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Grrl Power #1377 - Lett hackers

🕑 Added 2025-07-28 10:00:11 +0000 UTC
Grrl Power #1377 - Lett hackers

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Mark Magagna

Posting this here because I'm getting 'Forbidden' messages on the website again. This was a response to a post saying that we can do truly secure messages, such as with a one-time pad. This is true. A one time pad is secure. You break down the message into bits, and combine it (using a simple operation called XOR) with a truly random bit stream. The combination is also truly random. Someone who has the same random bit stream can decode the message by using the same operation (XOR) again. Very simple, and completely unbreakable unless you possess that random bit stream. However. It requires a source of truly random bits that is the same length as the message you are sending. We have a number of sources that we think are truly random, but are we correct? The aliens have stuff, e.g. FTL travel and magic. The people working on whether bit sources are random have no idea how those work. What if things like cosmic rays aren't actually random, they just look like it? Oh, and after you get the one time pad, you have to keep it secure at your source and also transport it securely to the destination of the message you're going to encrypt. No, you can't send it via radio; that uses up as many bits as you would be sending. Since the bit stream is truly random, it cannot be compressed (if you could, then it's not truly random). So the storage requirements get pretty big. So yes, it's quite cumbersome. I'm not too sure of the security of using paper actually, depending on just how sensitive alien sensors are. Could they read the location of the ink deposits on the paper right through the ceiling?

eddi_TBH

Any government needs to be watched carefully by outsiders. None are perfect. And sometimes end runs need to be made.


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