99 lines
3.0 KiB
Nim
99 lines
3.0 KiB
Nim
import
|
|
tables, random,
|
|
chronos,
|
|
spec/[datatypes, crypto, digest, helpers], randao, ssz
|
|
|
|
type
|
|
ValidatorKind = enum
|
|
inProcess
|
|
remote
|
|
|
|
ValidatorConnection = object
|
|
|
|
AttachedValidator* = ref object
|
|
idx*: int # index in the registry
|
|
case kind: ValidatorKind
|
|
of inProcess:
|
|
privKey: ValidatorPrivKey
|
|
randaoSecret: Randao
|
|
else:
|
|
connection: ValidatorConnection
|
|
|
|
ValidatorPool* = object
|
|
validators: Table[ValidatorPubKey, AttachedValidator]
|
|
|
|
proc init*(T: type ValidatorPool): T =
|
|
result.validators = initTable[ValidatorPubKey, AttachedValidator]()
|
|
|
|
template count*(pool: ValidatorPool): int =
|
|
pool.validators.len
|
|
|
|
proc addLocalValidator*(pool: var ValidatorPool,
|
|
idx: int,
|
|
pubKey: ValidatorPubKey,
|
|
privKey: ValidatorPrivKey,
|
|
randaoSecret: Randao) =
|
|
let v = AttachedValidator(idx: idx,
|
|
kind: inProcess,
|
|
privKey: privKey,
|
|
randaoSecret: randaoSecret)
|
|
pool.validators[pubKey] = v
|
|
|
|
proc getValidator*(pool: ValidatorPool,
|
|
validatorKey: ValidatorPubKey): AttachedValidator =
|
|
pool.validators.getOrDefault(validatorKey)
|
|
|
|
proc signBlockProposal*(v: AttachedValidator, fork: Fork,
|
|
proposal: ProposalSignedData): Future[ValidatorSig] {.async.} =
|
|
if v.kind == inProcess:
|
|
await sleepAsync(1)
|
|
let proposalRoot = hash_tree_root_final(proposal)
|
|
|
|
# TODO: Should we use proposalRoot as data, or digest in regards to signature?
|
|
result = bls_sign(v.privKey, proposalRoot.data,
|
|
get_domain(fork, proposal.slot, DOMAIN_PROPOSAL))
|
|
else:
|
|
# TODO:
|
|
# send RPC
|
|
discard
|
|
|
|
proc signAttestation*(v: AttachedValidator,
|
|
attestation: AttestationData): Future[ValidatorSig] {.async.} =
|
|
# TODO: implement this
|
|
if v.kind == inProcess:
|
|
await sleepAsync(1)
|
|
|
|
let attestationRoot = hash_tree_root_final(attestation)
|
|
# TODO: Avoid the allocations belows
|
|
var dataToSign = @(attestationRoot.data) & @[0'u8]
|
|
# TODO: Use `domain` here
|
|
let domain = 0'u64
|
|
result = bls_sign(v.privKey, dataToSign, domain)
|
|
else:
|
|
# TODO:
|
|
# send RPC
|
|
discard
|
|
|
|
proc randaoReveal*(v: AttachedValidator, commitment: Eth2Digest): Future[Eth2Digest] {.async.} =
|
|
if v.kind == inProcess:
|
|
result = v.randaoSecret.reveal(commitment)
|
|
else:
|
|
# TODO:
|
|
# send RPC
|
|
discard
|
|
|
|
# TODO move elsewhere when something else wants this utility function
|
|
func int_to_bytes32(x: uint64) : array[32, byte] =
|
|
for i in 0 ..< 8:
|
|
result[31 - i] = byte((x shr i*8) and 0xff)
|
|
|
|
func genRandaoReveal*(k: ValidatorPrivKey, state: BeaconState):
|
|
ValidatorSig =
|
|
# https://github.com/ethereum/eth2.0-specs/blob/v0.1/specs/core/0_beacon-chain.md#randao
|
|
bls_sign(k, int_to_bytes32(get_current_epoch(state)),
|
|
get_domain(state.fork, get_current_epoch(state), DOMAIN_RANDAO))
|
|
|
|
func genRandaoReveal*(v: AttachedValidator, state: BeaconState):
|
|
ValidatorSig =
|
|
genRandaoReveal(v.privKey, state)
|