2018-07-23 12:58:41 +00:00
|
|
|
# beacon_chain
|
|
|
|
|
# Copyright (c) 2018 Status Research & Development GmbH
|
|
|
|
|
# Licensed and distributed under either of
|
|
|
|
|
# * MIT license (license terms in the root directory or at http://opensource.org/licenses/MIT).
|
|
|
|
|
# * Apache v2 license (license terms in the root directory or at http://www.apache.org/licenses/LICENSE-2.0).
|
|
|
|
|
# at your option. This file may not be copied, modified, or distributed except according to those terms.
|
|
|
|
|
|
2018-11-28 19:49:03 +00:00
|
|
|
# Uncategorized helper functions from the spec
|
|
|
|
|
|
2019-09-25 17:07:08 +00:00
|
|
|
import
|
|
|
|
|
# Standard lib
|
|
|
|
|
sequtils, math, endians,
|
|
|
|
|
# Third-party
|
|
|
|
|
blscurve, # defines Domain
|
|
|
|
|
# Internal
|
|
|
|
|
./datatypes, ./digest
|
2018-07-23 12:58:41 +00:00
|
|
|
|
2019-08-26 09:09:47 +00:00
|
|
|
# https://github.com/ethereum/eth2.0-specs/blob/v0.8.3/specs/core/0_beacon-chain.md#integer_squareroot
|
2018-12-19 04:36:10 +00:00
|
|
|
func integer_squareroot*(n: SomeInteger): SomeInteger =
|
2019-07-01 07:53:42 +00:00
|
|
|
# Return the largest integer ``x`` such that ``x**2 <= n``.
|
2019-03-16 19:52:37 +00:00
|
|
|
doAssert n >= 0'u64
|
|
|
|
|
|
2018-12-03 21:41:24 +00:00
|
|
|
var
|
|
|
|
|
x = n
|
|
|
|
|
y = (x + 1) div 2
|
|
|
|
|
while y < x:
|
|
|
|
|
x = y
|
|
|
|
|
y = (x + n div x) div 2
|
|
|
|
|
x
|
|
|
|
|
|
2019-04-05 14:18:13 +00:00
|
|
|
# TODO reuse as necessary/useful for merkle proof building
|
2018-12-13 16:00:55 +00:00
|
|
|
func merkle_root*(values: openArray[Eth2Digest]): Eth2Digest =
|
2019-02-07 19:27:13 +00:00
|
|
|
## Merkleize ``values`` (where ``len(values)`` is a power of two) and return
|
|
|
|
|
## the Merkle root.
|
2019-02-22 09:56:45 +00:00
|
|
|
## https://crypto.stackexchange.com/questions/43430/what-is-the-reason-to-separate-domains-in-the-internal-hash-algorithm-of-a-merkl
|
2019-02-20 20:35:27 +00:00
|
|
|
let num_values = len(values)
|
|
|
|
|
|
|
|
|
|
# Simplifies boundary conditions
|
2019-02-22 09:56:45 +00:00
|
|
|
doAssert is_power_of_two(num_values)
|
|
|
|
|
doAssert num_values >= 2
|
|
|
|
|
doAssert num_values mod 2 == 0
|
2019-02-20 20:35:27 +00:00
|
|
|
|
|
|
|
|
# TODO reverse ``o`` order and use newSeqWith to avoid pointless zero-filling.
|
|
|
|
|
var o = repeat(ZERO_HASH, len(values))
|
|
|
|
|
var hash_buffer: array[2*32, byte]
|
|
|
|
|
|
|
|
|
|
# These ``o`` indices get filled from ``values``.
|
|
|
|
|
let highest_internally_filled_index = (num_values div 2) - 1
|
2019-03-13 23:04:43 +00:00
|
|
|
doAssert (highest_internally_filled_index + 1) * 2 >= num_values
|
2019-02-20 20:35:27 +00:00
|
|
|
|
|
|
|
|
for i in countdown(num_values-1, highest_internally_filled_index + 1):
|
|
|
|
|
hash_buffer[0..31] = values[i*2 - num_values].data
|
|
|
|
|
hash_buffer[32..63] = values[i*2+1 - num_values].data
|
|
|
|
|
o[i] = eth2hash(hash_buffer)
