On Fri, Jun 06, 2014 at 02:03:29AM -0700, Gregory Maxwell wrote: > On Fri, Jun 6, 2014 at 1:48 AM, Adam Back <a...@cypherspace.org> wrote: > > Advertising NODE BLOOM as a service sounds good. > > > > But the critique of bloom filters, I am not so sure prefix filters are > > better. Prefix filters offer questionable privacy tradeoffs in my opinion. > > Same problem as with stealth address proposed use of prefixes. > > > > All for scalability, efficiency and decentralization but not ideally at the > > expense of nuking privacy. The effects on privacy are cumulative, and > > affect everyone not just the user. Same pattern of local decision, global > > effect as with reused addresses. > > The performance Bytecoin/Monero/Fantom/etc. systems that use ECDH > addresses for all transactions seem to be suggesting that the prefixes > aren't really needed. > > At least with current system rules doing the ECDH for each transaction > seems pretty reasonable.
Yup. Obelisk's indexing is sufficiently fast that they hadn't even bothered making Dark Wallet store transaction information between sessions until recently. Prefix brute-forcing isn't yet implemented, although prefix filters is being implemented for lookups in general. (at the very least it gives the server operators some valuable plausible deniability) -- 'peter'[:-1]@petertodd.org 00000000000000003a68ee16d702ca5dd5547fb4aead910a004747cb06241dd6
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