this to DPI wouldn't be too bad.

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