|
|
|
|
|
|
|
|
|
|
## These ``o`` indices get filled from other ``o`` indices.
|
2019-03-13 23:04:43 +00:00
|
|
|
doAssert highest_internally_filled_index * 2 + 1 < num_values
|
2019-02-20 20:35:27 +00:00
|
|
|
|
|
|
|
|
for i in countdown(highest_internally_filled_index, 1):
|
|
|
|
|
hash_buffer[0..31] = o[i*2].data
|
|
|
|
|
hash_buffer[32..63] = o[i*2+1].data
|
|
|
|
|
o[i] = eth2hash(hash_buffer)
|
|
|
|
|
|
|
|
|
|
o[1]
|
2018-12-19 04:36:10 +00:00
|
|
|
|
2019-08-26 09:09:47 +00:00
|
|
|
# https://github.com/ethereum/eth2.0-specs/blob/v0.8.3/specs/core/0_beacon-chain.md#compute_epoch_of_slot
|
2019-07-01 07:53:42 +00:00
|
|
|
func compute_epoch_of_slot*(slot: Slot|uint64): Epoch =
|
0.6.2 updates (#275)
* update process_justification_and_finalization to 0.6.2; mark AttesterSlashing as 0.6.2
* replace get_effective_balance(...) with state.validator_registry[idx].effective_balance; rm get_effective_balance, process_ejections, should_update_validator_registry, update_validator_registry, and update_registry_and_shuffling_data; update get_total_balance to 0.6.2; implement process_registry_updates
* rm exit_validator; implement is_slashable_attestation_data; partly update processAttesterSlashings
* mark HistoricalBatch and Eth1Data as 0.6.2; implement get_shard_delta(...); replace 0.5 finish_epoch_update with 0.6 process_final_updates
* mark increase_balance, decrease_balance, get_delayed_activation_exit_epoch, bls_aggregate_pubkeys, bls_verify_multiple, Attestation, Transfer, slot_to_epoch, Crosslink, get_current_epoch, int_to_bytes*, various constants, processEth1Data, processTransfers, and verifyStateRoot as 0.6.2; rm is_double_vote and is_surround_vote
* mark get_bitfield_bit, verify_bitfield, ProposerSlashing, DepositData, VoluntaryExit, PendingAttestation, Fork, integer_squareroot, get_epoch_start_slot, is_active_validator, generate_seed, some constants to 0.6.2; rename MIN_PENALTY_QUOTIENT to MIN_SLASHING_PENALTY_QUOTIENT
* rm get_previous_total_balance, get_current_epoch_boundary_attestations, get_previous_epoch_boundary_attestations, and get_previous_epoch_matching_head_attestations
* update BeaconState to 0.6.2; simplify legacy get_crosslink_committees_at_slot infrastructure a bit by noting that registry_change is always false; reimplment 0.5 get_crosslink_committees_at_slot in terms of 0.6 get_crosslink_committee
* mark process_deposit(...), get_block_root_at_slot(...), get_block_root(...), Deposit, BeaconBlockHeader, BeaconBlockBody, hash(...), get_active_index_root(...), various constants, get_shard_delta(...), get_epoch_start_shard(...), get_crosslink_committee(...), processRandao(...), processVoluntaryExits(...), cacheState(...) as 0.6.2
* rm removed-since-0.5 split(...), is_power_of_2(...), get_shuffling(...); rm 0.5 versions of get_active_validator_indices and get_epoch_committee_count; add a few tests for integer_squareroot
* mark bytes_to_int(...) and advanceState(...) as 0.6.2
* rm 0.5 get_attesting_indices; update get_attesting_balance to 0.6.2
* another tiny commit to poke AppVeyor to maybe not timeout at connecting to GitHub partway through CI: mark get_churn_limit(...), initiate_validator_exit(...), and Validator as 0.6.2
* mark get_attestation_slot(...), AttestationDataAndCustodyBit, and BeaconBlock as 0.6.2
