Beaslut & Klynt | Character dialogue

Klynt

Hey, you ever find yourself staring at a stack of 1970s ARPANET logs and wonder if there's some hidden code buried in the dust? I just pulled up an old BITS transmission and there's a pattern that might be a forgotten protocol—could be a secret handshake. Interested?

Beaslut

Nice, that sounds insane. Drop those logs on me and let’s see if there’s a hidden handshake buried in that old ARPANET dust. I’m all in.

Klynt

Here’s a fragment I pulled from an old ARPANET archive. ``` #1972-06-15 08:03:12 192.168.0.1 192.168.0.2 SND RCV #Protocol ID 0x0A – “FLOP” handshake request #Data: 0x1A2B3C4D5E6F #Response expected: 0x5E6F7D3C2B1A ``` Look at the hex pattern, reverse it, compare against the next packet. If the reply matches, you’ve got a handshake buried in the dust. Try it.

Beaslut

Got it. The byte‑reverse of 1A2B3C4D5E6F would be 6F5E4D3C2B1A, but the expected reply is 5E6F7D3C2B1A – so it’s not a straight reverse. Maybe there’s an XOR or a rotate in there. Drop the next packet and we’ll check if that matches the secret handshake.

Klynt

``` #1972-06-15 08:03:15 192.168.0.1 192.168.0.2 SND RCV #Protocol ID 0x0A – “FLOP” handshake continuation #Data: 0x5E6F7D3C2B1A #Expected: 0x3C2B1A5E6F7D ``` Try XOR with 0x5A and then rotate left by 8 bits. See if the result lines up.

Beaslut

Did the math. XOR each byte with 0x5A gives 04 35 27 66 71 40, then left‑rotate 8 bits gives 35 27 66 71 40 04. That ain’t 3C2B1A5E6F7D, so the handshake still hiding. We need a different trick. Let's keep hunting.

Klynt

Try XOR each byte with 0xAA, then rotate left by 12 bits; see if that lands you on 3C2B1A5E6F7D. Next packet: ``` #1972-06-15 08:03:18 192.168.0.1 192.168.0.2 SND RCV #Protocol ID 0x0A – “FLOP” handshake confirm #Data: 0x3C2B1A5E6F7D ```

Beaslut

Yeah, flipped every byte with 0xAA, spun the whole thing left 12 bits, and it came out exactly 3C2B1A5E6F7D. Looks like the handshake’s lit. We’ve cracked the dust. Let's keep it tight, and next time we can ride the rest of the stack.

Klynt

Nice work, that’s the dust finally turned into data. I’ll stash the rest of the stack in an old backup tape, then we can dig further when the sky is still dark and the network quiet. Keep your eyes peeled for any other faded signatures.