Adam Back [ARCHIVE] on Nostr: 📅 Original date posted:2015-02-20 📝 Original message:I saw there was some ...
📅 Original date posted:2015-02-20
📝 Original message:I saw there was some discussion on this topic on the bitcoinj list.
(I dont think I can post there without subscribing probably.)
Someone had posted about the lack of privacy provision from the
current implementation parameters and real-world factors similar to
described in this academic paper
http://eprint.iacr.org/2014/763.pdfMike had posted a detailed response on the topic on why its complex
and becomes bandwidth inefficient to improve it usefully.
https://groups.google.com/forum/#!msg/bitcoinj/Ys13qkTwcNg/9qxnhwnkeoIJThe basic summary of which I think is that its not even intended to
provide any practical privacy protection, its just about compacting
the query for a set of addresses.
So I was wondering what about changing to committing a bloom filter of
the addresses in the block. Its seems surprising no one thought of it
that way before (as it seems obvious when you hear it) but that seems
to address the privacy issues as the user can fetch the block bloom
filters and then scan it in complete privacy. (Someone appeared on
bitcoin wizards IRC a while back and made this observation.)
>From there its a question of fetching the candidate TXOs.
Am I missing anything?
Adam
Published at
2023-06-07 15:30:42Event JSON
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"content": "📅 Original date posted:2015-02-20\n📝 Original message:I saw there was some discussion on this topic on the bitcoinj list.\n\n(I dont think I can post there without subscribing probably.)\n\nSomeone had posted about the lack of privacy provision from the\ncurrent implementation parameters and real-world factors similar to\ndescribed in this academic paper\n\nhttp://eprint.iacr.org/2014/763.pdf\n\nMike had posted a detailed response on the topic on why its complex\nand becomes bandwidth inefficient to improve it usefully.\n\nhttps://groups.google.com/forum/#!msg/bitcoinj/Ys13qkTwcNg/9qxnhwnkeoIJ\n\nThe basic summary of which I think is that its not even intended to\nprovide any practical privacy protection, its just about compacting\nthe query for a set of addresses.\n\nSo I was wondering what about changing to committing a bloom filter of\nthe addresses in the block. Its seems surprising no one thought of it\nthat way before (as it seems obvious when you hear it) but that seems\nto address the privacy issues as the user can fetch the block bloom\nfilters and then scan it in complete privacy. (Someone appeared on\nbitcoin wizards IRC a while back and made this observation.)\n\n\u003eFrom there its a question of fetching the candidate TXOs.\n\nAm I missing anything?\n\nAdam",
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