2019-06-03 10:31:04 +00:00
|
|
|
# Return the epoch number of the given ``slot``.
|
2019-03-12 22:21:32 +00:00
|
|
|
(slot div SLOTS_PER_EPOCH).Epoch
|
2019-01-29 03:22:22 +00:00
|
|
|
|
2019-08-26 09:09:47 +00:00
|
|
|
# https://github.com/ethereum/eth2.0-specs/blob/v0.8.3/specs/core/0_beacon-chain.md#compute_start_slot_of_epoch
|
2019-07-01 07:53:42 +00:00
|
|
|
func compute_start_slot_of_epoch*(epoch: Epoch): Slot =
|
More 0.8.0 updates (#311)
* replace BeaconState.finalized_{epoch,root} with BeaconState.finalized_checkpoint; rename get_delayed_activation_exit_epoch(...) to compute_activation_exit_epoch(...) and mark as 0.8.0; update get_churn_limit(...)/get_validator_churn_limit(...) to 0.8.0; update process_registry_updates(...) to 0.8.0
* update process_crosslinks(...) to 0.8.0; mark compute_start_slot_of_epoch(...) and get_committee_count(...) as 0.8.0
* mark Fork, is_slashable_validator(...), and get_beacon_proposer_index(...) as 0.8.0
* rename LATEST_SLASHED_EXIT_LENGTH to EPOCHS_PER_SLASHINGS_VECTOR; update process_slashings(...) to 0.8.0; remove pointless type conversion warning in get_previous_epoch(...)
* convert remaining references to finalized_epoch to finalized_checkpoint.epoch
* update slash_validator(...) to 0.8.0; mark inital value, Gwei, and time constants as 0.8.0; mark hash(...) and processBlockHeader(...) as 0.8.0
* rename WHISTLEBLOWING_REWARD_QUOTIENT to WHISTLEBLOWER_REWARD_QUOTIENT; rename LATEST_ACTIVE_INDEX_ROOTS_LENGTH to EPOCHS_PER_HISTORICAL_VECTOR (randao will also get merged into this); remove get_active_index_root(...); mark time parameter, signature domain types, and max operations per block constants as 0.8.0; update rewards and penalties constants to 0.8.0
* update is_valid_indexed_attestation(...) to 0.8.0; mark process_slot(...) as 0.8.0
* replace BeaconState.{current,previous}_justified_{epoch,root} with BeaconState.{current,previous}_justified_checkpoint
2019-07-05 08:30:05 +00:00
|
|
|
# Return the start slot of ``epoch``.
|
2019-03-12 22:21:32 +00:00
|
|
|
(epoch * SLOTS_PER_EPOCH).Slot
|
2019-02-15 16:33:32 +00:00
|
|
|
|
2019-08-26 09:09:47 +00:00
|
|
|
# https://github.com/ethereum/eth2.0-specs/blob/v0.8.3/specs/core/0_beacon-chain.md#is_active_validator
|
2019-02-20 01:33:58 +00:00
|
|
|
func is_active_validator*(validator: Validator, epoch: Epoch): bool =
|
2019-03-12 09:59:43 +00:00
|
|
|
### Check if ``validator`` is active
|
2019-01-29 03:22:22 +00:00
|
|
|
validator.activation_epoch <= epoch and epoch < validator.exit_epoch
|
2019-01-16 11:07:41 +00:00
|
|
|
|
2019-08-26 09:09:47 +00:00
|
|
|
# https://github.com/ethereum/eth2.0-specs/blob/v0.8.3/specs/core/0_beacon-chain.md#get_active_validator_indices
|
2019-05-09 12:27:37 +00:00
|
|
|
func get_active_validator_indices*(state: BeaconState, epoch: Epoch):
