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Minify slashing protection interchange data (#2380)

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## Issue Addressed

Closes #2354

## Proposed Changes

Add a `minify` method to `slashing_protection::Interchange` that keeps only the maximum-epoch attestation and maximum-slot block for each validator. Specifically, `minify` constructs "synthetic" attestations (with no `signing_root`) containing the maximum source epoch _and_ the maximum target epoch from the input. This is equivalent to the `minify_synth` algorithm that I've formally verified in this repository:

https://github.com/michaelsproul/slashing-proofs

## Additional Info

Includes the JSON loading optimisation from #2347
This commit is contained in:
Michael Sproul
2021-06-21 05:46:36 +00:00
parent b84ff9f793
commit 6583ce325b
11 changed files with 441 additions and 95 deletions
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@@ -5897,6 +5897,7 @@ name = "slashing_protection"
version = "0.1.0"
dependencies = [
"filesystem",
"lazy_static",
"parking_lot",
"r2d2",
"r2d2_sqlite",