100 sats \ 1 reply \ @rijndael 13 Sep 2022 \ parent \ on: SpiralBTC: Private Bitcoin block explorer using homomorphic encryption bitcoin
Hey @blintz, question for you: I'm reading the paper and there are the query-independent public parameters that in SPIRAL are larger than in other PIR schemes. Can those parameters be shared among clients, or do they need to be client-specific? I'm looking at the 125MB parameter size for the StreamPack construction and thinking it would be nice to just bake that into the client software. I'm only on the first section of the paper, so maybe that's explained later.
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20 sats \ 0 replies \ @blintz 13 Sep 2022
No, one downside of our scheme is that the public parameters are larger, and they must be per-client and stored on the server.
For reference, both our Bitcoin and Wikipedia demos actually use the SpiralPack scheme, which has much smaller public parameters (~8 MB for btc.usespiral.com).
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