|
|
|
|
|
seq[ValidatorIndex] =
|
2019-08-26 07:57:09 +00:00
|
|
|
# Return the sequence of active validator indices at ``epoch``.
|
2019-07-01 09:13:14 +00:00
|
|
|
for idx, val in state.validators:
|
2019-05-09 12:27:37 +00:00
|
|
|
if is_active_validator(val, epoch):
|
|
|
|
|
result.add idx.ValidatorIndex
|
|
|
|
|
|
2019-08-26 09:09:47 +00:00
|
|
|
# https://github.com/ethereum/eth2.0-specs/blob/v0.8.3/specs/core/0_beacon-chain.md#get_committee_count
|
2019-07-02 14:31:48 +00:00
|
|
|
func get_committee_count*(state: BeaconState, epoch: Epoch): uint64 =
|
2019-05-09 12:27:37 +00:00
|
|
|
# Return the number of committees at ``epoch``.
|
|
|
|
|
let active_validator_indices = get_active_validator_indices(state, epoch)
|
More 0.8.0 updates (#311)
* replace BeaconState.finalized_{epoch,root} with BeaconState.finalized_checkpoint; rename get_delayed_activation_exit_epoch(...) to compute_activation_exit_epoch(...) and mark as 0.8.0; update get_churn_limit(...)/get_validator_churn_limit(...) to 0.8.0; update process_registry_updates(...) to 0.8.0
* update process_crosslinks(...) to 0.8.0; mark compute_start_slot_of_epoch(...) and get_committee_count(...) as 0.8.0
* mark Fork, is_slashable_validator(...), and get_beacon_proposer_index(...) as 0.8.0
* rename LATEST_SLASHED_EXIT_LENGTH to EPOCHS_PER_SLASHINGS_VECTOR; update process_slashings(...) to 0.8.0; remove pointless type conversion warning in get_previous_epoch(...)
* convert remaining references to finalized_epoch to finalized_checkpoint.epoch
* update slash_validator(...) to 0.8.0; mark inital value, Gwei, and time constants as 0.8.0; mark hash(...) and processBlockHeader(...) as 0.8.0
* rename WHISTLEBLOWING_REWARD_QUOTIENT to WHISTLEBLOWER_REWARD_QUOTIENT; rename LATEST_ACTIVE_INDEX_ROOTS_LENGTH to EPOCHS_PER_HISTORICAL_VECTOR (randao will also get merged into this); remove get_active_index_root(...); mark time parameter, signature domain types, and max operations per block constants as 0.8.0; update rewards and penalties constants to 0.8.0
* update is_valid_indexed_attestation(...) to 0.8.0; mark process_slot(...) as 0.8.0
* replace BeaconState.{current,previous}_justified_{epoch,root} with BeaconState.{current,previous}_justified_checkpoint
2019-07-05 08:30:05 +00:00
|
|
|
let committees_per_slot = clamp(
|
2019-05-09 12:27:37 +00:00
|
|
|
len(active_validator_indices) div SLOTS_PER_EPOCH div TARGET_COMMITTEE_SIZE,
|
More 0.8.0 updates (#311)
* replace BeaconState.finalized_{epoch,root} with BeaconState.finalized_checkpoint; rename get_delayed_activation_exit_epoch(...) to compute_activation_exit_epoch(...) and mark as 0.8.0; update get_churn_limit(...)/get_validator_churn_limit(...) to 0.8.0; update process_registry_updates(...) to 0.8.0
* update process_crosslinks(...) to 0.8.0; mark compute_start_slot_of_epoch(...) and get_committee_count(...) as 0.8.0
* mark Fork, is_slashable_validator(...), and get_beacon_proposer_index(...) as 0.8.0
* rename LATEST_SLASHED_EXIT_LENGTH to EPOCHS_PER_SLASHINGS_VECTOR; update process_slashings(...) to 0.8.0; remove pointless type conversion warning in get_previous_epoch(...)
