mdani 6 minutes ago

The article mentions a code breaking software - any idea what that is? I have a coded letter that is about 250 years old, but it is written in Devanagari script so letter frequency isn't straightforward. Please do suggest any tools that can help in decoding.

Molitor5901 7 hours ago

I sat through a briefing last week about quantum encryption and the threat that quantum computing poses to encryption in use today. It was stressed that nation states are hoovering up encrypted data now in order to decrypt later with quantum computing. Much the same way America decrypted old soviet encrypted data. I wonder if it will take as long and if anyone will still be alive to make use of that data.

  • fpoling 6 hours ago

    If quantum computing would progress just like in the last 30 years it may take 300 years before it can be useful.

    https://eprint.iacr.org/2025/1237.pdf

    • 3eb7988a1663 3 hours ago

        As has been previously pointed out, the 2001 and 2012 quantum factorisation records may be easily matched with a dog trained to bark three times [33]. We verified this by taking a recently-calibrated reference dog, Scribble, depicted in Figure 6, and having him bark three times, thus simultaneously factorising both 15 and 21. This process wasn’t as simple as it first appeared because Scribble is very well behaved and almost never barks. Having him perform the quantum factorisation required having his owner play with him with a ball in order to encourage him to bark. It was a special performance just for this publication, because he understands the importance of evidence-based science.
      
      I look forward to more dog-based science.
    • wat10000 5 hours ago

      If you know a better way to factor 35, I’d like to hear it.

    • lbourdages 5 hours ago

      Thanks for sharing this, great read.

butlike 2 days ago

It's fascinating to me that the keywords were further encoded such that even if the message was deciphered, the strategic plans could not be acted upon.

  • avidiax 2 days ago

    It was quite common to have a codebook that might list several numbers or words used to substitute for places, individuals, actions, etc.

    These also existed for corporate entities. A concern might have their own codebook such that the telegraph office would not be privy to their internal business.

    They would also use codebooks as a type of compression, since the telegraph company charged less for sending English words as opposed to enciphered characters, and obviously, there are many uncommon words that could substitute for longer common phrases.

    https://en.wikipedia.org/wiki/Codebook

    https://en.wikipedia.org/wiki/Commercial_code_(communication...

brcmthrowaway 2 hours ago

So many machninations amongst the elites even hundreds of years ago. And imagine today, with the current set of goons in power. It's amazing they've survived for so long.