90bc364f9f
The prior-present `Ciphersuite::hash_to_F` was a sin. Implementations took a DST, yet were not require to securely handle it. It was also biased towards the requirements of `modular-frost` as `ciphersuite` was originally written all those years ago, when `modular-frost` had needs exceeding what `ff`, `group` satisfied. Now, the hash is bound to produce an output which can be converted to a scalar with `ff::FromUniformBytes`. A new `hash_to_F`, which accepts a single argument of the value to hash (removing the potential to insecurely handle the DST by removing the DST entirely). Due to `digest` yielding a `GenericArray`, yet `FromUniformBytes` taking a `const usize`, the `ciphersuite` crate now defines a `FromUniformBytes` trait taking an array (then implemented for all satisfiers of `ff::FromUniformBytes`). In order to get the array type from the `GenericArray`, the output of the hash, `digest` is updated to the `0.11` release candidate which moves to `flexible-array` which solves that problem. The existing, specific `hash_to_F` functions have been moved to `modular-frost` as necessary. `flexible-array` itself is patched to a fork due to https://github.com/RustCrypto/hybrid-array/issues/131.
Coordinator
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tendermintis an implementation of the Tendermint BFT algorithm. -
tributary-sdkis a micro-blockchain framework. Instead of a producing a blockchain daemon like the Polkadot SDK or Cosmos SDK intend to,tributaryis solely intended to be an embedded asynchronous task within an application.The Serai coordinator spawns a tributary for each validator set it's coordinating. This allows the participating validators to communicate in a byzantine-fault-tolerant manner (relying on Tendermint for consensus).
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cosigncontains a library to decide which Substrate blocks should be cosigned and to evaluate cosigns. -
substratecontains a library to index the Substrate blockchain and handle its events. -
tributaryis our instantiation of the Tributary SDK for the Serai processor. It includes theTransactiondefinition and deferred execution logic. -
p2pis our abstract P2P API to service the Coordinator. -
libp2pis our libp2p-backed implementation of the P2P API. -
srccontains the source code for the Coordinator binary itself.