* convert remaining references to finalized_epoch to finalized_checkpoint.epoch
* update slash_validator(...) to 0.8.0; mark inital value, Gwei, and time constants as 0.8.0; mark hash(...) and processBlockHeader(...) as 0.8.0
* rename WHISTLEBLOWING_REWARD_QUOTIENT to WHISTLEBLOWER_REWARD_QUOTIENT; rename LATEST_ACTIVE_INDEX_ROOTS_LENGTH to EPOCHS_PER_HISTORICAL_VECTOR (randao will also get merged into this); remove get_active_index_root(...); mark time parameter, signature domain types, and max operations per block constants as 0.8.0; update rewards and penalties constants to 0.8.0
* update is_valid_indexed_attestation(...) to 0.8.0; mark process_slot(...) as 0.8.0
* replace BeaconState.{current,previous}_justified_{epoch,root} with BeaconState.{current,previous}_justified_checkpoint
2019-07-05 08:30:05 +00:00
|
|
|
1, SHARD_COUNT div SLOTS_PER_EPOCH).uint64
|
2019-07-13 15:58:01 +00:00
|
|
|
result = committees_per_slot * SLOTS_PER_EPOCH
|
|
|
|
|
|
|
|
|
|
# Otherwise, get_crosslink_committee(...) cannot access some committees.
|
|
|
|
|
doAssert SHARD_COUNT >= result
|
2019-01-29 03:22:22 +00:00
|
|
|
|
2019-08-26 09:09:47 +00:00
|
|
|
# https://github.com/ethereum/eth2.0-specs/blob/v0.8.3/specs/core/0_beacon-chain.md#get_current_epoch
|
2019-02-20 01:33:58 +00:00
|
|
|
func get_current_epoch*(state: BeaconState): Epoch =
|
2019-07-01 07:53:42 +00:00
|
|
|
# Return the current epoch.
|
2019-03-09 04:23:14 +00:00
|
|
|
doAssert state.slot >= GENESIS_SLOT, $state.slot
|
2019-07-01 07:53:42 +00:00
|
|
|
compute_epoch_of_slot(state.slot)
|
2019-01-29 03:22:22 +00:00
|
|
|
|
2019-09-06 19:58:38 +00:00
|
|
|
# https://github.com/ethereum/eth2.0-specs/blob/v0.8.3/specs/core/0_beacon-chain.md#get_randao_mix
|
2019-01-29 03:22:22 +00:00
|
|
|
func get_randao_mix*(state: BeaconState,
|
2019-02-20 01:33:58 +00:00
|
|
|
epoch: Epoch): Eth2Digest =
|
2019-01-29 03:22:22 +00:00
|
|
|
## Returns the randao mix at a recent ``epoch``.
|
2019-09-04 13:57:18 +00:00
|
|
|
state.randao_mixes[epoch mod EPOCHS_PER_HISTORICAL_VECTOR]
|
2019-01-29 03:22:22 +00:00
|
|
|
|
2019-03-18 15:42:42 +00:00
|
|
|
func bytes_to_int*(data: openarray[byte]): uint64 =
|
2019-03-13 23:04:43 +00:00
|
|
|
doAssert data.len == 8
|
2019-02-13 10:26:32 +00:00
|
|
|
|
|
|
|
|
# Little-endian data representation
|
|
|
|
|
result = 0
|
|
|
|
|
for i in countdown(7, 0):
|
|
|
|
|
result = result * 256 + data[i]
