Ethereum 2.0 Common Crates

Rust crates containing logic common across the Lighthouse project.

Per-Crate Summary

attester/: Core logic for attesting to beacon and shard blocks.
block_proposer/: Core logic for proposing beacon blocks.
fork_choice/: A collection of fork-choice algorithms for the Beacon Chain.
state_processing/: Provides per-slot, per-block and per-epoch state processing.
types/: Defines base Ethereum 2.0 types (e.g., BeaconBlock, BeaconState, etc).
utils/:
- bls: A wrapper around an external BLS encryption library.
- boolean-bitfield: Provides an expandable Vec of bools, specifically for use in Eth2.
- fisher-yates-shuffle: shuffles a list pseudo-randomly.
- hashing: A wrapper around external hashing libraries.
- honey-badger-split: Splits a list in n parts without giving AF about the length of the list, n or anything else.
- int-to-bytes: Simple library which converts ints into byte-strings of various lengths.
- slot_clock: translates the system time into Beacon Chain "slots". (Also provides another slot clock that's useful during testing.)
- ssz: an implementation of the SimpleSerialize serialization/deserialization protocol used by Eth 2.0.
- ssz_derive: provides procedural macros for deriving SSZ Encodable, Decodable and TreeHash methods.
- swap_or_not_shuffle: a list-shuffling method which is slow, but allows for shuffling a subset of indices.
- test_random_derive: provides procedural macros for deriving the TestRandom trait defined in types.