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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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validator_client/slashing_protection/Cargo.toml
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@@ -19,4 +19,5 @@ serde_utils = { path = "../../consensus/serde_utils" }
filesystem = { path = "../../common/filesystem" }
[dev-dependencies]
lazy_static = "1.4.0"
rayon = "1.4.1"