|
|
|
|
|
|
2019-03-18 15:42:42 +00:00
|
|
|
# Have 1, 4, 8, and 32-byte versions. 1+ more and maybe worth metaprogramming.
|
2019-03-13 21:23:01 +00:00
|
|
|
func int_to_bytes32*(x: uint64): array[32, byte] =
|
2019-03-13 01:46:44 +00:00
|
|
|
## Little-endian data representation
|
|
|
|
|
## TODO remove uint64 when those callers fade away
|
2019-09-04 13:57:18 +00:00
|
|
|
littleEndian64(result[0].addr, x.unsafeAddr)
|
2019-03-13 21:23:01 +00:00
|
|
|
|
|
|
|
|
func int_to_bytes32*(x: Epoch): array[32, byte] {.borrow.}
|
2019-02-13 10:26:32 +00:00
|
|
|
|
2019-03-18 15:42:42 +00:00
|
|
|
func int_to_bytes8*(x: uint64): array[8, byte] =
|
2019-09-04 13:57:18 +00:00
|
|
|
littleEndian64(result[0].addr, x.unsafeAddr)
|
2019-03-18 15:42:42 +00:00
|
|
|
|
2019-02-13 10:26:32 +00:00
|
|
|
func int_to_bytes1*(x: int): array[1, byte] =
|
2019-03-13 23:04:43 +00:00
|
|
|
doAssert x >= 0
|
|
|
|
|
doAssert x < 256
|
2019-02-13 10:26:32 +00:00
|
|
|
|
|
|
|
|
result[0] = x.byte
|
|
|
|
|
|
|
|
|
|
func int_to_bytes4*(x: uint64): array[4, byte] =
|
2019-03-13 23:04:43 +00:00
|
|
|
doAssert x >= 0'u64
|
|
|
|
|
doAssert x < 2'u64^32
|
2019-02-13 10:26:32 +00:00
|
|
|
|
|
|
|
|
# Little-endian data representation
|
|
|
|
|
result[0] = ((x shr 0) and 0xff).byte
|
|
|
|
|
result[1] = ((x shr 8) and 0xff).byte
|
|
|
|
|
result[2] = ((x shr 16) and 0xff).byte
|
|
|
|
|
result[3] = ((x shr 24) and 0xff).byte
|
|
|
|
|
|
2019-08-26 09:09:47 +00:00
|
|
|
# https://github.com/ethereum/eth2.0-specs/blob/v0.8.3/specs/core/0_beacon-chain.md#compute_domain
|
2019-09-01 15:02:49 +00:00
|
|
|
func compute_domain*(
|
|
|
|
|
domain_type: DomainType,
|
2019-09-25 17:07:08 +00:00
|
|
|
fork_version: array[4, byte] = [0'u8, 0, 0, 0]): Domain =
|
|
|
|
|
result[0..3] = int_to_bytes4(domain_type.uint64)
|
|
|
|
|
result[4..7] = fork_version
|
2019-06-14 16:21:04 +00:00
|
|
|
|
2019-08-26 09:09:47 +00:00
|
|
|
# https://github.com/ethereum/eth2.0-specs/blob/v0.8.3/specs/core/0_beacon-chain.md#get_domain
|
2019-03-18 15:42:42 +00:00
|
|
|
func get_domain*(
|
2019-07-01 07:53:42 +00:00
|
|
|
state: BeaconState, domain_type: DomainType, message_epoch: Epoch): Domain =
|
2019-04-29 16:48:30 +00:00
|
|
|
## Return the signature domain (fork version concatenated with domain type)
|
|
|
|
|
## of a message.
|
|
|
|
|
let
|
|
|
|
|
epoch = message_epoch
|
|
|
|
|
fork_version = if epoch < state.fork.epoch:
|
|
|
|
|
state.fork.previous_version
|
|
|
|
|
else:
|
|
|
|
|
state.fork.current_version
|
2019-07-01 07:53:42 +00:00
|
|
|
compute_domain(domain_type, fork_version)
|
2019-03-18 15:42:42 +00:00
|
|
|
|
2019-07-01 07:53:42 +00:00
|
|
|
func get_domain*(state: BeaconState, domain_type: DomainType): Domain =
|
2019-04-29 16:48:30 +00:00
|
|
|
get_domain(state, domain_type, get_current_epoch(state))
|
|
|
|
|
|
2019-08-26 09:09:47 +00:00
|
|
|
# https://github.com/ethereum/eth2.0-specs/blob/v0.8.3/specs/core/0_beacon-chain.md#get_seed
|
2019-07-02 14:31:48 +00:00
|
|
|
func get_seed*(state: BeaconState, epoch: Epoch): Eth2Digest =
|
2019-01-29 03:22:22 +00:00
|
|
|
# Generate a seed for the given ``epoch``.
|
|
|
|
|
|
2019-02-13 10:26:32 +00:00
|
|
|
var seed_input : array[32*3, byte]
|
2019-04-05 14:18:13 +00:00
|
|
|
|
0.6.2 updates (#275)
* update process_justification_and_finalization to 0.6.2; mark AttesterSlashing as 0.6.2
* replace get_effective_balance(...) with state.validator_registry[idx].effective_balance; rm get_effective_balance, process_ejections, should_update_validator_registry, update_validator_registry, and update_registry_and_shuffling_data; update get_total_balance to 0.6.2; implement process_registry_updates
* rm exit_validator; implement is_slashable_attestation_data; partly update processAttesterSlashings
* mark HistoricalBatch and Eth1Data as 0.6.2; implement get_shard_delta(...); replace 0.5 finish_epoch_update with 0.6 process_final_updates
* mark increase_balance, decrease_balance, get_delayed_activation_exit_epoch, bls_aggregate_pubkeys, bls_verify_multiple, Attestation, Transfer, slot_to_epoch, Crosslink, get_current_epoch, int_to_bytes*, various constants, processEth1Data, processTransfers, and verifyStateRoot as 0.6.2; rm is_double_vote and is_surround_vote
* mark get_bitfield_bit, verify_bitfield, ProposerSlashing, DepositData, VoluntaryExit, PendingAttestation, Fork, integer_squareroot, get_epoch_start_slot, is_active_validator, generate_seed, some constants to 0.6.2; rename MIN_PENALTY_QUOTIENT to MIN_SLASHING_PENALTY_QUOTIENT
* rm get_previous_total_balance, get_current_epoch_boundary_attestations, get_previous_epoch_boundary_attestations, and get_previous_epoch_matching_head_attestations
* update BeaconState to 0.6.2; simplify legacy get_crosslink_committees_at_slot infrastructure a bit by noting that registry_change is always false; reimplment 0.5 get_crosslink_committees_at_slot in terms of 0.6 get_crosslink_committee
* mark process_deposit(...), get_block_root_at_slot(...), get_block_root(...), Deposit, BeaconBlockHeader, BeaconBlockBody, hash(...), get_active_index_root(...), various constants, get_shard_delta(...), get_epoch_start_shard(...), get_crosslink_committee(...), processRandao(...), processVoluntaryExits(...), cacheState(...) as 0.6.2
* rm removed-since-0.5 split(...), is_power_of_2(...), get_shuffling(...); rm 0.5 versions of get_active_validator_indices and get_epoch_committee_count; add a few tests for integer_squareroot
* mark bytes_to_int(...) and advanceState(...) as 0.6.2
* rm 0.5 get_attesting_indices; update get_attesting_balance to 0.6.2
* another tiny commit to poke AppVeyor to maybe not timeout at connecting to GitHub partway through CI: mark get_churn_limit(...), initiate_validator_exit(...), and Validator as 0.6.2
* mark get_attestation_slot(...), AttestationDataAndCustodyBit, and BeaconBlock as 0.6.2
2019-06-03 10:31:04 +00:00
|
|
|
# Detect potential underflow
|
2019-09-04 13:57:18 +00:00
|
|
|
doAssert EPOCHS_PER_HISTORICAL_VECTOR >= MIN_SEED_LOOKAHEAD
|
0.6.2 updates (#275)
* update process_justification_and_finalization to 0.6.2; mark AttesterSlashing as 0.6.2
* replace get_effective_balance(...) with state.validator_registry[idx].effective_balance; rm get_effective_balance, process_ejections, should_update_validator_registry, update_validator_registry, and update_registry_and_shuffling_data; update get_total_balance to 0.6.2; implement process_registry_updates
* rm exit_validator; implement is_slashable_attestation_data; partly update processAttesterSlashings
* mark HistoricalBatch and Eth1Data as 0.6.2; implement get_shard_delta(...); replace 0.5 finish_epoch_update with 0.6 process_final_updates
* mark increase_balance, decrease_balance, get_delayed_activation_exit_epoch, bls_aggregate_pubkeys, bls_verify_multiple, Attestation, Transfer, slot_to_epoch, Crosslink, get_current_epoch, int_to_bytes*, various constants, processEth1Data, processTransfers, and verifyStateRoot as 0.6.2; rm is_double_vote and is_surround_vote
* mark get_bitfield_bit, verify_bitfield, ProposerSlashing, DepositData, VoluntaryExit, PendingAttestation, Fork, integer_squareroot, get_epoch_start_slot, is_active_validator, generate_seed, some constants to 0.6.2; rename MIN_PENALTY_QUOTIENT to MIN_SLASHING_PENALTY_QUOTIENT
* rm get_previous_total_balance, get_current_epoch_boundary_attestations, get_previous_epoch_boundary_attestations, and get_previous_epoch_matching_head_attestations
* update BeaconState to 0.6.2; simplify legacy get_crosslink_committees_at_slot infrastructure a bit by noting that registry_change is always false; reimplment 0.5 get_crosslink_committees_at_slot in terms of 0.6 get_crosslink_committee
* mark process_deposit(...), get_block_root_at_slot(...), get_block_root(...), Deposit, BeaconBlockHeader, BeaconBlockBody, hash(...), get_active_index_root(...), various constants, get_shard_delta(...), get_epoch_start_shard(...), get_crosslink_committee(...), processRandao(...), processVoluntaryExits(...), cacheState(...) as 0.6.2
* rm removed-since-0.5 split(...), is_power_of_2(...), get_shuffling(...); rm 0.5 versions of get_active_validator_indices and get_epoch_committee_count; add a few tests for integer_squareroot
* mark bytes_to_int(...) and advanceState(...) as 0.6.2
* rm 0.5 get_attesting_indices; update get_attesting_balance to 0.6.2
* another tiny commit to poke AppVeyor to maybe not timeout at connecting to GitHub partway through CI: mark get_churn_limit(...), initiate_validator_exit(...), and Validator as 0.6.2
* mark get_attestation_slot(...), AttestationDataAndCustodyBit, and BeaconBlock as 0.6.2
2019-06-03 10:31:04 +00:00
|
|
|
|
2019-05-23 11:13:02 +00:00
|
|
|
seed_input[0..31] =
|
|
|
|
|
get_randao_mix(state,
|
2019-09-04 13:57:18 +00:00
|
|
|
epoch + EPOCHS_PER_HISTORICAL_VECTOR - MIN_SEED_LOOKAHEAD - 1).data
|
More 0.8.0 updates (#311)
* replace BeaconState.finalized_{epoch,root} with BeaconState.finalized_checkpoint; rename get_delayed_activation_exit_epoch(...) to compute_activation_exit_epoch(...) and mark as 0.8.0; update get_churn_limit(...)/get_validator_churn_limit(...) to 0.8.0; update process_registry_updates(...) to 0.8.0
* update process_crosslinks(...) to 0.8.0; mark compute_start_slot_of_epoch(...) and get_committee_count(...) as 0.8.0
* mark Fork, is_slashable_validator(...), and get_beacon_proposer_index(...) as 0.8.0
* rename LATEST_SLASHED_EXIT_LENGTH to EPOCHS_PER_SLASHINGS_VECTOR; update process_slashings(...) to 0.8.0; remove pointless type conversion warning in get_previous_epoch(...)
* convert remaining references to finalized_epoch to finalized_checkpoint.epoch
* update slash_validator(...) to 0.8.0; mark inital value, Gwei, and time constants as 0.8.0; mark hash(...) and processBlockHeader(...) as 0.8.0
* rename WHISTLEBLOWING_REWARD_QUOTIENT to WHISTLEBLOWER_REWARD_QUOTIENT; rename LATEST_ACTIVE_INDEX_ROOTS_LENGTH to EPOCHS_PER_HISTORICAL_VECTOR (randao will also get merged into this); remove get_active_index_root(...); mark time parameter, signature domain types, and max operations per block constants as 0.8.0; update rewards and penalties constants to 0.8.0
* update is_valid_indexed_attestation(...) to 0.8.0; mark process_slot(...) as 0.8.0
* replace BeaconState.{current,previous}_justified_{epoch,root} with BeaconState.{current,previous}_justified_checkpoint
2019-07-05 08:30:05 +00:00
|
|
|
seed_input[32..63] =
|
|
|
|
|
state.active_index_roots[epoch mod EPOCHS_PER_HISTORICAL_VECTOR].data
|
2019-02-13 10:26:32 +00:00
|
|
|
seed_input[64..95] = int_to_bytes32(epoch)
|
2019-01-29 03:22:22 +00:00
|
|
|
eth2hash(seed_input)
|
